Copyright © 2023 Tohatsu Corporation. All rights reserved. No part of this manual
may be reproduced or transmitted in any from or by any means without the express
written permission of Tohatsu Corporation.

APPLICATIONS OF THIS FIRE PUMPUSAGE
TOHATSU fire pumps “VC52AS, VC72AS” are manufactured for use in firefighting
operations.
These portable fire pumps are intended only for firefighting activities in collaboration
with general public fire extinguishing equipment.
Using it for other applications is regarded as being used for improper purposes.
The manufacturer of these fire pumps bears no responsibility for any damages that may
result from modification of the fire pump without prior permission from the
manufacture, improper use of the fire pump, or use of the fire pump for applications
other than those stated above.
Note that the use of these fire pumps for applications other than those stated above
can result in personal injury or damage to the equipment.
Using the fire pump within the range of intended uses implies that the user should
follow the instructions provided by the manufacturer relevant to operation, servicing
and maintenance.

Intended people
All persons who operate, service or maintain the fire pump must read and understandthe following items:

・Owner’s manual
・Safety-related instructions on the pump and the other parts such as the battery.
・The other owner’s manuals, such as battery charger.
The portable f ire pump should be operated by only persons who received training
as operators of fire engines along with each country’s (region’s) regulations.
The range of personal responsibility and supervision must be strictly defined by theuser.
If a person does not have adequate professional knowledge required for his/her
assignment, he/she must undergo relevant training or receive appropriate instructions
from an individual who is actually knowledgeable in operation of the fire pump.
A person who does not have enough knowledge is not permitted to operate the firepump.
When using the fire pump, conditions under which an explosion may occur are notconsidered.
CAUTION

Keep this manual in a safe place for future reference.
Operators of this fire pump must always refer to all the relevant
manuals in order to avoid errors, personal injuries, andequipment damage when operating the portable fire pump,and to maintain faultless operation.
Arrange owner’s manual so that operators can refer to themwhere they operate the fire pump.

INTRODUCTION
Thank you for purchasing the TOHATSU Fire Pump.
This fire pump has passed a range of quality assurance standards.
Owner’s manual
The portable fire pump complies with relevant laws and regulations.
The manual includes a description for operation and maintenance. Before using thisfire pump, be sure to read and understand the manual thoroughly.
Engine operation
This manual also includes a description for operation and maintenance of the engine.
NOTE

・The manual is an important item that goes with your portable firepump.

・This manual should accompany this fire pump if sold to anotherperson.

Before using this fire pump, write down the serial number in the following boxes. It will
be useful in the case of asking about servicing, repairs and genuine parts.

Serial Number
The pump serial number (identification number) is marked on the pump casing.

VC52AS
VC72AS

GENERAL SAFETY INFORMATION
Overview
Before operating the TOHATSU fire pump thoroughly
read this manual to understand the proper
operatingprocedures
including“DANGER”,“WARNING”, “CAUTION” and “NOTE”.
These notices are designed to bring attention tovery important information necessary to ensure
safe, trouble free operation.
Warning sign
Meaning
This sign is used for safety-related instructions inthis manual.
Be sure to follow all safety-related instructions,otherwise, personal injury may occur.

Signal words
DANGER･Failure to observe will result in severe personal injury or
death.

WARNING･ Failure to observe could result in severe personal injury or

CAUTION･ Failure to observe could result in personal injury or property

death.

damage.

・This instruction provides special information to facilitate the use or maintenance ofthe pump or to clarify important points.

・For attaching position of the warning label, refer to the “CONTENT 3. LABELS”.
・Warning labels should be read clearly at any time.
If the display of the warning label becomes difficult to be read, it was almost
come off, you must replace paste immediately.
Safety-related instructions and warning signs
Read and follow the safety-related instructions described in this manual and all
warning signs on the portable fire pump thoroughly.
Always keep the warning signs in a legible condition. If any warning sign becomes
illegible or detached, replace it immediately.

Transporting the portable fire pump
CAUTION・ Retractable handle is folding
type.

・ Do

not put hand or finger
between top of retractable handle
and bracket.

・ When transporting the portablefire pump, assign one person per
handle.
・ Also, when you transport theportable fire pump, it should betransported holding the handle
firmly.
・ There is a risk of injury to the leg byfall.
Durability of protection
When you purchase a new pump, it is placed inpacking box and protected.
Storage of pump after transportation
Keep the pump away from high humidity, and place
it on a horizontal plane.
Disposal of packing box
Dispose the packing
environmental laws.

box

by

following

the

Noise
CAUTION ・Wear proper hearing protection
during operation.
Exhaust gas
Fatal hazard from carbon monoxide (CO) poisoning
Exhaust gas emitted from the engine contains carbon monoxide (CO)etc. that may seriously affect human health.
Do not operate the engine in a room, car, warehouse, tunnel or otherclosed locations that have poor ventilation.

Safety devices
Before operating the portable fire pump, be sure to check that all
the safety devices have been installed in the appropriate positions.
Before removing the safety devices, turn the main switch off.

After protective devices (such as the muffler guard)
have been disassembled as part of servicing andmaintenance work, immediately install them back totheir original locations, making sure that they are insafe and secure condition.

Check the portable fire pumpfunctionally on a regular basis.

visuallyandIf you find any faulty device or equipment, remove
it immediately, and repair or replace it, if necessary.
Failure to do so may cause an accident.
After it has been repaired or replaced, make surethat it functions correctly.
Protective clothing, Protective equipment
During fire extinguishing training or regular
firefighting services, wear normal protective
clothing and equipment to protect your body.

・Fireproof protective clothing
・Fireproof helmet
・Fireproof protective gloves
・Fireproof protective boots

Service, Maintenance
Servicing and maintenance of this fire pump must be carried out by
o n l y t h e persons who have professional knowledge, who arefamiliar with the device, and who understand laws and regulations
regarding safety and accident prevention.
Before starting maintenance work, turn the main switch off to stopthe engine.
Disconnect the negative terminal of the battery.
Before starting maintenance work, securely place the portable firepump on the ground.
In the case of just after stopping the engine, do not touch the exhaustpipe, the muffler and the other engine parts until these parts will becold enough. These parts could be very hot and will cause severe burns.
Electrical equipment
Only expert electricians or trained staff members
should handle electrical equipment.
When disconnecting the cable from the battery,disconnect the negative (-) cable first.
When connecting the cable to the battery, be sure
to connect the positive (+) cable first. After that,connect the negative (-) cable.
Do not place any metal on the top of or around thebattery. Doing so may cause a short circuit.
Use a fuse with the same specifications as the original
one when replacing it. Using a fuse that has agreater capacity than the rated value may damage
the equipment.
Check the electrical equipment of the fire pump ona regular basis.

Battery
Follow any safety-related instructions shown on thebattery.
The battery can generate flammable hydrogen gas
that may cause an explosion.
Do not charge the battery in closed location.
Do not smoke around the battery.
The battery electrolyte is caustic and may cause
personal injuries.

・ Always wear protective clothing.
・ Always wear protective gloves.
・ Always wear protective glasses.
・ Do not tilt the battery. Doing so may cause thebattery electrolyte to leak out from the vent hole.
Handling of fuelExercise care when handling fuel. Failure to do so
may cause fire.
Do not bring any flames near fuel. Stop the engine
before refueling. Do not smoke while refueling fuel.
Do not refill fuel in an enclosed room. Doing so may
cause an explosion caused by fuel fumes.
If fuel spills, wipe it with a cloth or other material,and dispose of it according to relevant laws andregulations.
Disposal
Dispose of disused batteries according to relevantlaws and regulations.

Genuine parts
When replacing parts for servicing and maintenanceof portable fire pumps, be sure to use only Tohatsu
genuine parts.
If genuine Tohatsu parts and accessories are notused, it may adversely affect the functioning andsafety of the fire pump. Use genuine Tohatsu parts
only.
Tohatsu bears no responsibility for any personal
injuries or equipment damage that may result fromuse of parts or accessories obtained from outside
sources.
Environmental protection measures
Dispose of oil, fuel, batteries, etc. according torelevant environmental laws.
Do not dump waste into the ground, water, or
sewerage.
Store the fuel only in the specified container.
When disposing of parts, follow the correct disposal
procedure.

Water-prohibiting substanceDo not discharge
substance.

water

to

water-prohibited

Use of water
Do not pump combustible liquids, chemical or
caustic liquids.

CONTENTS
1.

SPECIFICATIONS……..……..….…...…..……….….……….…………..………1

2.

OPERATION DEVICE……….….…..………………….…...…..…….…………5

3.

LABELS……..….….……….………...…………...………...….…………….….……7

4.

OPERATING PRECAUTIONS…………....…........………...……....…..…8

5.

DESCRIPTION OF DEVICES……..…....……....….….….…..……….…..10

6.

PREPARATION FOR OPERATION……………….…...………….…..…21

7.

USE OF OPERATION PANEL…………..………...…..……………………26

8.

STARTING THE ENGINE…..……….…...…….…….….…….....……....…29

9.

PRIME AND DISCHARGE.……..……….….…………….……..….……..34

10. STOPPING THE ENGINE...……….………….…....…...…..…..….….…...41
11. MAINTENANCE AFTER OPERATION……..……..…..…..……..…...42
12. MAINTENANCE IN COLD CONDITION……...…...….………..….…49
13. USE OF ACCESSORY.……..….…..……………..….….…..….….….….…54
14. PERIODICAL INSPECTION…...……..…………..……........….….……..55
15. SERVICE AND MAINTENANCE….....................…......……...….…..58
16. TROUBLESHOOTING….………..….…..….….......……….….…......……69
17. APPENDIX….…..………..…………..…...…...…..……….……….….……...….83
18. TOOL AND STANDARD ACCESSORY……..…………….………..….84

1. SPECIFICATIONS
ModelDescription

VC52AS

VC72AS

Portable pumpEngineManufacturer

TOHATSU CORPORATION

Model

2WT76AMType

2-stroke, water-cooled spark ignition engine

Bore ×Stroke

76 mm × 68 mm (2.99 in × 2.68 in)

Number of Cylinder

2

Piston displacement

617 cm3

Rated power

30kW (40.8PS)

Fuel type

Unleaded petrol RON91

Fuel tank capacity

18 L (4.76gal(US))

Fuel consumption

9 L/h (2.38gal(US)/h)Engine oil tank capacity

1.6 L (0.42gal(US))

Ignition

C.D.I.

Spark plug

NGK BPR7HS-10

Starting system

Electric starter and Manual starter

Lubrication

Auto mixing

Fuel system

Carburetor

Battery

12V-16 Ah/5 HR, 12V-18 Ah/10 HR

Floodlight bulb

12V-35W

1

13 L/h (3.43gal(US)/h)1. SPECIFICATIONSModel

VC52AS

VC72AS

PrimerType

Rotary-vane vacuum pump (Oil less type)Max. suction height

Approx. 9 m (29.5 ft)

Pump
Type

Single suction, single stage, centrifugal pump

Number of delivery outlet

1
NST thread NH 2-1/2” (male)
JIS fire thread (B-9912) 2-1/2” (male)
NST thread NH 4” (male)
JIS fire thread (B-9912) 3” (male), 3-1/2” (male)

Discharge port coupling
Suction port coupling
Pump performance(Suction height: 3 m / 9.8 ft)

1.45 m3/min at 0.5 MPa
380 gal(US)/min at 75 psi
1.15 m3/min at 0.7 MPa
300 gal(US)/min at 100 psi

1.43 m3/min at 0.7 MPa
375 gal(US)/min at 100 psi
1.02 m3/min at 1.0 MPa
265 gal(US)/min at 150 psi

Dimensions and weight
Length×Width×Height

700 × 620 × 730 mm (27.6 × 24.4 × 28.7 in)

Mass (Dry)

85 kg (187 lbs)

Materials
EngineCrankcase, Cylinder, Cylinder head

Aluminum alloy

Crankshaft

Chromium-molybdenum steel

Connecting rod

Chromium-molybdenum steel

PistonAluminum alloy

Pump shaft

Chromium-molybdenum steel

Muffler

Steel

Pump
Pump casing,
Pump cover

Aluminum alloy

Impeller

Aluminum alloy

Shaft sealType

Mechanical seal

2

Pressure

psi

3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

MPa

0.6
m3/mingal(US)/mingal(US)/min

60

80

100

120

140

0.7
200

0.8

0.9
250

1.0

300

Discharge

1.1

1.2

350

1.3

1.4

Suction hose dia.
:3’’
Suction hose length :6m
Suction hose height :3m

400

1.5

1. SPECIFICATIONS

Performance Curve
VC52AS

Pressure

psi

4

0.5

0.6

0.7

0.8

0.9

gal(US)/min

m3/min

80

100

120

140

MPa

1.0

0.8

0.9
250

1.0

1.1
300

1.2

Discharge

350

1.3

1.4

400

1.5

1.6

Suction hose dia.
:3’’
Suction hose length :6m
Suction hose height :3m

450

1.7

1. SPECIFICATIONS

Performance Curve
VC72AS2. OPERATION DEVICE

Discharge valve(Ball cock type)
Discharge valve handle
Fuel tank cap
Discharge valve
Discharge port

Engine oil tank cap

Suction port

Engine oil tank
Front cowl

Suction hose coupling (cap)Pump casing drain cockPriming leverBattery

Knob (wing screw)

Primer strainer

Spark plug (#1) Spark plug (#2)

Fuel cock

Real
cowl

Carrying
Handles(4)Manual starter Fuel drain pot
handleMuffler5

Priming outlet Exhaust pipe

2. OPERATION DEVICE
Control panel

Pressure gauge for discharge

Pressure gauge for suction

Monitor lamps

Overheat switch

Hour meter
Main switch

Operation panel

Floodlight projection and battery
charging connector

Throttle dial

Operation panel warning lamps
FuelEngine oil

Overheat63. LABELWARNING & CAUTION(Pulley for Vacuum pump)
On the fuel tank ~ Inside of the cowl

7

4. OPERATING PRECAUTIONS
Installing pump
CAUTION

The fire pump must be installed on a level ground. Otherwise, anaccident may occur.
If the fire pump should be installed on uneven ground, it must be
secured.

NOTE

Place the pump as near as possible to water source, and water suction
height as low as possible.
When putting the portable fire pump down to the ground, put it gently
and horizontally.
In case of the inclined location or uneven ground, make sure thatwater suction hose is located lower than suction port of the pump.
In case of the suction hose is put undulated, air can be left easily inthe hose, and possibly cause suction inability when the water
discharge valve is opened.
In case of the suction inability due to air remaining in the suction hose,
set the water discharge valve half-opened, and operate vacuum pump
until water is discharged continuously. (for 3 to 5 seconds frombeginning of water discharge).
Be sure to install strainer and basket on the end of suction hose. If thepump may suck sand or mud of the bottom of water source, place
sheet below the basket.
Strainer and basket of suction hose should be placed more than 300
mm (11.8 in) below water surface to prevent suck of air.
Discharge hose should be arranged not to be bent.

84. OPERATING PRECAUTIONSCAUTION

When installing the portable pump in the vehicle, place the vehicle
on a level place, and install the pump.
When installing the portable pump in the vehicle, make sure to
apply the brakes of the vehicle in order to stop the wheels. A
serious accident may occur if the vehicle moves.
Do not put your hands or fingers in
the retractable part when operating
the handle.
When transporting the portable fire
pump, assign one person per handle.
Also, when you transport theportable fire pump, it should betransported holding the handle
firmly.

Do not put yourhands or fingers

NOTE

When lowering the portable fire pumpto the ground, lower it gently andhorizontally.

CAUTION

Do not touch the exhaust pipe and the muffler
while the engine is running, or for more than 10
minutes after the engine has
been stopped.
These parts are very hot and will cause severeburns.

9

5. DESCRIPTION OF DEVICES
Carrying handle
The fire pump is equipped with four carrying handles.
The handles can be folded manually, and opened byrotating them by 90 degrees.

Carrying handle

Carrying handle

CAUTION

Personal injuries may occur when
opening or closing the handle.
Do not put your hands or fingers into
the retractable part when operating
the handle.
To prevent injuries, two persons
should work together when carrying
and placing the pump.

Opening the cowl
Front cowl

Open

When you remove the front cowl, turn the 2 wing screws
at the front cowl and release the lock on each screw.
Release the 2 hooks up at the back side of the pump.
Lift the front cowl toward upper side.
NOTE

Wing screw

When removing the cowl, do not use
excessive force with care to avoid
damaging the hook, cowl or other parts.
Hook

10

Close

5. DESCRIPTION OF DEVICES
Rear cowl
・ When you remove the rear cowl, detach the two plug
caps from the spark plugs.
・ Pull open the cowl at around the support pin.
・ Remove the plug caps through the holes in the cowl.
・ Lift the rear cowl toward upper side.
NOTE

Rear cowl
Plug cap・ Remove the front cowl first, and thereal cowl second.

Assembling the cowl
Assembling order is in reverse order of the opening.
The hooks (at 2 locations on the cowl) must be aligned tosockets of the grommet before insert firmly.
NOTE

Pin
Hook

・ Assemble the rear cowl first, and thefront cowl second.

Suction port

Suction port

The diameter of the thread for the fire pump is
NST thread NH 4” (male)
JIS fire thread (B-9912) 3” (male), 3-1/2” (male)・ When the pump is running, do not
put your finger into the suction port,
you may be seriously injured by therotating inducer.
CAUTION ・ If the pump runs without a strainer,
gravel may enter the pump, resulting
in significantly reduced water
discharge capacity.

115. DESCRIPTION OF DEVICES
Discharge port
The diameter of the thread for the fire pump is
NST thread NH 2-1/2” (male)
JIS fire thread (B-9912) 2-1/2” (male)ThreadScrew down discharge
Valve (Single outlet)

Ball valve discharge
Valve (Single outlet)

Discharge valve
Use the discharge valve handle for opening and closing the discharge valve.

Discharge valve handle
Screw down discharge
valve (Single outlet)

12

Ball valve discharge
valve (Single outlet)

5. DESCRIPTION OF DEVICES
Drain valve
Use the drain valves to drain water.
Drain valves;- at the pump case

- at the muffler- at the ball cock discharge valves (Only for ball cockdischarge valve type)

NOTE

・ Close all the valves when operating thefire pump. If the valve is opened, watercannot be suctioned.

MufflerDrain valve
Ball cock
Discharge valve

Priming lever
Use for suctioning water.
After starting the engine, pull down the priming lever tosuction water.
After priming has been completed, return the priming
lever to its original position.

Fuel tank
Refill appropriate amount of gasoline to the fuel tank.
Close the fuel tank cap all the time except refuel.

13

Priming lever

Fuel tank cap

5. DESCRIPTION OF DEVICES
Engine oil tank

Oil tank cap

Refill appropriate amount of oil to the oil tank.
Close the Oil tank cap all the time except filling.
The oil tank has an oil level sensor.
The warning buzzer sounds, if the engine oil is not enoughfilled.
CAUTION ・ If you run the pump despite of thewarning buzzer sounds, the engine
could have damages and/or be stuck.
NOTE

Oil tank

・ Fill the 2-stroke engine oil until the oil

Fuel valve

level warning buzzer does not sound.

Fuel valve
Full open or close completely.

Control panel
The control panel is equipped with all the necessary
operating and control instruments as follows.

Control panel
Operation panel
The operation panel is equipped with・ Main switch
・ Warning lamp : Fuel, Oil, Over heat・ Hour meter・ Over-heat switch

Operation panel

145. DESCRIPTION OF DEVICES
Main switch (Stop switch)
Turn the Main switch to run or to stop the pump.

Main switch

Description Function
OFF

To stop the pump

ON

Running position

START

To start the pump running

Warning lamp and Warning buzzer
Turning the start switch “ON” position, if there is no problem in the engine to start, thewarning lamps and buzzer are off. If there some problems in the pump, the monitor
lamps light on when you turn the start switch on. The warning lamps and the buzzer
indicate the following information:
Fuel

Warning lamp: Fuel, Engine oil, Overheat
Engine oil

Warning buzzer alarms: Engine oil
CAUTION ・ If they do not, remove the cause
by following the content ”16
troubleshooting” section.

Overheat-Low fuel level warning
If the fuel level goes down below approximately 1/3 of the fuel tank, monitor lamp lights
up.
-Low engine oil warning
If the engine oil level goes down below approximately 1/3 of the engine oil tank, warning
lamp lights up and the warning buzzer sound.
CAUTION ・ Refill the engine oil immediately. Even if the warning lamp lights up
and the buzzer sound, the engine will not stop soon.
However, refill the engine oil immediately to avoid the engine
stuck risk.

15

5. DESCRIPTION OF DEVICES-Overheat warning
If the engine overheating caused by lack of cooling water, etc. then the overheat lamp
lights.
CAUTION・ The engine may be damaged. Do not restart the engine soon after
stopped running.

NOTE

・ In the case of the overheat sensor switch is on, the engine stops
automatically when an overheated is detected.

Overheat switch
The overheat sensor switch should be always on to avoid
a malfunction or destruction of the engine by overheating.
Overheat switch
CAUTION ・ Restarting without treating with the cause of overheating may
cause the engine condition worse or be damage.
In particular, with regard to trouble that occurs in the suction line,
cooling line, fuel line and engine itself, remove the cause and thenrestart the engine.
・ Make sure that the warning lamp and the buzzer have turned off.
In the case of the switch is on, the engine will stop, the lamp turns on and buzzer soundwhen the overheat sensor works.
In the case of the switch is off, the engine will not stop, the lamp turns on and buzzer
also sound when the overheat sensor works.
The engine can be started if the switch is off.
Hour meter
The hour meter indicates the accumulated operation
time of the fire pump.
NOTE

・ Use it to check the running time.
・ The meter continues counting as longas main switch is on.

16

Hour meter5. DESCRIPTION OF DEVICES
Throttle dial
Use the Throttle dial to control discharge pressure.

Throttle dial

Pressure gauge for suction
The pressure gauge for suction indicates the actual
operating pressure.

Pressure gauge for suction
Pressure gauge for discharge
The pressure gauge for discharge indicates the actual
operating pressure.
Pressure gauge for discharge
Battery charger connector
Connect the battery charger plug to the connector whencharging the battery of the pump.

Battery charger connector<Specifications of accessory connector>･ Voltage: DC12V･ Max. allowable current: 5A

CAUTION ・ Before charging a battery, turn the main switch off.
・ When starting operation, make sure to remove the battery charger
before turning the main switch on.
・ The connector is for a battery and a floodlight.
・ Do not connect a cigarette lighter to the connector, because it is nota heat-resistant object.

17

5. DESCRIPTION OF DEVICES
Fuse box
Security fuses are installed for electrical circuit in thefuse boxes.
There are two fuse boxes:-Black color fuse box is for 15A fuse.
-Yellow color fuse box is for 5A fuse.

Fuse box
Spare

Fuse
Manual starter
If the engine does not start with the starter motor, use
the manual starter.
CAUTION ・ Do not pull the manual starter handle
when the pump is running. Personal
injuries may occur and/or the
manual starter may be damaged.
Manual starter handle

NOTE

・ To start the engine with manual starter,
engage the manual starter ratchet bypulling the starter rope slowly. And
then pull the starter handle quickly withgreat force from the position in which
feeling harder resistance.

18

Cap

5. DESCRIPTION OF DEVICES
Governor case
Check the governor oil level with the governor oil level
gauge (dipstick).

Oil level gauge

Oil level gauge
The governor oil gauge shows upper and lower level on
the gauge.
If oil is needed, add 2-stroke engine oil from the oil gauge
port up to the full line mark.
Use the engine oil recommended by the engine
manufacture.
CAUTION ・ Be sure to stop the engine before
checking the oil level. If you pull thedipstick when the pump is running,
the oil may blow out.

Oil line markMechanical governor
A built-in mechanical governor controls the throttle valve so that the maximum engine
speed does not exceed the revolution shown below.
・ VC52AS ：5650 r/min
・ VC72AS ：5720 r/min

19

5. DESCRIPTION OF DEVICES
Floodlight (Search light)
Use the floodlight projector to illuminate the location where this fire pump is operated.
Connect the floodlight plug to the pump side connector.
Fix the projector to the tripod with tightening the adjust screw.

Floodlight projector

Plug
Bulb 12V-35W
Adjust screw

Connector
Tripod20

6. PREPARATION FOR OPERATION
Initial charge of battery
The battery can be used immediately after filling cells with electrolyte.
Do not open the battery after filling it with electrolyte. Because this is maintenancefree of electrode. (Sealed type battery)
Refer to the INSTRUCTIONS on the battery.
Fuel
Fill the tank with gasoline until the maximum level
checking by the gauge indicator (in red).

Indication* Gasoline: 87 octane minimum at pump posted rating…91 based on the research octane rating method.
･Fuel tank capacity: 18 L (4.75 gal)

Vaporized fuel may cause ignition or an explosion.
Do not bring any flames near fuel.
Smoking, (errant) sparks, static electricity, heatand the other sources of fire can cause explosion.
Stop the engine before refueling or draining fuelfrom carburetor.
Do not spill fuel or overfill fuel into the tank.

21

6. PREPARATION FOR OPERATIONCAUTION・ Do not breathe in vapor!
・ Petrol fumes are very toxic.
・ After stopping the engine, do not touch while itis hot.

・ Refill fuel after the engine has cooled down.
・ Fuel tank cap should be always tightly closed.

Fuel tank cap should be removed only to fill tankwith fuel.

・ Properly clean up all fuel spills (checking for
gasoline vapor) before starting engine.

・ If petrol or fuel spills, wipe it off using a cloth ormaterials, and dispose of them according to therelevant laws and regulations.

NOTE

・ Use of low-quality fuel results in a short engine life as well as starting
difficulty and other engine problems.

・ Fuel containing alcohol, methanol (methyl), or ethanol (ethyl), maycause:-Deterioration of rubber parts and plastic parts.
-Starting, idling and other engine performance problems.

・ Do not use fuel containing over 10% ethanol. Do not use fuelcontaining over 5% methanol.

・ Damages resulting from the use of fuel contain alcohol are notcovered under the limited warranty.

・ Always fill the fuel tank with gasoline to be ready.
Governor oil gauge

Governor oil
Before using fire pump, check governor oil level.
Pull out governor oil gauge (dipstick), check the oil level,
the oil level should be between upper and lower line on
the dipstick. If the oil level is under the lower line, add 2stroke engine oil from the oil gauge port up to the full line
mark.

Full line mark22

6. PREPARATION FOR OPERATION
Engine oil
Refill the 2-stroke engine oil to the oil tank.
* Fill the oil tank with the engine oil until “F” level.
CAUTION

If the engine oil is not enough filled.
The warning buzzer sounds, (switch“ON”) We recommend that you use
engine oil of ISO-L-EGB grade or
higher.

“F” level

If different grades of engine oil are
mixed, it may gelate, which could
cause oil filter clogged.
Always wipe off spilled engine oil.
NOTE

If the engine oil is not enough (less than approx. 1/3 of the oil tank), themonitor lamp for oil level lights on, and also the warning buzzer sound.

2-stroke engine oil
We recommend that you use engine oil of ISO-L-EGB grade or higher.
Oil level sensor
The lamp on the operation panel will light when the levelof engine oil goes down to approximately 1/3 of the oiltank. And also the buzzer will sound.

23

6. PREPARATION FOR OPERATION
Drain valve
Make sure all drain valves are closed.

Close
Drain valve
Close(For ball cock discharge valve)
Drain valve
Close
Open

Discharge valve
Make sure the discharge valve is closed.
In the case of ball cock discharge valve type, also closethe drain cock.

Close

Screw down discharge valve

Close
Ball cock discharge valve
Close
Closed Circulating Water Cooling System
In this system, engine cooling water is taken from the suction water, and pressurized by
the pump. The water goes through the engine and the muffler, and returns to the water
intake of the pump.

24

6. PREPARATION FOR OPERATION
Overheat protection sensor
When you turn on the overheat sensor switch, this device shuts down the engine
automatically when the engine has excessively overheated caused by lack of coolingwater. Usually turn on the overheat sensor switch.
Overheat sensor switch
Overheat warning lamp
If the temperature of the cooling water reaches
approximately 75°C or more, the engine will be stopped
automatically to prevent overheating.
Overheat warning lamp

Warning lights and sensors

Turning the main switch on, if there is no problem with these checkpoints, the lamp willremain off and the buzzer will not sound.
CAUTION

After the engine has stopped due to overheating, if you restart theengine immediately, engine may be burnt. Before restarting theengine, eliminate the cause (refer to “Chapter 16
TROUBLESHOOTING”). Also, check that the warning lamps areturned off.

NOTE

<Alert action check (Lamp check) >When the main switch is turned on, the warning lamps and buzzer will
be activated for approximately one second. After one second, thewarning lamps are all turned off in the condition of power on, it shows
there is no trouble on each function.
If the warning lamps turn on or blinking, the function in particular does
not work properly.

Battery installation
The battery mounted on the engine can be used
immediately after filling cells with electrolyte (1.28 specificgravity at 20°C=68°F). Refer to the INSTRUCTIONS on thebattery.

Battery25

7. USE OF OPERATION PANEL
If all the warning lamps are off, each function is working properly.
* Countermeasure (Warning lamps turn on)
It is necessary to take a countermeasure if the lamp turns on when turning the main
switch on. Then take a countermeasure referring to “Chapter 16 TROUBLESHOOTING”.
Warning indicators

Alert check

One
time
flash

One
time
flash

Fuel LevelON

Oil level
Overheat

One
time
flash

ON

Normal systemtest (*1)

ONON*1. Just after turning on the main switch.

26

Descriptionof faults
or notice

RemedyFuelwarninglamp

WarningEngineOilOverheat buzzer operation
warning warning
lamp
lamp

Alert

ON

Stop

Fuel level below
approx.1/3

A

Oil level below
approx.1/3

B

Engine stopC

7. USE OF OPERATION PANEL
Remedy
A: Supply fuel.
B: Supply 2 stroke engine oil.
C: Read the TROUBLE SHOOTING and remedy it.
In the case of overheat
Check the cause and remedy it.
Turn off the overheat sensor switch and start the engine. After confirming the lamp
is off, return the switch to the on position.
The system does not detect overheat caused by some reasons such as shortage ofengine oil or abnormal gas-mixture caused by malfunction of the carburetor.
Before removing the electrical equipment, turn themain switch off and remove the battery.
When removing the battery cable from the battery
terminal, always disconnect the negative (-) cable
first.
When connecting battery cable, connect thepositive (+) lead first.
If you connect the negative (-) lead first, hydrogengas generated by the battery may cause an
explosion.
Do not place any metal on the top or around thebattery. Doing so may cause a short circuit.
NOTE

If the warning lamp does not light when the lamp has
to light (i.e. the fuel level is below one third of the tank),
the bulb could be burned out. Then replace the lamp
bulb or consult with your dealer.
When carrying out a periodical inspection and preoperation checks, check the monitor lamps and alsoeach individual component.
The system does not detect such overheat as causedby shortage of engine oil or abnormal thin gas-mixture
occurred due to carburetor’s malfunction.

27

7. USE OF OPERATION PANEL
Hour meter(1) The hour meter starts counting when the main switch is turned on.
(2) The hour meter only works during the main switch is on.
(3) There is no reset capability.
(4) The hour meter covers a time 0.1 hour to 9,999 hour, and it rolls over to 0 when it
reaches maximum range.
NOTE

In case of engine stop due to overheat or fuel shortage, the meter willcontinue counting while the main switch is on.

28

8. STARTING THE ENGINE
Installation of pump
WARNING

Since the temperature around the engine become
high because of the muffler and exhaust gas, install
the pump on level ground at least three meters
away from inflammable materials including dry
grass and wood.
Exhaust gas, which contains carbon monoxide, is adeadly poisonous gas with no color and no smell.
Do not operate engine in a closed space or ininsufficient ventilation place, such as indoor, in thevehicle, warehouse, tunnel, well, in the hold of aship.
Do not start engine with discharge valve opened.
Do not pump and discharge liquids other thanwater (e.g. flammable liquids or chemicals).
This pump is only designed to pump water.
Do not discharge water to water-prohibiting
substance.
Do not insert your hand and/or finger into thesuction port to avoid serious injury by the rotating
part.

CAUTION

Do not run the pump without suction side strainer. If gravels go
into the pump, then the pump will be damaged and theperformance would be significantly reduced.

1. Place the pump near water source on a flat area.
2. Connect suction hose and delivery hose to the pump securely. Put end of suction
hose in water source. The suction hose must have a strainer and a basket at the tipof the suction hose.
3. Recommended diameter of the nozzles for the pump*.
Single outlet use: in between 21.5 ~ 36.0 mm (0.8 ~ 1.4 in)Twin outlet use: in between 15.2 ~ 25.0 mm (0.6 ~ 1.0 in)* 3 (m) of suction head.

29

8. STARTING THE ENGINE
Starting engine
CAUTION

Wear proper hearing protection during operation.

While engine is running, do not touch the highvoltage Ignition wire attached to spark plug. Thiswire carries very high voltage which will cause
injury and bodily harm.

Do not operate pump on dry grass. The exhaustsystem gets very hot and will ignite dry grass.
Cleaning out dry grass in the area if necessary.

1. Turn the fuel valve to open position, this will allow fuelto flow to the carburetor.

Close
Open

30

8. STARTING THE ENGINE
2. Turn the throttle dial to the “START･SUCTION”
position.

START・SUCTION

3. Turn the main switch to the “START” position.
Release the main switch immediately after the engine
starts.

ReleaseNOTE

1. Extended operation of the starter motor will run the battery drain.
Operate the starter motor for maximum 3 seconds.
If the engine does not start, wait for 5 seconds before operating thestarter motor again.
2. Do not operate the starter motor after engine started.
3. If the starter motor does not work, check that the battery terminals
are tightly connected and the battery is fully charged.

* If electric starter does not work to start, use the recoil starter. (Manual operation)

31

8. STARTING THE ENGINE
Starting engine by manual operation(Using a recoil starter)

If electric starter does not work, use a manual starter.
When you use the manual starter, operate the engine as shown below.

1. Turn the fuel valve to open position, this will allow fuelto flow to the carburetor.

Fuel valve

Close
2. Turn the throttle dial to the “START ・ SUCTION”
position.

Open

3. Turn on the main switch.

ON

4. Engage the manual starter ratchet by pulling thestarter rope slowly. And then pull the starter handle
quickly with great force from the position in which
feeling harder resistance.
*Holding the fire pump in place with your foot.
5. After engine starts, return the starter handle to theoriginal position slowly. Do not let the starter handle
go off, this can cause damage to the recoil of thestarter.
WARNINGCAUTION

Do not run the engine with manual
starter cover opened. Doing so will
result in serious injury.
Do not pull the manual starter handle
when the pump is running. Otherwise,
the manual starter may be damaged.

32

Main switch

8. STARTING THE ENGINE
Dry operation
This portable pump has an outside water cooling system, limit the duration of dry
operation so that it is within the following time periods.
Performing dry operation longer than the specified time period may cause damage tothe engine or pump.
Idle position: within 2 minutes
Throttle dial at “START” position: Within 30 seconds
Closed discharge valve operation after priming water
When the pump is operated with the discharge valve closed, the cooling watertemperature becomes high.
WARNING

Do not run the engine with opened recoil starter to avoid serious
injury.

CAUTION

Continuing the closed discharge valve operation after priming
water, the pump will be overheated.

33

9. PRIME AND DISCHARGEWARNING

While the engine is running, do not touch therotating parts of the pulley or belt. This can cause
personal injuries.

NOTE

If the pump cannot suck water during the operationof the vacuum pump for 30 seconds, or cannot keep
the water in the water path of the pump during thewater discharge operation, check the following:-Is the tip of the suction pump hose completely
under the water surface?
-Is air sucked through the joint of the suction hose?
-Is the suction hose damaged?
-Does the vacuum performance of the priming pump reduced
Significantly?
-Does the pump case leak vacuum?
-Does a vacuum leak occur when the pump is connected with thesuction hose which the opening side is capped?
Refer to “Chapter 16 TROUBLESHOOTING”.

1. After starting the engine, pull down the priming leverup to put tension on the V- belt leading vacuum pump
operation for suction.
2. Check that the pumped water is discharged
continuously from the priming outlet of the vacuum
pump. Make sure the pressure gauge shows positiveside.
3. Return the priming lever to the original position.

34

Original position

Priming lever
Priming outlet

9. PRIME AND DISCHARGE
NOTE

Limit the vacuum pump operating time within 30 seconds. If the pumpcannot suction water within 30 seconds, it may have another problem.
Refer to “Chapter 16 TROUBLESHOOTING” to rectify the problem.

・ When priming water from a water source that is considerably lower
location than the pump, suction may fail to bring water up to pump.

・ Do not operate the engine more than 2 minutes without pumping
water.

・ If the elevation of suction hose does not follow a downward slope fromthe pump to the water source, an air trap occurs and there could haveinsufficient discharge volume. In such case, immediately re-prime thepump.

・ When the air pocket stays trapped inside of suction hose, open the
discharge valve, and operate vacuum pump 3-5 seconds intervals until
there have smooth discharge water stream.

4. Open the discharge valve.
Ball cock discharge valve
Turn the discharge port lever towards the discharge
port adapter (hose) at slow speed.

Open

The discharge port can be turned approximately 90
degrees.
Screw down discharge valve
Turn the discharge valve handle to the left
(counterclockwise).

35

Open

9. PRIME AND DISCHARGECAUTION・ Before opening water discharge port

or valve of the pump, make sure to
warn the person holding the nozzle or
the branch pipe to check the nozzle isopened and ready to discharge water.

・ During operation, check the suction and discharge hoses. They
must be free of kinks, pinches, etc., possibly caused fromemergency vehicles rolling over hose.

NOTE・ To avoid the air left in the hose, the pump should be located above

the suction hose. If some air left in the hose, the pump may not beable to discharge the water by the accumulated air in the hose when
you open the discharge valve. In this case, open the discharge valve
and operate the vacuum pump for 3 to 5 seconds until the water is
continuously discharged.

5. Adjust the water pressure (volume) using the throttle
dial.

CAUTIONThrottle dial・ In the case of using a branch pipe, the person holding the branchpipe must be notified of changes in water discharge pressurecaused from engine speed changes or discharge valve settingchanges discharged water should not be directed toward people
under any circumstances.

・ Do not look into the nozzle opening at any time.
・ Do not put fingers or hands into the discharge nozzle.

36

9. PRIME AND DISCHARGE
Performing relayed water supply (When using water from fire hydrant)
1. Decide the pump pressure in consideration of the water discharge pressure (nozzlepressure), hose pressure loss, and height loss.
Pump pressure = needed pressure + friction loss + height loss
2. Foreign materials such as dirt, gravel, iron rust, etc. may have intruded into a fire
hydrant. Before connecting a hose, open a fire hydrant to discharge water in order toremove foreign materials.
3. When using water from a fire hydrant, set a mediation metal between the delivery
hose and the suction port.
4. Set the discharge valve handle of the pump to the full open position.
5. Gradually open the fire hydrant on-off valve. However, check the water pressure fromfire hydrant with suction pressure gauge on the pump and adjust the opening of fire
hydrant, if necessary.
CAUTION ・ If the water pressure from fire hydrant is higher than 6 bar, do notcontinue to open the fire hydrant on-off valve.

・ If the water pressure from fire hydrant is higher than the requireddischarge pressure, it is not necessary to start the pump. If thewater pressure from fire hydrant has not reached the requiredpressure, start the engine.

6. If the water pressure from fire hydrant is insufficient, start the engine and adjust thepressure to the required level by operating the throttle dial. Stop increasing
discharge pressure if the suction pressure gauge shows 0.1MPa (15 psi) or below. If it
does, stop increasing the pressure and keep the throttle dial as it is.
7. To end discharging water, turn the throttle dial to the low pressure firstly, then stopthe engine, and close the fire hydrant on-off valve.
CAUTION ・ Be sure not to close the discharge valves of all the pumps and thenozzle until all the pumps stopped and the fire hydrant on-off
valve is closed.
8. Set the discharge valve to the half-open position, and open all the drain valves todrain the remaining water as maintenance after operation.

37

9. PRIME AND DISCHARGE
Relay pumping operations
CAUTION ・ In the case of relay pumping operation training on level ground, If
the extension hose (inner diameter φ65) is less than 200 m, use thepumping plate (safety nozzle) attached.
Discharge port
adapterPacking
Pumping plate(Standard accessory)

Description of relay pumping operation

Water
supplyWater
supplyWater
supplyFire nozzle

Source pump Relay pumpWatersourceRelay pumpAttack pump

Suction pressure
Suction pressure
Suction pressure
Suction pressure38

9. PRIME AND DISCHARGE
Preparation for operation
WARNING・ Do not close the discharge valve of source pump, relay pumps andfire nozzle. If the discharge valves or nozzle are (is) closed, there
will be a risk of damage to the pumps and hoses with excessive
pressure or water hammer.

1. Decide how many relay pumps are needed in consideration of distance and height
between the water sauce and the fire ground.
2. Place the pumps according to the decision, and connect the hoses.
3. Make sure that the discharge valves and the fire nozzle are all opened.
4. Decide the discharge pressure of each pump in consideration of needed pressure
for next pump (or fire nozzle) and the height loss and friction loss.
Pump pressure = needed pressure + friction loss + height loss
Start the source pump
WARNING1.

・ Once the water supply has started, keep supplying it until finished.

If reduce or stop supplying water, overheat or cavitation may
occur in the relay pumps.

Start the source pump according to “Chapter 8 STARTING THE ENGINE”.

2. Start supplying water according to “Chapter 9 PRIME AND DISCHARGE”.

39

9. PRIME AND DISCHARGE
Start the Relay pump
1. Make sure that the discharge valve is opened and wait for supplied water.
2. Check that the water was supplied from the source pump. At first, the hose swells
due to air pressure. Step on a hose to judge whether the swelling of the hose is due
to water or air.
3. If it becomes clear that water was supplied to the pump, read a pressure gauge. Start
the engine if the pressure is lower than the required pressure. If the pressure is highenough, no need to start the engine.
4. Adjust the discharge pressure with throttle dial. The suction pressure decreases with
opening up the throttle. Always confirm the pressure with the suction pressure gauge.
5. If the suction pressure drops below 0.1 MPa (15 psi), order the operator of the prestage pump to increase the water pressure, and adjust the relay pump pressure by
the throttle.
6. If suction pressure rises, adjust the throttle again.
Start the Attack pump
It is the same as the relay pump case.
Finish the relay pumping operation
1. Do not close the fire nozzle.
2. Stop the attack pump running first.
3. Stop the relay pump running from the pump near the nozzle.
4. Finally, stop the source pump.
CAUTION ・ Do not touch the exhaust pipe and the muffler
while the engine is running, or for more than 10
minutes after the engine has been stopped.

・ Confirm the engine temperature is cooled down

enough. These parts are very hot and will cause
severe burns.

40

10. STOPPING THE ENGINE
1. Return the throttle dial to “LOW” position.
LOW

Close

2. Close the discharge valve.
Screw down discharge valve ――――――――→
Turn the discharge valve handle to the left (Clockwise).

Ball cock discharge valve ――――――――――→

Close

Turn the discharge valve handle to close.
The discharge port can be turned approximately 90
degrees.

3. Stop the engine.

OFF

Turn off the main switch.
4. Close the fuel cock.

5. Open all the drain valves to drain water. Referto ”Chapter 11 MAINTENANCE AFTER OPERATION”.

41

Main switch

11. MAINTENANCE AFTER OPERATION
Drain Water
1. Open the drain valves and drain all the waterfrom the pump.
Do not leave water in the pump.
2. Close the drain valves for the next operation.

Close
Drain valve

Open
Close

Open

For ball cock discharge valve

Close
Open
Check Suction Performance
After the drainage of all the water from the pump,
1. Close all the drain valves and the suction port (with acap, etc.).
NOTE

Example of using asuction port cap

・ Close the suction port not to leak air
into the pump.

2. Turn the throttle dial to ” START ” position, start theengine, and pull down the priming lever to produce a
vacuum (within 30 seconds).

START

Priming lever
Throttle dial42

11. MAINTENANCE AFTER OPERATION
Original position
3. After a vacuum is produced, return the priming leverto the original position immediately, and stop the Start positionengine.

Priming lever
4. Check the vacuum pressure of the pressure gauge forsuction is below -0.08 MPa (-12 psi).
5. To check for vacuum leaks, leave it for 30 seconds andconfirm that the pointer of the pressure gauge forsuction keep the same pressure indicated.
Vacuum pressure gauge
6. Open the drain valve slowly to expose it to theatmosphere, and check that the pointer of thepressure gauge for suction returns to “0”.
Open

7. Close the drain valve again.
NOTE

Close

Drain valve

・ Before storing the fire pump, flush with fresh water to purge any
debris from the pump. (Salt water, muddy water, contaminated water,etc.)

・ Rubber gasket, O-ring, seal for the discharge and suction hose fitting

wear: a worn rubber seal will cause water leaks, poor vacuum, etc.
Frequent inspection of these items is mandatory.

43

11. MAINTENANCE AFTER OPERATION
Fuel／Oil
1. Fuel・ Close the fuel valve and fill fuel until the maximum levelof the fuel tank.
The maximum level can be confirm by the Indicator(Red) .
* Fuel tank capacity : 18L (4.76 gal(US))
・ Draining fuel from the carburetor.
Drain the fuel from the carburetor after using thepump each time.
a. After stopping the engine, close the fuel valve.
b. Pull the knob of the drain valve. (Fuel will flow out)c. After all the fuel has drained, release the knob.
(The drain valve will return to the closed position)d. Fuel from the drain pot could be returned to thefuel tank.

Knob

Indicator

Drain valve

Open⇔Close

Check the hose is
secured to the drainpot.

The pot must be
emptied each time.

Drain pot

CAUTION ・ Wipe off fuel using a cloth or the other materials if there is fuel outof the fuel tank.

・ Drained fuel collects into the drain pot. This must be emptied into
the fuel tank.

NOTE

・ Make sure the fuel is kept full in the fuel tank.

44

11. MAINTENANCE AFTER OPERATION
2. Engine oil
Fill the oil tank with 2-stroke engine oil up to the “F”
level.
Engine oil tank capacity: 1.6L (0.42 gal(US))
NOTE

・ Use 2-stroke engine oil of ISO-L-EGB
grade or higher.

“F” level

3. Governor oil
Check the oil level using the dipstick.
Governor oil filler port
(Dipstick hole)
NOTE

・ Use 2-stroke engine oil of ISO-L-EGB
grade or higher.

Dipstick
Dipstick

Full line markGovernor oil gauge4511. MAINTENANCE AFTER OPERATION
Cleaning strainer for prime
Remove the strainer cap and clean the strainer with fresh
water. If the strainer is dirty with dust, etc., vacuum
performance efficiency will be reduced.
CAUTION ・ When installing the strainer, exercise
care so that the O-ring does not getcaught in, and tighten the ring nut
securely. If the ring nut is nottightened completely, the vacuum
leak may occur.
NOTE

Cup
Strainer・ When assembling or disassembling thestrainer assembly, tighten or loosen
the ring nut while holding and pushing
the strainer cap.

・ When installing a strainer, pay attention

to the protrusion of the O-ring andinstall it correctly.
Otherwise, avacuum leak may occur.

(Spring)O-ringRing nut
Ring nut

・ When installing a strainer, tighten thering nut while pressing the cup withyour palm.

CupO-ringSpringStrainer46

11. MAINTENANCE AFTER OPERATION
Charging battery<Battery>
WARNING・ Read the safety instructions carefully and/or warnings before
using or charging the batteries.

・ Hydrogen gases from the battery are explosive. Keep battery awayfrom flame and sparks.

・ Charge the battery in well ventilated area. Do not charge battery
in unventilated area.

・ Connecting battery cables, connect positive (+) lead first.
・ Disconnecting battery cables, disconnect negative (-) lead first.
NOTE

・ Keep surfaces of the battery clean.

<Battery charger>
WARNING・ The battery capacity must be 12V-16 Ah/5h or 12V-18Ah/10h.
・ Do not connect a cigarette lighter to the battery charger socket,
doing so many melt or burn out the socket due to overheating.

・ Hydrogen gas inside the battery may explode if something sparks.
・ Keep the battery away from flame and sparks.
・ Charge the battery in well ventilated area.
CAUTION ・ Use an automatic battery charger.
・ Use a battery charger that has an overcharge preventionfunction.
・ Read the instruction manual of the battery charger before
charging a battery.
・ Automatic charger should be kept in a dry and well-ventilated
place.

47

11. MAINTENANCE AFTER OPERATION
1. Be sure to charge the battery after each operation.

Battery charger plug socket location

2. Turn off the main switch.
3. Confirm that there is no dirt, no slack, nobacklash of the terminal.
4. Plug the charging plug to the battery
Battery charge plug and connector
charger plug connector.
5. Insert the input plug to the alternative current source.
6. Confirm the battery charging status referring thebattery instruction manual.
Main switch
7. Disconnect the battery charger plug from theconnector when using or moving the pump.
NOTE・ If the main switch is on, the battery
cannot be charged.

・ Pull out the battery charger plug fromthe connector when using or moving
the pump.

48

12. MAINTENANCE IN COLD CONDITION
Infuse anti-freezing fluid
CAUTION

If the temperature around the pump could be subzero, the insideof the pump can be frozen up. In this case, the pump or the vacuum
pump may not be operated, and also the pump unit including
engine and muffler, may be damaged or broken.
In order to prevent internal corrosion and freeze damage by thewater in the pump, drain all the water from the pump unit.
After draining the water, put antifreeze fluid into the pump andvacuum pump.

<For pump unit>

Close

1. Open the drain valves. Drain all the waterfrom the pump.

Open

Drain valve

Close

If the ball cock discharge valve has a drain valve at thebottom of the valve, also drain water from this valve.
2. Close all the drain valves and the suction port (with acap, etc.).

Open
Ball cock discharge valve
Drain valve*Close the suction port not to leak air into the pump.
Close

Open

Example of using asuction port cap

49

12. MAINTENANCE IN COLD CONDITION
3. Attach the plastic tube to the pump drain valve andopen the valve at the pump case.
4. Insert the plastic tube in the container filled with
antifreeze fluid.
(180 mL/0.048 gal(US) – 200 mL/0.053 gal(US)).

Antifreeze fluid

5. Turn the throttle dial at“START・SUCTION”position.

START・SUCTION

Turn on the main switch.
Priming lever
Throttle dial
6. Turn the main switch to start. Release the main switch
immediately after the engine starts.

7. After starting the engine, suck antifreeze fluid byoperating the priming lever.
NOTE

Even if antifreeze fluid disappears,
continue pulling the priming lever for
approximately 30 seconds. By thisoperation, antifreeze fluid goes every
part in the pump water line.

Return the priming lever to the original position.

50

Priming lever12. MAINTENANCE IN COLD CONDITION
8. Return the throttle dial to “LOW” position.
LOW

Throttle dial
9. Turn off the main switch.

OFF

Main switch
10. Close the fuel valve (cock).

Close<For discharge valve>
Fill antifreeze fluid into the seal area of thedischarge valve.
* To use a long nozzle containing is helpful whenpouring antifreeze fluid.
Screw down discharge valve

Ball cock discharge valve5112. MAINTENANCE IN COLD CONDITION<For primer>
1. Remove the strainer and strainer cup.
2. Inject antifreeze (undiluted 50 mL / 0.01gal) into thestrainer guide.
3. After injection, assemble the strainer.
NOTE

When assembling or disassembling thestrainer assembly, tighten or loosen
the ring nut while holding and pushing
the strainer cap.
When installing a strainer, pay attention
to the protrusion of the O-ring andinstall it correctly. Otherwise, a vacuum
leak may occur.

52

Ring nut
Cup
O-ringSpringStrainer

12. MAINTENANCE IN COLD CONDITION
Battery
As the temperature decreases, battery performance decreases. Also, if the specificgravity is low, the battery may freeze.

・ Hydrogen gas from a battery is explosive. Keep thebattery away from flames and sparks.

・ Hydrogen gases emitted from the battery will also

cause severe burn to skin and damage to clothing.

・ Charge a battery in a well-ventilated place. Do not
charge it in unventilated area.

CAUTION・ Read the instructions attached to the battery
carefully before use.

・ When charging batteries, be sure to use an
automatic battery charger.

・ Use an automatic battery charger that matches

the battery specifications. Use of a mismatched
automatic battery charger may cause the battery
to explode.

・ Keep the battery surface clean.
・ Battery life is normally 2~3 years even if a battery

is used properly. Replace with new battery every
2~3 years checking the deterioration of thecharging performance.

・ When connecting battery cables, positive (+) leadshall be connected first.
(When disconnecting battery, remove the negative(-) lead first.)

・ Battery electrolyte is very caustic acid, which willcause severe burns to skin and damage to clothing.
Battery charger
Read the instruction manual of the battery charger.
The instruction manual is packed with the charger.
CAUTION ・ Set the battery charger on a suitable noninflammable stand or fix on wall, not directly set on
the ground.

5313. USE OF ACCESSORY
Pumping plate
CAUTION ・ When you use the fire pump without a nozzle as a water lifting
pump, such as pumping water out of a cellar, put the pumping
plate* with holes in between the discharge port adapter screw
and the bracket packing in order to prevent overheating of theengine and also to prevent cavitation in the pump which may
cause damages to the pump.
Pumping plate is the standard accessory.

Packing
Ball cock type

Pumping plate

Discharge port adapter(Option)Discharge port adapter(Option)Screw down type
Packing
Pumping plate
When using the pump without a nozzle, put the pumping plate between the discharge
port adaptor and the packing as shown in the figures above.
NOTE

・ Put the pumping plate as the figure shown above, so that pressure forcooling water in the pump is maintained at certain level. Then you can
use the pump without a discharge nozzle.

5414. PERIODICAL INSPECTION
Pay serious attention to keep the pump in a good condition.
1. To store a fire pump properly:
・ Place it in a level place.
・ Keep it in a dry area. High humidity may cause corrosion in some parts of the pump.
2. Keep the fire pump free of dust.
3. Keep the fuel in the fuel tank full.
4. Fill the governor case with 2-stroke oil to proper level.
5. Run and operate the pump at least once a month.
6. Check the battery condition once a month. Add distilled water if the battery liquid
level is lower than the specific level. And charge the battery.
If the battery is maintenance free battery, do not add any water. Just charge thebattery.
7. Drain the fuel completely from the carburetor. (After using the pump each time.)
8. Replace the spark plug* when it is dirty or worn.
* No.: NGK BPR7HS-10 … Gap 0.9~1.0 mm (0.04 in)
9. Replace the V-belt of the vacuum pump if the V-belt is cracked or worn.
10. Close the suction port with the cap to avoid a foreign material entering to the pump.
Inspection intervals should be determined according to the number of hours or numberof months, whichever comes first.

55

14. PERIODICAL INSPECTION
Perform periodical inspections and maintenance according to the following
procedures.
Inspection intervals
3 years or
300hr

1 years or
100hr

0.5 years
or 50hrAfter each
operation

Description●
Fuel*2(Tank)●●

Strainer●

Fuel hose●

Carburetor
Ignition●

Spark plug

Starting
systemEngine oil
GovernoroilStarterrope

Impurities(ie. Water and/or
waste)

Clean*1

Fouling, wear, gap●

Cranking
EngineMeasureLevel
Preservation
period 6 month or
more
Degradation(ie. Stink or color)
Impurities (ofwater and/or
waste hasaccumulated)
Curling, crack,leakage,connection
Remaining fuel in
carburetor●

Fuel
SystemInspection items●

Locked or not,poor compression
pressure
Oil level●●

Oil level with oil
dipstick●

Wear, damage

56

RefuelReplace*1
Replace*1
Clean*1

Replace*1
Clean orreplace*1
Clean orreplace
Replaceparts ifnecessary*1
Refill thesame oil
RefillReplace*1

14. PERIODICAL INSPECTION
Inspection intervals●●

V-BeltStrainer
PrimingsystemPrimer(Vacuumpump)

3 years or
300hr

Battery(Sealedtype)

1 years or
100hr

Starting
system

0.5 years
or 50hrAfter each
operation

Description

Inspection items

MeasureVoltage measure

ChargeReplace*1 *3

Period of use
Wear, crack,belt,
tensionClogging or
broken mesh
Locked or not,Check
performance(-0.08MPa / -12
psi)

●
●

●

Air leak check
●

Pump
unit

Discharge

Closedvalvesdischarge
operationafter
priming
water
valve

Check
performance(1.0MPa / 145 psi)●

Vacuum leakage●

All parts

Replace*1
Cleanor
replace*1
Replaceparts ifnecessary*1
Checkpump unit
ifnecessary

Replaceparts ifnecessary*1●*1. Ask our customer service staff to replace the parts.
*2. When the preservation period is 6 months or more, then replace all the fuel. And checkthe fuel line including fuel cock regarding with clogging.
*3・Batteries that have been used for more than three years may

explode if charged.
Inspection interval which has been reached earlier in the running time and the periodic
inspection period should be the Inspection timing.

57

15. SERVICE AND MAINTENANCE
GeneralServicing and maintenance of this fire pump must only be
carried out by personnel who have professional related
knowledge and who are familiar with this fire pump andregulations regarding safety and accident prevention.
Before starting maintenance work:
Stop the engine.
Disconnect the negative terminal of the battery.
Place the pump on a level location.
Safety devices
CAUTION

Genuine parts

After safety or protective devices have been disassembled as partof servicing and maintenance work, immediately install them backto their original locations, making sure that they run normallywithout problems.

When replacing parts as part of servicing andmaintenance of this fire pump, use only Tohatsu genuine
parts.
If genuine Tohatsu parts and accessories are not used it
may adversely affect the function and safety of the fire
pump.
Therefore, for safety reason, use only Tohatsu genuine
parts.
Tohatsu bears no responsibility for any personal injuries
or equipment damage that may result from use of partsor accessories obtained from outside sources.
Environmental protection measures
Dispose of oil, fuel, batteries, etc. according to relevant
environmental laws in the region.
Do not dump to nature or sewerage.
Waste
When discarding parts, go waste in accordance withenvironmental laws in the region procedure.

58

15. SERVICE AND MAINTENANCE
Cowl removal and installation
Cowl removal
Front
Unlock knobs (wing screws) at two places. Turn theknobs to left one quarter turn.
Knob
Front cowl
Remove the cowl slowly, with care given to the area
which would be contacted with the vacuum pumptension handle.

Rear

Remove the cowl pins from the hooks.

Detach the spark plug cap at two locations.

Pull and turn the cowl at around the supporting pins.

59

Hook

15. SERVICE AND MAINTENANCE
Pass the spark plug caps through the holes for theleads.
Remove the cowl from the pins.

Remove the cowl.

NOTE

Remove the front cowl first, and therear cowl second.

Cowl installation
Assembly order is in reverse order of the opening.

Set the cowl.

Rear
Put the cowl as shown in the picture.

Pass the spark plugs through the holes for the leads.

Set the cowl with two hooks shown in the picture.

The hooks are located in 2 places. The hooks mustbe aligned to the socket of the grommet before
insert firmly.

60

Hook

15. SERVICE AND MAINTENANCE
Front
Set the cowl from upper side as shown in the picture.

The hooks are located in 2 places. The
hooks must be aligned to the sockets ofthe grommet before insert.
Lock the knobs (wing screws) at two locations. Turnthe knobs to right one quarter turn.
NOTE

Assemble the rear cowl first, and thefront cowl second.

61

Knob

15. SERVICE AND MAINTENANCE
Vacuum pump strainer
Maintenance
NOTE

Incorrect installation of the strainer
may cause a vacuum leak. Be sure to
install the strainer correctly.

Refer to “Chapter 11 MAINTENANCE AFTER OPERATION”
Wash the strainer with fresh water after each use.
Turn the ring nut while holding the strainer cup.
Remove strainer cup and the strainer.

Strainer

Wash the strainer and the strainer cup.
After washing, assemble the strainer cup and strainer,
tighten with the ring nut.
Ring nut

Cup

Engine Oil
Check the oil level after each operation.
Place the pump in a horizontal location.
Check the oil level.

Filler cap

Refill the oil until the “F” level.
NOTE

2-stroke engine oil
We recommend that you use engine oilof ISO-L-EGB grade or higher.

Confirm the filler cap closed tightly each time,
whenever you checked the oil level.

62

Oil level

15. SERVICE AND MAINTENANCE
Governor oil
Checking the governor oil level
Check the governor oil level every three months or
every 50 hours operating time.

Governor oil gauge

Place the pump in a horizontal location.
Pull out the oil dipstick, wipe it with a cloth.
Insert the oil dipstick completely.
Pull out the oil dipstick again and check the oil level.
If the oil level is under the lower line, add 2-stroke
engine oil from the oil gauge port up to the full line mark.

Full line markRefer to “Chapter 6 PREPARATION FOR OPERATION”

Vacuum pump V-belt
Check the V-belt.
Check the V-belt every year or every 100 hours
operating time.
V-belt size: A-29

63

V-belt15. SERVICE AND MAINTENANCE
Spark plug
1. Remove the plug cap, and remove the spark plug.

Plug cap

Spark plug
Electrode

2. Use a wire brush or spark plug cleaner to clean theelectrode of the spark plug.
3. Check the spark plug for excessive carbon deposits,
electrode erosion and check the washer for damage.

Washer

4. Measure the spark plug gap. If the gap is out ofspecification, replace the spark plug with the specified
spark plug.
If necessary, adjust the gap to specification.
Spark plug gap : 0.9-1.0 mm (0.04 in)
Usage limit : 1.2 mm (0.05 in)Spark plug : NGK BPR7HS-10
5. After assembling the spark plug, as far as by hand ⓐ,using a plug wrench further tightening, tighten to thespecified toque ⓑ.
Tightening torque : 27 Nm

64

Spark plug gap

15. SERVICE AND MAINTENANCE
Battery
General safety information
Follow the safety instructions on the battery.
When charging batteries, a highly explosive
oxyhydrogen gas mixture is generated.
Do not charge the battery in a poorly ventilated place.
Do not smoke near the battery.
Avoid the injury due
substances of battery.

tocaustic

Always wear protective clothing.
Always wear protective gloves.
Always wear protective glasses.
Do not tip the battery, acid would
come out through the air vents.

Disposal
Disused batteries should be disposed of according tolocal laws or regulations.
After each operation of the battery, check the voltage.
Replace the battery if necessary.
Disconnect the negative terminal of the battery
cable first, disconnect the positive terminal next.
CAUTION

There is a risk of injury. When
handling the battery, be sure to wear
safety glasses and protective gloves.

65

15. SERVICE AND MAINTENANCE
Electric equipment
Only expert electricians or trained staff members should
handle electrical equipment.
Be sure to disconnect battery cables before handlingelectrical equipment.
Disconnect the negative terminal first, disconnect thepositive terminal next.
When connecting battery cables, connect the positive
terminal first, connect the negative terminal next.
Use the fuse with the same current rating (ampere) asthat of the installed fuse. Using a fuse that has excessivehigh resistance may result in electrical equipment failures.
Fuse
Security fuses are installed in electrical circuits used inelectrical equipment.
Before replacing the fuse, isolate the cause of the shortcircuit, and take the appropriate action.
After the appropriate action has been taken, replace thefuse with a new one.
Prepare the spare fuse at all times for emergency.

Fuse box
Spare
Cap

Fuse

66

15. SERVICE AND MAINTENANCE
Suction performance check
CAUTION

1.

Limit continuous operating time of the vacuum pump to 30
seconds or less. Operating the pump for 30 seconds or more
continuously may cause the engine to overheat. If the engine
overheats, wait until it cools down.

Close all the drain valves and the suction port (with acap, etc.). Turn the throttle dial to "START・SUCTION"
position, and start the engine.
NOTE

Example of using asuction port cap

・ Close the suction port not to leak air
into the pump.

2. Pull down the priming lever to run the vacuum pump,and check that the pressure gauge for suction reads
approximately -0.08MPa (-12 psi).
Return the priming lever to the original position.

Original position
START・SUCTION

Priming lever
Throttle dial

Vacuum leak check

After completing the vacuum performance check, keep the water intake closed andmonitor the pressure gauge for suction for approximately 30 seconds to check for
vacuum leaks.
If a vacuum leak is found, isolate the cause by referring to “Chapter 16
TROUBLESHOOTING” . Then take the appropriate action and check the vacuum leakagain.

6715. SERVICE AND MAINTENANCE
Water leak check1. Connect one end of the suction hose to the suction
port.

Place the other end of the hose into the water morethan 300mm (11.8 in) from the surface, and then closethe discharge valve handle.

2. Start the engine, and pull down the priming lever to
run the vacuum pump.

3. Operate the throttle dial to raise the pump pressure
almost to 1MPa (145psi), and then check for water leaks
from each part of the pump and the cooling water
piping.

If the leak is found, isolate the cause by referring to“Chapter 16 TROUBLESHOOTING”. Then, take theappropriate action and check the water leak again.

6816. TROUBLESHOOTING
Typical causes of engine troubles are listed in the following table.
Engine seizing

Engine overheat

Engine over-rev.

Poor acceleration

Idling is too highEngine stumble or stall

Deterioration of
fuel

●

●

●

●

●

Replace withnew fuel.

Fuel filter
clogging

●

●

●

●

●

Clean out
clogging.

Fuel pipe kinkor snap

●

●

●

●

●

Fix routing ofpipe.

Carburetor

●

●

●

Throttle dial atother than “Start”
position●

Fuel and Lubrication

Oil filter clogging

Rough idlingEngine start failure●

Breather holeclogging

Starter motor does not work

●

Cause

Battery Charging failure

Out of fuelTroubleActionRefuel.

●●●Clean or replacewith new
Carburetor.

●

Set dial to “Start”
position.
Clean out
clogging.

●

●

69

●

●

Replace oil filter.
(Do not fill it up
with thedifferent brandof oil.)16. TROUBLESHOOTING

Caused by Engine unit

Caused by Playpipe

Caused by Pump unit

Cause

Floodlight, Gauge lamp, Warning lamp do not work

Insufficientwaterdischarge
Caused by suction

Water suction failure

Air leaking

Vacuum pressure defective

TroubleActionFuel and Lubrication

Out of fuel●Refuel.

Deterioration of fuel●Replace with new
fuel.

Fuel filter clogging●

Clean out clogging.

Fuel pipe kink or snap●

Fix routing of pipe.

Carburetor●

Clean or replacewith new
Carburetor.

Throttle dial at otherthan “Start” position

Set dial to “Start”
position.

Breather hole clogging

Clean out clogging.

Oil filter clogging

Replace oil filter.
(Do not fill it up withthe different brandof oil.)●70

16. TROUBLESHOOTING

●

●

●

●

Spark plug fouling(No spark or weak
spark)●●●●

ElectricalBattery charger
defective

Engine seizing

Use ofunspecified spark
plug

Engine overheat●

Engine over-rev.

Rough idling●●

Poor acceleration

Engine stumble or stall●

Battery loose
connection,
terminal
corrosion or
expiredIdling is too highEngine start failure
●

Cause

Starter motor does not work

Battery Charging failure

Spark plug cap
comes off

TroubleActionPlug in surely.
●●

Replace withspecified spark
plug.
Clean or replacewith specified
spark plug.
Clean terminal
and/or tighten aterminal screw.
Replace ifnecessary●

Check 5A fuse
and/or Battery
charger. Replace
if necessary●7116. TROUBLESHOOTING

Caused by Engine unit

Caused by Playpipe

Caused by Pump unit

Cause

Floodlight, Gauge lamp, Warning lamp do not work

Insufficientwaterdischarge
Caused by suction

Water suction failure

Air leaking

Vacuum pressure defective

TroubleActionElectrical

Spark plug cap comes
off●

Plug in surely.

Use of unspecified
spark plug●

Replace withspecified spark
plug.

Spark plug fouling (Nospark or weak spark)●

Clean or replacewith specified spark
plug.

Battery loose
connection, terminal
corrosion or expired●

Clean terminal
and/or tighten aterminal screw.
Replace ifnecessary
Check 5A fuse
and/or Battery
charger. Replace ifnecessaryBattery charger
defective72

16. TROUBLESHOOTINGEngine seizing

Engine overheat

Engine over-rev.

Poor acceleration

Idling is too high

●

●

●

ActionReplace withspare fuse.
When theblowout of thefuse happens
repeatedly,
check a cause.
15A: Battery
cable reverse
connection,
operation panel
components
5A: Charging
connector andFloodlightconnector.
Check terminals,
cords andscrews.
Replace parts if
necessary.

●

Starter motor
defective

Operation panel
defective

Rough idlingElectrical

5A fuse blown

Engine stumble or stall

15A fuse blown

Engine start failure

Cause

Starter motor does not work

Battery Charging failure

TroubleCheck input ofstarter solenoid.
(Equal tooperation panel
output.)Replace parts if
necessary.

●7316. TROUBLESHOOTING

Caused by Engine unit

Caused by Playpipe

Caused by Pump unit

Cause

Floodlight, Gauge lamp, Warning lamp do not work

Insufficientwaterdischarge
Caused by suction

Water suction failure

Air leaking

Vacuum pressure defective

TroubleElectrical

15A fuse blown●

5A fuse blown●

ActionReplace with spare
fuse.
When the blowoutof the fuse happens
repeatedly, check acause.
15A: Battery cablereverse connection,
operation panel
components
5A: Charging
connector andFloodlightconnector.

Starter motor
defective

Check terminals,
cords and screws.
Replace parts if
necessary.

Operation panel
defective

Check input ofstarter solenoid.
(Equal to operation
panel output.)
Replace parts if
necessary.

●7416. TROUBLESHOOTING●●Engine seizing●

Engine overheat●

Engine over-rev.

Rough idling●

Poor acceleration

Engine stumble or stall●

Idling is too highEngine start failure

Compression

Piston, piston ringor cylinder
excessively worn
Carbondeposition in the
combustion
chamberStarter motor does not work

Cause

Battery Charging failure

TroubleAction●Correct orreplace.

●Clean out.

SuctionSuction height
too high and/or
length too long

Place pump nearwater source
and lower
position.

Suction hose end
is not in water.

Put the tip of
hose into water
more than 30cm
deep fromsurface of water.

Suction hose
coupling loose or
gasket defective

Clean out agasket andtighten securely.
Replace a gasket
if necessary.

Suction hosestrainer cloggedwith dead leaf or
waste etc.

Clean out

Suction hose
cracking or Lining
peeling off

Repair or
replace.

75

16. TROUBLESHOOTING

Caused by Engine unit●

Caused by Playpipe

Suction height too highand/or length too long

Caused by Pump unit

Compression

Cause
Piston, piston ring or
cylinder excessively
worn
Carbon deposition in
the combustion
chamberFloodlight, Gauge lamp, Warning lamp do not work

Insufficientwaterdischarge
Caused by suction

Water suction failure

Air leaking

Vacuum pressure defective

TroubleAction●Correct or replace.

●

Clean out.

SuctionPlace pump nearwater source andlower position.
Put the tip of hose
into water morethan 30cm deep
from surface ofwater.
Clean out a gasket
and tighten
securely.
Replace a gasket if
necessary.

Suction hose end is not●in water●●●

Suction hose couplingloose or gasket
defective

●

●

●

●

●

Clean out.

●●

Repair or replace.

Suction hose strainer
clogged with dead leaf
or waste etc.
Suction hose cracking
or Lining peeling off

●

●

●

76

16. TROUBLESHOOTINGEngine seizing

Engine overheat

Engine over-rev.

Poor acceleration

Idling is too highRough idlingEngine stumble or stall

Engine start failure

Starter motor does not work

Cause

Battery Charging failure

TroubleActionPrimer
Water stop valve

Vacuum pipeloose or cracking

Tighten securely
a clump of
vacuum pipe orreplace.

Strainer cap
loose or “O” ring
failureTighten securelyor replace.

V-belt damaged
or worn

Replace.

Vacuum pumprotor shaft seizing

Repair or
replace.

Vane, Side plate
worn or damaged

Replace.

Water stop valve
contamination

Clean out.

Water stop valve
diaphragm failure

Replace.

7716. TROUBLESHOOTING

Caused by Engine unit

Caused by Playpipe

Caused by Pump unit

Cause

Floodlight, Gauge lamp, Warning lamp do not work

Insufficientwaterdischarge
Caused by suction

Water suction failure

Air leaking

Vacuum pressure defective

TroubleActionPrimer
Water stop valve

Vacuum pipe loose or
cracking●●

Tighten securely aclump of vacuum
pipe or replace.

Strainer cap loose or“O” ring failure●●

Tighten securely or
replace.

V belt damaged or
worn

●

●

Replace.

Vacuum pump rotor
shaft seizing●

Vane, Side plate
Worn or damaged●

Water stop valve
contamination●

Water stop valve
diaphragm failure●

Repair or replace.
●

Replace.

●●Clean out.

●●

Replace.

7816. TROUBLESHOOTINGEngine seizing

Engine overheat

Engine over-rev.

Poor acceleration

Idling is too highRough idlingEngine stumble or stall

Engine start failure

Starter motor does not work

Cause

Battery Charging failure

TroubleActionDrain valve is not
closedClose securely.

Suction portstrainer cloggedwith dead leaf or
waste etc.

Clean out.

Discharge valve
imperfect open●●

Open securely.

Pump

Gauge pipe
connector loose
or gasket
defective

Tighten securely.
Replace gasket if
necessary.

Pump cover bolts
loose

Tighten securely.

Pump cover Oring degradation

Clean out or
replace.

Impeller or Guide
vane caught astone ordamaged

Clean or replace.

Mechanical seal
damaged79

16. TROUBLESHOOTING

Suction port strainer
clogged with dead leaf
or waste etc.

●

Primer●●Pump cover bolts loose ●●Pump cover O-ringdegradation

●

●

●

●

Tighten securely.
Clean out or
replace.

●●

Open securely.
Tighten securely.
Replace gasket if
necessary.

●

Impeller or Guide vanecaught a stone ordamagedMechanical seal
damaged

Clean out.

●

Discharge valve
imperfect open
Gauge pipe connectorloose or gasket
defective

ActionClose securely.

●●

Caused by Engine unit

Drain valve is not
closedCaused by Playpipe

Caused by Pump unit

Cause

Floodlight, Gauge lamp, Warning lamp do not work

Insufficientwaterdischarge●

Caused by suction

Air leaking●

Water suction failure

Vacuum pressure defective

TroubleClean or replace.
Replace.

●8016. TROUBLESHOOTING●

Spray nozzle
clogged●ActionChange nozzle
for suitable size
or incorporate
safety nozzle.
Clean out.

Governor

Governoradjustment out ofspecified range
Governor link
disconnected

Engine seizing

NozzleToo large
discharge nozzle
diameterEngine overheat

Engine over-rev.

Poor acceleration

Idling is too highRough idlingEngine stumble or stall

Engine start failure

Starter motor does not work

Cause

Battery Charging failure

Trouble

●

●

● ●

81

●

●

Readjust it
securely.

●

Attach it
securely.

16. TROUBLESHOOTING

Caused by Engine unit

Caused by Playpipe

Caused by Pump unit

Cause

Floodlight, Gauge lamp, Warning lamp do not work

Insufficientwaterdischarge
Caused by suction

Water suction failure

Air leaking

Vacuum pressure defective

TroubleAction●Change nozzle forsuitable size or
incorporate safety
nozzle.

Spray nozzle clogged●

Clean out.

NozzleToo large discharge
nozzle diameter

Governor

Governor adjustment
out of specified range

Governor link
disconnected

●

●

82

●

Readjust it securely.

●

Attach it securely.

17. APPENDIX
Tightening torque specifications.

Standard Bolt

Heat Treated Bolt

M3

M4

M5

M6

M8

M10

N･m

0.7

1.6

3

6

13

27

kgf･m

0.07

0.16

0.3

0.6

1.3

2.7

9

24

47

-

-

-

0.9

2.4

4.7

N･m
kgf･m

83

18. TOOL AND STANDARD ACCESSORY
Description

Remarks

Quantity

Owner’s manual1

Tool kit bag

1

Tools (Crown spanner 21mm)

General tool1

Tools (Handle for spanner)

General tool1

Spark plug

BPR7HS－10

1

Pumping plate
Battery charger
Fuse

1
12V

1

15A

1

5A

1

Pipe

1

Floodlight (Search light)

184