ENGINE DRIVEN
PUMPOPERATION MANUAL
SEK-80D
Applications
Water transportation

CONTENTSINTRODUCTION
NAME OF PARTS................................................. 2
SAFETY PRECAUTIONS..................................... 3

PREPARATIONPREPARATIONS FOR STARTING...................... 5
PREPARATIONS FOR PUMP OPERATION........ 8
Thank you for purchasing this product.
· Read this manual carefully before using the
product.
· Store the manual once you have finished reading it.
· Those who do not understand the content of
this operation manual should not operate theproduct.
· If you lend this product to another person, explain how to use the product and instruct themto read the operation manual carefully.
Please note that the illustrations and content inthis operation manual may differ to the actual
product due to changes to the specifications.

HOW TO USE THE PRODUCTSTARTING THE ENGINE AND PUMP................. 9
STOPPING THE ENGINE AND PUMP.............. 17
AFTER USING THE PRODUCT......................... 18
PERIODIC CHECKS AND MAINTENANCE....... 19
LONG-TERM STORAGE................................... 23

INSPECTION AND MAINTENANCE
TROUBLESHOOTING....................................... 24

OTHER ITEMSPERFORMANCE CARVE.................................. 26
SPECIFICATIONS.............................................. 26
SPARE PARTS................................................... 27
22-01 012355101(ENG)

NAME OF PARTS■ Engine driven pump

Discharge port
Fuel tank

Fuel filler cap
Muffler

Frame
Suction port

Battery tray

Water drain plug

Priming water filler cap

Water pumpfuel drain plug

Diesel engine

Speed control lever
Stop lever
Oil filler cap / dipstickOil drain plug

Fuel gauge

Recoil starter handle

2

Air cleaner

SAFETY PRECAUTIONS
Read these safety precautions carefully before using the product. The cautions shown here arefor using the product correctly and to prevent hazards and injury to those using the product andother people.
■ Injuries and hazards that may occur if the displayed content is ignored and the productis used incorrectly are categorized as "DANGER", "WARNING", and "CAUTION". All categories are important for safety, so always follow them.
for which it is considered highly likely a person will
DANGER Content
die or be seriously injured.
for which it is assumed a person may die or be seriWARNING Content
ously injured.
Content for which it is assumed a person may be moderately
CAUTION injured and property damage may occur.
■ Content that you must follow is described in categories.
"PROHIBITED" content that you
must not do.

"EXECUTE" content that you mustcomply with.

■ Other indications:
  …Indicates the correct way to operate
NOTICEthe product, and notes on inspection and maintenance.

WARNINGPREVENTING FIRES
Never add fuel to the fuel tank while theengine is running. Wipe away all fuel spills
with a clean cloth. Keep gasoline, kerosene,
matches, other explosives and flammableaway from the product, since the temperature around the exhaust muffler is very highduring operation.
· To prevent fire hazards and to provide
adequate ventilation, keep the pump at
least 1 m (3 ft) away from the building andother equipment during operation.
· Operate the pump on a flat, level, and firm
surface. If the pump is tilted, fuel spillage
may result.
· If you leave the pump for any reason, always turn the engine off.

PREVENTING EXHAUST GASINHALATION· Exhaust gas contains poisonous carbon
monoxide.
· Never use the pump in poorly ventilated
locations such as indoors or inside tunnels. If indoor operation is unavoidable,
provide proper ventilation so that people
and live stock will not be affected.
PREVENTING BURNS· Never touch the muffler, muffler cover orengine body while the engine is runningor hot.
· Do not open plugs or hoses if heat orpressure exists within the pump.

3

SAFETY PRECAUTIONSOTHER SAFETY ITEMSWARNING· Always wear a helmet and safety shoes(non-skid soles) and proper clothes.
· Do not operate under influence of alcohol.
· Keep children and pets away from thepump when it is in operation.
· Keep away from rotating parts while thepump is running.
· Work according to rules and regulationsof work area.

· As this product is heavy, you may be injured if you drop it on your feet or hurt
your back when moving it, so use several
people to move it.
· Know how to stop the pump quickly andunderstand how to deal with all of the controls. Never permit anyone to operate thepump without proper instructions.
NOTICE· Clear water refers to water-supply water,well-water with no heavy filth (such as
slit, clay, heavy mud).
Also, it is not suitable for seawater.
· Seawater refers to water that containsalt.
· Sandy and muddy water (suspended solids) are defined as debris “floating” within
the water.
Also, it is not suitable for seawater.

· Trash Pumps/Semi-Trash Pumps aredesigned to pump water with up to
25%/10% suspended solid* solution. If
the suspended solid percentage is higher, premature wear and failure will occur.
To properly pump water with any debris,
any solids must be in a suspension.
* Suspended solids are defined as debris“floating” within the water. The size of thesuspended solid that can be pumped isdetermined by the size of the pump.
Refer to the chart below for maximum
suspended size.

OTHER PRECAUTIONS
2. Change engine oil regularly
About one month or 25 hours after initialstarting and every 3 months or 100 hours
thereafter, change the engine oil while theengine is still warm.

While the engine is still new, applicationsof heavy loads may shorten the life of theengine. During the first 20 hours, follow the
break-in procedures.
1. Avoid overloads
During break-in period, avoid applying
heavy loads before the engine is stabilized.

NOTICE· Be sure to drain the oil while the engine
is warm, otherwise it may be difficult todrain the oil completely.

4

PREPARATIONS FOR STARTING
3. Do not overfill
Overfilling is dangerous. Do not refuelbeyond the position shown in the figure
below.

Selection and Handling of Fuel Oil
1. Selection of fuel oil
Use the most suitable diesel fuel oil forthe engine.
2. Keep dust and water out of the fuelWhen filling the fuel tank from drums,
make sure no dust or water are mixed inwith the fuel since this may lead to serious
fuel injection pump and nozzle problems.

Fuel inlet port

Fuel gauge

Usage level

Strainer
After purchasing
fuel: Allow drum tostand 3–4 days

After 3–4 days : Put asuction piple halfway
into the drum
(Water and dust accumulate in the lower
portion of the drum)

The fuel gauge displays how much fuelis remaining. The liquid level in the fuelgauge rises as the tank approaches full. If
the liquid level in the fuel gauge cannot be
confirmed, refuel as soon as possible.

CAUTIONNOTICE

Only use the recommended diesel fueloil.
Use of non-recommended fuel may cause
clogging in the fuel oil strainer, fuel injection
pump and fuel injection nozzle. This clogging often causes sudden engine stops justafter starting.

· The display is only a guide. Always
check the fuel gauge on the outside of
the tank.
· Check the indication when the product islevel. If the product is on an angle, youwill not get an accurate reading.

The fuel should have a Cetane value ofmore than 45 in order to prevent difficult
starting, misfiring and white exhaustsmoke.
Diesel fuel oil substitutes are not recommended; they may be harmful to fuelsystem components.
The fuel should be free of water anddust, because these can cause trouble
in the fuel injection pump and nozzle.

5

PREPARATIONS FOR STARTING
Fill the oil up to the mouth of the filler portwith the engine placed on the level.

WARNING

Refuel in a well ventilated area with theengine stopped. Also check that the engine has sufficiently cooled.

Engine oil capacity

1.3 L

Do not smoke or allow flames or sparks
in the area where the engine is refueledor where fuel is stored.

Upper level (H)Do not overfill the tank and make surethe filler cap is securely closed after refueling.

Lower level (L)Be careful not to spill fuel when refueling. If any fuel is spilled, make sure thearea is dry before starting the engine.

Fill up to the top of the filler
port with the engine on thelevel

Selecting and Handling Engine Oil
Use proper engine oil.
If inferior oil is used, or if the engine oil is notchanged regularly, the risks of piston seizure, piston ring sticking, accelerated wearof the cylinder liner, bearings and other moving components increases significantly. The
pump's life may be seriously shortened. We
recommend CD or Higher oil of API gradeclassification.
Always use oil with the right viscosity for theambient temperature in which the engine isbeing operated. Use the chart below whenchoosing the engine oil.
S.A.E.
servicegrade

Oil drain plug

Oil filler cap / dipstick

WARNING

Before checking the oil level, make surethe pump is sitting level.
If it is tilted, you may add either too much or
too little oil. Consequently, you may overfill
and the engine will consume too much oil
and the oil temperature will become dangerously high: or you may not add enoughoil, and the engine could seize up. Faults
caused by engine seizure are not coveredby the warranty.

20W 40
10W 3010W
20W
20

CAUTION

30

When checking the oil, simply dip thedipstick into the oil pan. Do not screw inthe dipstick.

40-30 -20 -1003040 (°C)

20 40 60 80
Operating temp

0

10

20

100 (°F)

Be sure to check the engine on a levelsurface with the engine stopped.

Recommended value
Usable limit

6

PREPARATIONS FOR STARTING
Servicing the Air Cleaner
1. Loosen the wing nut, detach the coverof the air cleaner and remove the element.

CAUTION

Do not wash the air cleaner element withdetergent.
Replace the element if output falls or abad exhaust color is noticed.
Never run the pump without an air cleaner element. Sand or foreign matter isprone to getting inside the engine, which
may hasten engine wear and tear.
2. Reattach the cover of the air cleaner
and tighten the wing nut.

Wing nut

Air cleaner cover

7

PREPARATIONS FOR PUMP OPERATION· Pump failure will occur if the suction 		strainer is not properly fitted.
The strainer keeps the size of thesuspended solids entering the pump 		to the predetermined size the pump has
been designed to handle.
· The strainer should be installed in theposition where water accumulates mosteasily. When installing on soft ground,such as gravel or sand, position wooden
boards or blocks, etc. below the strainer
to prevent it from sinking into the ground.
Alternatively, suspend the hose avoiding
the bottom.

Different accessories are suitable for different
models. Please check connection diameterand install correct parts.
2) Hose nipple
1) Coupling3) Coupling packing
Discharge hose

Coupling set

Suction hose
Hose band

2. Fix the suction side hose to the suction
port of the pump and tighten it with aband.
3. Fix the discharge port side hose to thepump and tighten it with a band.
4. Fix the end of the hose to the place
where water is required.
Ensure no obstacle is at discharge hoseside.
Do not block, kink, or obstruct the flow ofliquid through the discharge hose.
5. Fill the water pump with water. (Thiswater is called "priming water".) Remove the priming water filler cap andpour the water with a bucket or cup.
Fill up until water is discharged fromthe discharge port.
As pump is self-priming type, full fill water
fully from priming port into pump casing
before running.
Breakdowns caused by dry running are
not covered by the warranty.

Strainer
Wooden boardsor blocks
Soft ground

How to Install the Coupling
Please install coupling in order of :1) -> 2) -> 3).
If you install coupling packing not inabove
order, air leakage may result, affecting watersuction efficiency.
Preparations for Pump Operation
1. Fix the strainer at the end of the suction side hose and tighten it with thehose band. Then place it in the water.
Make sure suction hose is connected
properly. In case of no self-priming after
filling pump with water and engine is started, check suction hose connection carefully again. Most cases of no self-priming
are caused by improper hose connection.

Priming water

NOTICE· Use suction hose for suction side.
· Do not change pump diameter by altering suction hose.

Priming water
filler cap

8STARTING THE ENGINE AND PUMPElectric start

Mounting orientation

Preparing for Electric start

Key switch

1. Install the attached key switch.
Use a tool to remove the bolts indicatedby the circles.
Use the included M6 x 12 bolts to attach
the key switch.

←Tank

Recommended tightening torque9.8 ~ 11.3 N・m { 1.00 ~ 1.15 kgf・m }2. Attach the attached wire harnes.
Connect according to the wiring diagram.
②

⑧

⑧

①
Key switch①②

Wire harnes⑩(＋)③
starter motor④
Wire harnes④⑨(－)
Battery terminal

③

⑤
⑨

Brack

①
⑩

Red

⑦
Regulator⑥

Battery cord

Glow plug⑤⑤

Wire harnes⑥

Regulator④⑦
Bullet Terminal

9STARTING THE ENGINE AND PUMP
3. Install the attached regulator.
Use the regulator stay to bolt it to thespecified position.

After installation

For stays
Bolt size M8×16
Recommended tightening torque23.5 ~ 27.5 N・m { 2.4 ~ 2.8 kgf・m }For regulators
Bolt size  M6×20
Recommended tightening torque

4. Install the battery (sold separately).
Battery and battery cable are notequipped with the engine.
Please buy them usually sold in shop.
Recommended capacity of battery (5hr
Ratio)

9.8 ~ 11.3 N・m { 1.00 ~ 1.15 kgf・m }Regulator stay

Regulator

27~32 Ah(1) Place the battery on the battery tray.
(2) Secure the battery with the included
battery stays and bolts so that it does
not move.

To thewhite circle

Side view

Crankcase

Regulator

Regulator
stay
Wiring harness
grounding cord

10STARTING THE ENGINE AND PUMP
5. Connect the battery to the motor.
Connect the battery to the motor using theincluded battery cord.

INSPECTION
Batterry fluid level

Thick cable

Too low

Too high

Always handle the battery correctly to ensure maximum performance.
· Always carry out daily inspection andmaintenance, and charge the battery
before the voltage drops.
· Allowing the fluid level to get too low will
damage the battery. Add distilled water
as necessary.

Grounding cable
Connect
thick cableGood

to Plus(+) terminal of battery

ground cable to minus(-) terminal of battery* Use the nut attached to the engine
when connecting the battery. For
regulators
Recommended tightening torque

CAUTION
Do not spoil clothes and skim with battery electrolyte.
As the battery electrolyte is dilute sulfuric acid, it will damage the clothes. Wash
away when battery electrolyte sticks tothe clothes.

7.85 ~ 9.81 N・m { 0.8 ~ 1.0 kgf・m }NOTICE· When installing the cord, use the spring
washer attached to the product and tighten it with a nut.

DANGER* Attach the negative side of the battery
to the specified position using theattached bolts.
For stays
Bolt size M8×16
Recommended tightening torque23.5 ~ 27.5 N・m { 2.4 ~ 2.8 kgf・m }Do not use charge the battery if its fluid
level stands below the LOWER (lower
limit level) mark.
Otherwise, the battery component parts
may deteriorate earlier the expected,
which may shorten the battery's service
life or cause an explosion.
Immediately, add distilled water until thebattery's fluid level is between the UPPER and LOWER levels.
Some of the engine parts-e.g., fuel filter-are
not resistant to acids. Be sure to charge thebattery in a place away from the engine, following the instructions of the battery manufacturer.

11

STARTING THE ENGINE AND PUMP
* Secure a distance so that the wire
harness and muffler do not come into
contact with each other.

6. Put the cords together with a cable tie.
To keep the product running safely, tie thewire harness together with the included
cable ties.

NOTICE· Contact between the engine and the wiring can cause the cord to break due tothe heat of the engine.

NOTICE· If the harness comes into contact with ahot part, the heat will melt the harness
and cause problems.

NOTICE· Wire the battery cord so that it does notinterfere with the pump case.

12

STARTING THE ENGINE AND PUMP
4. When combined with a high-starting
load machine such as a compressor.
Use the decompression lever for asmoother start.
Raise the decompression lever and turnthe starter switch to "ST" (starting). Release the decompression lever after theengine rotates smoothly.

Electric start
1. Set the speed control level to the"starting" position.

“STARTING”
Speed
control lever

Decompression
lever

2. Setting the starter switch to "ST"(starting) rotates the starter and starts
the engine.
As soon as the engine starts, release
the starter switch.

NOTICE· If the engine does not start after starter
motor is activated for 10 seconds, wait
for about 30 seconds and try again, otherwise, damage to starter motor may
occur.
· Never set the starter switch to "ST" during operation to avoid damaging thestarter motor.

Starter switch(Panel tyle)“Switched off”
OFF

“RAISE”“Operation”“Preheating”
ON
GL“Starting”
ST

3. When the temperature is 5°C (41°F) or
less.
Leave the starter switch at "GL" (to preheat) for approximately five seconds, thenset it to "ST" (starting).

13

STARTING THE ENGINE AND PUMP
3. Push down the decompression lever.
It will return automatically when the recoil
starter (rope) is pulled.

Recoil start
NOTICE· If the temperature is below 10 ° C, werecommend starting with a electric starter.
The method of starting a diesel engine is
to ignite light oil with compression heat.
When the temperature is low, the heat ofcompression may not reach the ignition
point and may not start.

Decompression
lever

1. Put the engine speed control knob on
the "STARTING" position.

“RAISE”

NOTICE· Make sure to lower the decompression
lever and then pull the recoil starter
handle. Not doing so may cause engine
failure. Engine faults caused by not using
the decompression lever are not coveredby the warranty.

“STARTING”
Speed
control lever

4. Pull out the recoil starting handle
briskly with both hands.
Once the engine starts, slowly returnthe handle to its initial position. If you do
not return it slowly, the handle will movearound violently and may hit other parts
damaging them.

2. Pull out the recoil starter handle to thepoint where you feel strong resistance,
and then slowly return it to the initial
position.
If you do not return it slowly, the handle
will move around violently and may hitother parts damaging them.

Recoil starter handle

Recoil starter handle

NOTICE· Do not pull the handle after starting theengine. Doing so may cause engine failure.

14

STARTING THE ENGINE AND PUMP
5. Until engine rotations stabilize, put the
speed control knob into the “LOW”
position (warming up).

How to identify and treat engine reversal
If the engine reverses, engine oil will not
be sent to each part, which may cause amajor failure in a short period of time, so
please be careful.

NOTICE· Note that if the knob position goes too
far, the engine will stop.

Precautions when reversing the engine

CAUTION· If the engine reverses, the work equipment reverses and moves in the opposite direction, which may lead to an
unexpected accident.
· If the engine reverses, exhaust gas willblow out to the intake side, and the aircleaner may burn and cause a fire.
How to distinguish engine reversal(1) The engine oil pressure drops
extremely.
(2) Since the intake side becomes theexhaust, the engine sound changes,
and the exhaust gas blows out fromthe air cleaner.
(3) At the beginning of reversal, theknocking sound becomes high.

6. Wait for a while (for 2–3 minutes) until
water is discharged. If no water is discharged, perform the following actions.
· Remove the cap and add priming water.
Priming water

Priming water
filler cap· Confirm that the strainer on the suction
port side is under the water level.

15

STARTING THE ENGINE AND PUMPCAUTION

Checks during Operation

Clean water pump are only designed forpumping clean water.
Pump only water that is not intended forhuman consumption. Pumping flammableliquids, such as gasoline or fuel oils, canresult in a fire or explosion, causing serious
injury. Pumping sea water, beverages, acids, chemical solutions, or any other liquidthat promotes corrosion can damage thepump.

WARNING

Never refuel the engine while it is running or when it is hot even if the engine
is stopped.
NOTICE· Beware of water hammering
Do not allow any vehicle to run over thedischarge hose. Do not close the discharge
valve abruptly because water-hammer may
occur. This may result in heavy damage tothe pump.

NOTICE· If the water pump is operated for a longtime without discharging water, the inside of the pump may be damaged.
Breakdowns caused by dry running are
not covered by the warranty.

Collapse ofdischarge hose···

Any abnormal sound or vibration?
Is the engine misfiring or running rough?
What about the color of the exhaust gas?
(Is it black or too white?)· Is there a fuel leak?
· Has the product moved due to engine
vibrations?
If you notice any of the above, stop the engine and consult with the nearest dealer.

7. When water is discharged, set the engine speed knob according to the discharging-Volume.
Adjust the engine speed using the engine
speed control knob.

“LOW SPEED”

Do not closedischarge
valve abruptly“HIGH SPEED”

Operating Condition
·
·
·

16

Temperature: 5 to 45 °C
Humidity: 85 % or below
Height: 1,000 m or below

STOPPING THE ENGINE AND PUMP
1. Cooling-down before stopping the engine, turn the engine speed knob to the"SLOW" position and turn the engine
for about three (3) minutes.

3. Slowly pull out the recoil handle untilpressure is felt (that is, to the point in
the compression stroke where the intake and exhaust valves are closed),
and leave the handle in this position.
This prevents rust from forming while theengine is not in use.

CAUTION

Reduce the load slowly when stopping
the engine. Do not stop the engine suddenly since this may cause the temperature to rise abnormally.
2. Turn the engine speed control knob tothe "STOP" position.

“LOW SPEED”

Stop lever(red)“STOP”WARNING

If the engine continues to run even if the
speed control knob is in the "Stop" position, stop the engine by loosening the nut
on the pump's high pressure fuel pipe.
Make sure to ask your dealer to tighten
the nut after that. As this part is underhigh pressure, it is dangerous if the nut is
not tightened correctly.
Loosen the nut

17

AFTER USING THE PRODUCT
1. Drain water after use· After use, remove the drain plug at thebottom and pour water from the suction/ discharge ports so that the remaining
sand is forced out of the pump.

Water drain plug

NOTICE· Water inside may freeze at below 0 °C in
winter and may damage pump. Frosen
cracks of pump are not covered by thewarranty.
2. Make sure the liquid level is visible on
the fuel gauge.
NOTICE· If the fuel is empty, it may be difficult tostart the next time you start.
3. Confirm that the bolts and nuts aretightened properly, and if not, tighten
them.
4. Wipe away any dust and dirt on theoutside of the engine with a clean
cloth.
NOTICE· Please remove the battery after driving.

18

PERIODIC CHECKS AND MAINTENANCE
To keep the engine in good condition anddurable for a long time, periodic checks andmaintenance are very important.
The chart below indicates what checks tomake and when to make them.
The mark (●) indicates that special tools andskills are required. Consult with the dealer.

CAUTION

After the pump has been used clean thepump immediately with a cloth to prevent corrosion or to remove sediment.
Always use the specified parts. The useof replacement parts which are not of
equivalent quality may damage the product.

WARNING

Shut off the engine before performing
any maintenance. If the engine must be
run, make sure the area is well ventilated. The exhaust contains poisonous carbon monoxide gas.

NOTICE· Service more frequently when using thepump in dusty areas.
· These items should be serviced by an authorized dealer, unless you have the proper
tools and are mechanically proficient.

Maintenance schedule○:Check  ◊:Replenishment  ■:Cleaning  □:Changing●:Contact your authorized dealer for these maintenance services.
Check item
Crankcase oil

Daily

25 hours
after initial
operation

Every
100
hours

○◊

□

□

■

■

Oil filter▲

Air cleaner

Every
300
hours

Every
1500
hours

Every
3000
hours

○◊

Every
1
year

Every
2
year

□

■

□
■

■

Tail pipe of muffler
Rubber hoses andClamp bands

Every
800
hours

■

Fuel filter
Fuel tank

Every
500
hours

○

□
○

Valve clearance ●○■Nozzle ●○Injection pump ●○Battery· When the battery is used for less than 100 hours in a year, check its electrolyte yearly. (forrefillable battery's only)
NOTICE· The item marked with ▲ should be carried out when the work side is especially dusty.

19

PERIODIC CHECKS AND MAINTENANCE
How To Change the Engine Oil

Change the Air Cleaner Element

Remove the oil filler cap and drain plug anddrain the old oil while the engine is still warm.
The plug is located on the bottom of cylinder
block.
Tighten the drain plug and refill with therecommended oil. (See the section under"Preparations for starting".)

Do not wash the air cleaner element withdetergent because this is wet type.
Every year
(or earlier dirty)

Changeing time

See the section for changing the air cleaner element under "Preparations for starting".
Air cleaner element

Oil drain plug

Oil filler cap / dipstick

Cleaning Oil Filter
Loosen the fixing bolt and then pull out the oil
filter.
Cleaning time

CAUTION

Never run the engine without the element or with a defective element.

25 hours after initial peration or
100 hours

NOTICE· A clogged element hinders the flow of air tothe combustion chamber, reducing engine
output, increasing lube oil and fuel oil consumption and making starting difficult.
Make sure you replace the element regularly.

oil filter

NOTICE· You need to remove the pump to remove it.

20

PERIODIC CHECKS AND MAINTENANCE
Drain the FueI Tank and Replace Fuel Filter

Cleaning the Inside of the Pump Casing

1. Since the fuel filter is made of highquality filter paper designed to collectfine dust, remove it after every 100
hours of operation by loosening thescrew and clean it in fresh fuel.
2. Before removing the fuel filter, always
empty the fuel tank by removing thedrain plug.

Remove debris from impeller.
(Do not remove the impeller unless replacing
parts.)■ Engine driven pump

NOTICE· If the fuel filter breaks, replace it. Otherwise, dust invasion will occur, shortening
the service life of the fuel injection pumpor nozzle.
· Note that rough handling of the fuel filter
results in damage.

Impeller
Volute casing
Pump casing

Fuel filter

Screw

21

PERIODIC CHECKS AND MAINTENANCE
4. Please check if rubber / gasket packing
is installed and if there is any hole andcrack in suction hose.

Check hose at suction side
Check suction hose. In case of no suction or
small discharge, the cause is usually due to
air leakage at suction side. In such case:
1. Remove suction hose.

NG

NG

Hole and crack Flat / crushed
in hosehose

OKSuction hose(not discharge
hose)

Confirm installing packing!

Leak between the pump casing and theengine2. Start engine with water inside thepump.

A leak between the pump casing and theengine is usually due to a damaged mechanical seal. Refer to a dealer.

Recoil starter handle

3. Press the palm of your hand to cover
the suction hole and wait 30 seconds.
If you feel suction on your palm, the pumpis working fine but hose connection needs
correction.

Test for suction

22

LONG-TERM STORAGE
5. Pull the decompression lever up. Pull
the recoil starter slowly. Stop when it
feels tight. (This closes the intake andexhaust valves in compression position and prevent from rusting).

When storing the pump for long periods,
make the following preparations.
1. Fill the pump with clean water and run
the engine for about 2 minutes at low
speed.
2. Stop the engine. Drain the engine oil
while the engine is still warm and fillwith new oil.

Oil drain plug

Recoil starter handle

Oil filler cap / dipstick

6. Wipe the oil and dirt from the engine
and store in a dried place.
7. Remove the drain plug on pump anddrain water from pump fully.

3. Drain the fuel in the tank
Loosen the bolt attached to the bottom of
the tank and remove the fuel.

Water drain plug

8. Always keep the outside of the water
pump clean.
9. Make sure the engine is cold whenstoring it.

4. Push the decompression lever down(non-compression position) and hold it
while you pull the recoil starter 2 or 3
times. (Do not start the engine.)
Decompression
leverStorage Condition···“RAISE”

Temperature: -20 to 60 °C
Humidity: 85 % or below
Location: Outdoors
NOTICE· Remove the battery when storing.
Since the battry dischages even duringstorage, charge it every month in summer
or every two months in winter.

23

TROUBLESHOOTINGSYMPTOM

Cannot pull or hard to pullrecoil starter handle

Low discharge volume

Pump does not prime water

POSSIBLE CAUSE(S)CORRECTIVE ACTION

Old fuel

Replace fuel. If there is no improvement,
repair engine

Rusting inside engine

RepairBurn out of engine

RepairBlocked impeller

Dismantle & clean the impeller

Debris at impeller

Dismantle & clean the impeller

The decompression lever has not been lowered

Push down the decompression lever.

Air leakage from suction side

Check hose at suction side

Low output from engine

Check and repair engine

Damage of mechanical seal

Replace mechanical seal (Repair)

The total head (particularly the suction head) is
too high

Reduce the total head within the specification.

Thin or too long or kinks of hose

Thicken or shorten or straight.

Water leaking from discharge hose or pipe

Check and stop leakage of water

Debris at impeller

Dismantle & clean the impeller

Worn or broken impeller

Replace the impeller (Repair)

Suspended solid percentage is too highCheck the specifications and reduce the ratio

Air leaking in from suction side

Check hose and connections at suction side

Insufficient priming water inside pump casing

Fill pump with water for priming

Drain plug is not tightened

Tighten drain plug firmly.

24

TROUBLESHOOTINGSYMPTOM

Pump does not prime water

Engine does not start

Oil leakage from muffler or
air cleaner

POSSIBLE CAUSE(S)CORRECTIVE ACTION

Engine speed / rpm is too low

RepairDamage to mechanical seal

Replace mechanical seal (Repair)Wrong suction hose used

Use suction hose correctly

The atmospheric or water temperature is too hot

Use the product with water that is 45 °C(104 °F) or lower

Clogged strainer

Clean strainer

Engine rpm too low

Put speed control knob on "HIGH" position

Injection nozzle is choked / blocked

RepairAir cleaner dirty

Clean air cleaner.

Incorrect engine oil level

Repair the engine if it seizes

The fuel pump is blocked

Repair or replace it

No diesel fuelRefuel fuel system

Speed control knob is not in "RUN" position

Put it on "RUN" position

Check the position of the decompression lever(low position)

Make sure to lower the decompression lever
and then pull the recoil starter handle

Recoil starter is pulled slowly

Pull it quickly and firmly

Diesel fuel does not reach fuel injection pump or
nozzleCleaning or replacing the fuel filter

Abnormal sound from fuel injection nozzle

Check the injection nozzle

After checking above points, still engine does
not start

Possibility of damage, inner parts of engine(Repair)

Wiring is incorrect

Please check P.9 of the instruction manual.

Incorrect battery capacity

Check if the battery capacity is the recommended value (27-32h).

The outside temperature is low

If you are trying to start with a recoil starter, try acell starter.
If you are trying to start with a cell starter, use
Preheating

Tipping of engine

Clean engine(air cleaner, injection nozzle, muffler and etc.)

25

PERFORMANCE CARVE
100

150

200

300 (USG/min)
100

250

(ft)

50

30
25

80

Total head (m)20SEK-80D

60

15

40

10

0

NOTICE2050100 200 300 400

500 600 700 800 900 1000 1100 1200

Discharge volume (L/min)· Performance ratings are guaranteed minimum, not inflated maximum.

SPECIFICATIONS
Product name

Engine driven pump

Model name

SEK-80D

Category

Self-priming, Engine driven pump

Pump

Connection dia

Suction

80 mm (3")

Discharge

80 mm (3")

Connection thread

Outer pipe thread BSP

Total head

25 m (82 ft)

Discharge volume1,150 L/min (303 USG/min)EngineMax. suction head

8 m (26 ft)

Type

Vartical, Oil & Air-cooled, 4-cycle diesel engine

Model

KUBOTA OC60

Displacement

276 cm3

Rated output

4.1 kW (5.5 PS) / 3,600 rpm

Max. output

4.5 kW (6.1 PS) / 3,600 rpm

Fuel
Fuel tank capacity
Engine oil

Diesel fuelTank size: 3.1 L (0.81 USG), Usage level: 2.8 L (0.73 USG)
API Service CF, CD or CE-class (SAE #30, 20, 10W30)

Engine oil capacity

1.3 L (0.34 USG)

Continuous operating time

Approx. 2.2 hrs

Applicableliquids

Starting method

Recoil starter / Electric startConsistency

Clear water

Suspended solid percentage-

Max. solids size-

TemperatureStandard accessories

5 - 45 °C (41 - 113 °F)
1 Strainer, 2 Coupling sets, 3 Hose bands, 1 Engine tool, 1 Mounting kit for electric starting

Net weight67.0 kg (147.7 lbs)

Gross weight74.9 kg (165.1 lbs)

Product dimensions L × W × H

652 x 590 x 595

Packing dimensions L × W × H

687 x 625 x 622

For the purpose of improvement, specifications are subject to change without notice.

26

SPARE PARTSSPARE PARTS

http://www.koshinpump.com

For spare parts information, visit27

www.koshinpump.com
TEL.: +81-75-953-2499 FAX.: +81-75-954-6119
E-mail: info@koshin-ltd.co.jp
12 Kami-Hachinotsubo Kotari, Nagaokakyo City,
Kyoto 617-8511 JAPAN28