OWNER'S MANUAL  Read this manual carefully before operating this machine.  
The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.  
This manual will provide you with a good basic understanding of the operation and maintenance of this machine. If you have any questions regarding the operation or maintenance of your machine, please consult a dealer.   
# IMPORTANT MANUAL INFORMATION  Particularly important information is distingui shed in this manual by the following notations.  This is the safety alert symbol.Itis used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possib le injury or death.  A WARNiNG indicates a hazardous s it u ation which,if not avoided,could result in death or serious injury.  A NoTicE indicates special pre c au- t ions that must betaken to avoid dam age to the machine or other property  TIP A TiP provides key information to make procedures easier or clearer.  # WARNING  PLEASE READ AND UNDERSTAND THIS MANUAL COMPLETELY BEFORE OPERATING THE MACHINE  # TIP  This manual should be considered a permanent part of this engine and should remain with this engine when resold.  \*Product and specifications are subject to change without notice.  
# CONTENTS  LOCATION OF IMPORTANT LABELS. 3 DESCRIPTION. 4 CONTROL FUNCTION 5 Water hose installation 5 Oil warning system. 5 Engine switch .6 Throttle lever. .6 PRE-OPERATION CHECK7Fuel ... 7 Engine oil. 8 Water priming.. .8 OPERATION......10Starting the engine ...10 Stopping the engine ... ..11 Drain of water after use... ...12 PERIODIC MAINTENANCE. ....13 Maintenance chart. ..13 Spark plug inspection.. ...14 Carburetor adjustment .14 Water leakage check. 14 Engine oil replacement.. ... 15 Air filter.... ...16 Fuel cock. 17 Fuel tank filter... ... 17 Muffler screen and spark arrester.... 18 Troubleshooting.... ......20 STORAGE .... 22 Drain the fuel.... ..22 Engine... .22 SPECIFICATIONS ...23 Dimensions ..23 Engine. ...23 Pump... .23 CONSUMER IM FORMATION ..24 Identification number records .24 Machine identification... 24 EXHAUST EMISSION CONTROL SYSTEM AND COMPONENTS 25 WIRING DIAGRAM 26 RUBBER MOUNT INSTALLATION...27  # SAFETY INFORMATION SAFETY INFORMATION # Exhaust fumes are poisonous  ·Never operate the engine in a closed area or it may cause unconsciousness and death within a shorttime.Operate the engine in a well ventilated area.  
Fuel is highly flammable and poisonous  
·Always turnoff the engine when refuelling ·Never refuel while smoking or in the vicinity of an openflame. ·Take care not to spill any fuel on the engine or muffler when refuelling. If you swallow any fuel,inhale fuel vapor,orallow any to get in your eye(s),seeyour doctor im mediately.If any fuel spills on your skin or clothing, immediately wash with soap and water and change your clothes. When operating or transporting the machine,be sure it is kept upright.Ifittilts,fuel may leak from the carburetor or fuel tank  
# Engine and muffler may be hot  ·Place the machine in a place where pedestrians or children are not likely to touch the machine  
 ·Do not place any flammable materials near the exhaust outlet during operation.  
   ·Keep the machine at least  $1\textsf{m}$  (3 ft) from buildings or other equipment, or the engine may overheat  

Do not operate the engine with a dust cover  
# LOCATION OF IMPORTANT LABELS   Please read the following labels carefully before operating this machine.  TIP  Maintain or replace safety and instruction labels,as necessary.  # DESCRIPTION  Fuel tankFuel tank capFuel cockAir filter coverSpark plugMufflerChoke leverEngine switchOil filler cap Oil drain plugRecoil starterOil warning lightThrottle leverPriming plugWater drain plug  
# CONTROL FUNCTION  Water hose installation 1. Install the hose joints on the pump 
  # NOTICEWhen installing the joint to the pump, be sure the gasket is in place  2. Connect the hoses on the joints with clamp. 
 3. Connect the strainer on the inlet hose end.
   # NOTICE  ·Be sure the hoses are installed securely or air leak will occur and water will notbe drawn up. ·Be sure the strainer is installed or pump dam age will occur.  Install the strainer A)  $\mathbf{50}\,\mathbf{mm}$  (2 in) suction port diameter for YP20G or  B)  $\mathbf{80}\,\mathbf{mm}$  (3in)suction port diameter for Y P 30 G bothwith filtering perforations 8 mm(0.31 in) or less indiameter.  Oil warning system  When the oil level falls below the lower level,the engine stops automatically.Unless you refill with oil the engine will not start again.  
 TIP  If the engine stalls or does not start,turn the engine switch to "ON"position and then pull the recoil starter If the oil warning light flickers for a few seconds, the engine oil is insufficient.Add oil and restart.  # Engine switch  The engine switch controls the ignition system.  $\textcircled{1}$  “ON" Ignition circuit is switched on. The engine can be started.  $\circleddash$  “OFF" Ignition circuit is switched off The engine will not run.  
 # Throttle lever  The throttle lever controls the engine speed.Movethe throttle lever in direction  $\textcircled{1}$  to decrease engine speed Move the throttle lever in direction  $\circleddash$  toincrease engine speed.  
 # NOTICE  Always check throttle operation before starting the engine.  
# PRE-OPERATION CHECK  TIP  Pre-operation checks should be made each time the water pump is used  # WARNING  The engine and muffler will be very hot after the engine has been run. Avoid touching the engine and muffler while they arestill hotwith anypart of your body or clothing during inspection or repair.  Fuel Make sure there is sufficient fuel in the tank.  Recommended fuel: Unleaded gasoline Fuel tank capacity: Total: 4.5 L (0.99 Imp gal, 1.19 US gal) # WARNING  ·Fuel is highly flammable and poisonous. Check“SAFETY INFORMATION"(Seepage1)carefully before refueling. ·Do not fill above the top of the fuel filter or it may overflow when the fuel heats up later and expands. ·Wipe up any spilled fuel immediately. ·After refueling, make sure the tank cap is tighte ned securely  
  # Engine oil  Make sure the engine oil is between upper and lower levels. Add oil as necessary.Insert the oil levelgauge in the filler hole without screwing it in.  $\textcircled{1}$  Upper level  $\circleddash$  Lower level 
Recommended oil: A YAMALUBE4(10W-30)0rSAE10W-30 type SE motor oil B SAE#30 C SAE#20 回SAE10WEngine oil quantity: 0.6L(0.53Impqt,0.63USqt)  # TIP  Recommended engine oil classification API Service “SE"or “SF"  # NOTICE  The water pump has been shipped without engine oil.Fill with oil or it will not start.  
# Water priming  Make sure the water is at pump casing upper level. Add water as necessary.  $\textcircled{1}$  Upperlevel  
 # NOTICE  Be sure the pump is filled up with water before starting the engine or mechanical seal damage will occur.  # TIP  ·Be sure the pump is placed on a firm place and as near to available water source as possible. The higher the suction head is the more time will be required for priming with less discharge.  
 # OPERATION  TIP  The water pump has been shipped without engine oil Fill with oil or it will not start.  $\textcircled{1}$  Upper level  
# Starting the engine  Be sure the pump is filled up with water before starting the engine.  1.Turn the fuelcock lever to the “ON" position  $\textcircled{1}$  "ON"  
 2.Turn the engine switch to the“ON"position  $\textcircled{1}$  “ON"  
 3. Turn the choke lever to the "“l" position  $\textcircled{1}$  Choke lever
 TIP  The choke is not required to start a warm engine Turn the choke lever to the operating position  4. Move the throttle lever slightly to right
 
5. Pull slowly on the recoil starter until it isengaged. then pull it briskly.   
  6. After the engine starts,warm up the engine until the engine does not stop when the choke lever is returned to the operating position.  7. Turn the choke lever back to the operating position.  $\textcircled{1}$  Operating position
   8.Set the throttle lever in desired position  $\textcircled{1}$  Decrease engine speed$\circleddash$  Increase engine speed 
  # Stopping the engine  1.Move the throttle lever fully to left
 2.Turn the engine switch to the"OFF”position  $\textcircled{1}$  “OFF"  
 3.Turn the fuel cock lever to the“OFF"position  $\textcircled{1}$  “OFF"
 
  # Drain of water afteruse  Water inside casing freezes at below  $0^{\circ}\mathrm{C}$   $(32^{\circ}\mathsf{F})$  in winter and thereby pump may possibly be broken. Afteruse,drainwater from drain port at bottom to store.  
 # High Altitude Operation  This engine may require ahigh altitude carburetor kit to ensure correct engine operation at altitudes above 4000ft.(1219meters).lf you operate your engine at altitudes above 40 o 0 ft.（1219meters)consistently haveyour local dealer perform the necessary carburetor modification.This engine should be operated in its original configuration below 4 ooo ft.（1219meters)as damage may occur if high altitude car buretork it is installed and operated below 4000 ft.(1219 meters).  
# PERIODIC MAINTENANCE  Maintenance chart Regular maintenance is most important for best performance and safe operation  # WARNING  # Stop the engine before starting maintenance work   
\*:It is recommended that these items be serviced by a dealer \*\*:Related to emission control system.  # NOTICE  Use only specified genuine parts for replacement. Ask an authorized dealer for further attention.# Spark plug inspection  You should periodically remove and inspect the spark plug.  1.Check for discoloration and remove the carbon  2. Check the spark plug type and gap   $\textcircled{1}$  Gap  
3. Install the spark plug.   # Carburetor adjustment The carburetor is a vital part of the engine.Adjusting should be left to a dealer with the professional knowledge,specialized data,and equipment to do so properly  # Water leakage check  Check for water leakage from water pump. Re tighten the bolts,plugs,band,and hose joints. ReplaceO-ringsand/or gaskets if necessary  
 # Engine oil replacement  1.Place the machine on alevel surface and warm up the engine for several minutes. Thenstop theengine. 2.Remove the oil filler cap. 3.Place an oil pan under the engine.Remove the oil drainplug so that the oil can be completely drained. 4. Check the drain plug, gasket, oil filler cap and O-ring. If damaged,replace  $\textcircled{1}$   Oil drain plug  $\circleddash$  Gasket  $\circledast$  O-ring   5. Reinstall the oil drain plug.   
6.Add engineoil tothe upper level  $\textcircled{1}$  Upper level     TIP  Recommended engine oil classification APIService“SE"or"SF"  # NOTICE  Be sure no foreign material enters the crankcase  # Air filter  1.Remove the air filter cover and element 2.Wash the element insolvent and dry 3.Oil theelement and squeeze out excess oil The element should be wet but not dripping   Recommended oil: Foam-air-filteroil or SAE#20motoroil  # NOTICE  Do not wring out the element.This could cause it to tear.  4.Insert the element into the air filter  TIP  Be sure the elements ealing surface matches the air filter so there is no air leak  # NOTICE  The engine should never run without the element; excessive piston and cylinder wear may result.  # WARNING  Never use solvent while smoking or in the vicinity of an open flame.  Fuel cock  # WARNING  Never use or be near fuel and solvent while s mok ing or in the vicinity of an open flame.  1. Stop the engine. 2. Turn the fuel cock lever to “OFF" 3.Remove the fuel cock cup and gasket. 4.Clean the cup with solvent and wipe it off 5.Check the gasket.Replace it if damaged 6.Reinstall the gasket and fuel cock cup    # WARNING  Be sure the fuel cock cup is tightened securely   # Fuel tank filter  1.Remove the fuel tank cap and filter  $\textcircled{1}$  Fuel tankcap  $\circleddash$  Fuel tank filter 2.Clean the filter with solvent If damaged, replace. 3.Wipe the filter and insert it.   # WARNING  Be sure the tank cap is tightened securely.  Muffler screen and spark arrester  # WARNING  The engine and muffler will beveryhot after the engine has been run.  Avoid touching the engine and muffler while they are still hot with any part of your body or clothing during inspection or repair.   1.Remove the muffler screen.  $\textcircled{1}$  Muffler screen  $\circleddash$  Screw   2.Usea flathead screwdriver to pry the spark arrest er out from the muffler.   3.Remove the spark arrest er.  $\textcircled{1}$  Spark arrester   4.Remove the carbon deposits on the muffler screen and spark arrest er using a wire brush.  # NOTICE  When cleaning, use the wire brush lightly to avoid damaging or scratching of the muffler screen and spark arrest er.  5.Check the muffler screen and spark arrest er Replace them if damaged.  6.Install the spark arrester TIP  Align the spark arrester projection with the hole in the muffler pipe.  $\textcircled{\scriptsize{1}}$  Projection  $\circleddash$  Hole  7. Install the muffler screen.  # Troubleshooting  
# Engine won't start  1.Fuel systems No fuel supplied to combustion chamber. o No fuel in tank .... Supply fuel. oClogged fuel line .... Clean fuel line. oForeign matter in fuel cock .... Clean fuel cock o Clogged carburetor .... Clean carburetor. 
2.Engine oil system Insufficient o Oil level is low ...Add engine oil
 3.Electrical systems  $^\circ$  Engine switch to "ON".  $\textcircled{1}$  “ON"  Poorspark Spark plug dirty with carbon or wet....Remove carbon or wipes park plug dry oFaulty ignition system... Consult dealer.   4.Compression Insufficient o Worn out piston and cylinder .... Consult dealer. o Loose cylinder head nuts .... Tighten nuts properly o Damaged gasket .... Replace gasket.   # Water does not draw up  o Loosened priming and/or drain plugs .... Tighten o Loosened hose joint and/or band .... Tighten. oDamaged O-ring and/or gaskets... Replace o Damaged mechanical seal ... Consult dealer  # STORAGE  Long term storage of your machine will require some preventive procedures to guard against deterioration   # Drain the fuel  1. Drain the fuel tank, fuel cock, and carburetor float bowl.  $\circledast$  Carburetor drain plug  2.Pour acupofSAE 10W30or 20 W 40 motor oil into the tank. 3.Shake the tank to coat the inner surfaces thorOughly. 4.Drain off the excess oil.     # Engine  1. Remove the spark plug, pour about one table- spoon of SAE 10 W 30 or 20 W 40 motor oil into sparkplug hole and reinstall the spark plug.Recoil start the engine by turning over several times(with ignition off)to coat the cylinder walls with oil. 2.Pull the recoil starter until you feel compression. Then stop pulling.(This prevents the cylinder and valves from rusting). 3.Clean exterior of themachine and apply a rust inhibitor. 4. Store the machine in a dry, well-ventilated place, with the cover placed over it. 5.The machine must remain in a vertical position whenstored,carried or operated.  6.Remove the water drain plug and drain the water  
  # SPECIFICATIONS  # CONSUMER IM FORMATION  PRI-I.D.NUMBER   
l dent if i cation number records  Record your Primary I.D.,and serial num- bers in the spaces provided,to assist you in ordering spare parts from a dealer.  Also record and keep these I.D.numbers in a separate place incaseyour machine isstolen.  Machine identification The machine serial number is stamped in the location as shown.  # TIP  The first three digits of these numbers are for model identification; the remaining digits are the unit production number.Keepa record of these numbers for reference when ordering parts from a dealer.  
# EXHAUST EMISSION CONTROL SYSTEM AND COMPONENTS  # Item  Acronym ·CARB.ASSY.,LH.&JT. CARB(Carburetor) CARBURETOR 2 · T.C.I. MAGNETO ASSY. & El (Electronic lgnition) PLUG,SPARK ·CRANKCASE1 & HEAD, PCV(Positive Crankcase CYLINDER1 Ventilation) ·AIR FILTER ASSY. ACL (Air Cleaner) ·MUFF.,2,CAP,NET,WIRE2& ARRESTER,SPARK  The above items and the corresponding acronyms are provided in accordance with U.S. EPA REGULATIONS FOR NEW NON ROADS PARK-IGNITION NON HANDHELD ENGINES and the CALIFORNIA REGULATIONS FOR 1995 AND LATER SMALL OFF ROAD ENGINES  The acronyms conform to the latest version of theSAE's recommended practice do cument J1930, “Diagnostic Acronyms, Terms, and Definitions For Electrical/Electronic System".  It is recommended that these items be serviced by a dealer  
# WIRING DIAGRAM   $\textcircled{1}$  Oil warning light  $\circleddash$  Engine switch  $\circledast$  TCI unit  $\textcircled{4}$  Spark plug  $\circledast$  Oil level switch  $\circledcirc$  Oil warning unit Colorcode  R Red Y Yellow B Black L Blue B/W Black/White 
# RUBBER MOUNT INSTALLATION