Honda WB20XT, WB30XT Manual

COMPONENT IDENTIFICATION

<WB20XT>

<WB30XT>

PRE-OPERATION FOR STARTING

Connect the suction hose

Use commercially available hose, hose connector, and hose bands.
The suction hose must be of reinforced, non-collapsible construction. Suction hose length should not be longer than necessary, as pump performance is best when the pump is not far above the water level.
Self-priming time is also proportional to hose length.
The strainer that is provided with the pump should be attached to the end of the suction hose with a band, as shown.

Always install the strainer on the end of the suction hose before pumping. The strainer will exclude debris that can cause clogging or impeller damage.

Connect the discharge hose

Use a commercially available hose, hose connector, and hose band. A short, large-diameter hose is most efficient. Long or small-diameter hose increases fluid friction and reduces pump output.

NOTE:
Tighten the hose band securely to prevent the hose from disconnecting under high pressure.

Check the engine oil level

• Engine oil is a major factor affecting engine performance and service life. Non-detergent or vegetable oils are not recommended.
• Check the oil level with the pump on a level surface and the engine stopped.

Use high-detergent, premium quality 4-stroke engine oil, certified to meet or exceed U.S. automobile manufacturer's requirements for API service category SE or later (or equivalent).
Select the appropriate viscosity for the average temperature in your area.

AMBIENT TEMPERATURE

Remove the oil filler cap/dipstick and wipe it clean.
Insert the filler cap/dipstick into the oil filler neck, but do not screw it in. If the level is low, fill to the top of the oil filler neck with the recommended oil.

Running the engine with insufficient oil can cause serious engine damage.

Oil Alert System

The Oil Alert System is designed to prevent engine damage caused by an insufficient amount of oil in the crankcase. Before the oil level in the crankcase can fall below a safe limit, the Oil Alert System will automatically stop the engine (the engine switch will remain in the ON position).

If the engine stops and will not restart, check the engine oil level before troubleshooting in other areas.

Check the fuel level

Use automotive unleaded gasoline with a Research Octane Number of 91 or higher (a Pump Octane Number of 86 or higher).
Never use stale or contaminated gasoline or an oil/gasoline mixture. Avoid getting dirt or water in the fuel tank.

• Gasoline is extremely flammable and is explosive under certain conditions.
• Refuel in a well-ventilated area with the engine stopped. Do not smoke or allow flames or sparks in the refueling area or where gasoline is stored.
• Be careful not to spill fuel when refueling. Spilled fuel or fuel vapor may ignite. If any fuel is spilled, make sure the area is dry before starting the engine.
• Avoid repeated or prolonged contact with skin or breathing of vapor.
  KEEP OUT OF REACH OF CHILDREN.

With the engine stopped and on a level surface, remove the fuel tank cap and check the fuel level.
Refill the tank if the fuel level is low.
Do not fill the fuel tank completely. Fill tank to approximately 25 mm (1 inch) below the top of the fuel tank to allow for fuel expansion. If may be necessary to lower the fuel level depending on operating conditions.
After refueling, make sure the tank cap is closed properly and securely.

NOTE:
Gasoline spoils very quickly depending on factors such as light exposure, temperature and time.

In worst cases, gasoline can be contaminated within 30 days. Using contaminated gasoline can seriously damage the engine (clogged carburetor, stuck valve).
Such damage due to spoiled fuel is disallowed from coverage by the warranty.

To avoid this please strictly follow these recommendations:

• Only use specified gasoline.
• Use fresh and clean gasoline.
• To slow deterioration, keep gasoline in a certified fuel container.
• If long storage (more than 30 days) is foreseen, drain fuel tank and carburetor.

Gasolines containing alcohol

If you decide to use a gasoline containing alcohol (gasohol), be sure its octane rating is at least as high as that recommended by Honda. There are two types of ''gasohol'': one containing ethanol, and the other containing methanol.
Do not use gasohol that contains more than 10% ethanol.
Do not use gasoline containing more than 5% methanol (methyl or wood alcohol) and that does not also contain co-solvents and corrosion inhibitors for methanol.

NOTE:

• Fuel system damage or engine performance problems resulting from the use of gasoline that contains more alcohol than recommended is not covered under the warranty.
• Before buying gasoline from an unfamiliar station, first determine if the gasoline contains alcohol, if it does, find out the type and percentage of alcohol used.
  If you notice any undesirable operating symptoms while using a particular gasoline. Switch to a gasoline that you know contains less than the recommended amount of alcohol.

Check the air cleaner element

Remove the wing nut, washer and air cleaner cover.
Check the element for dirt or obstruction. Clean the element if necessary.

Never run the engine without the air cleaner. Rapid engine wear will result from contaminants such as dust and dirt being drawn through the carburetor into the engine.

Check the priming water

The pump chamber should be primed with full of water before operating.

Never attempt to operate the pump without priming water, or the pump will overheat. Extended dry operation will destroy the pump seal. If the unit has been operated dry, stop the engine immediately and allow the pump to cool before adding priming water.

STARTING THE ENGINE

1. Turn the fuel valve lever to the ON position.
2. Move the choke lever to the CLOSED position.
   
   NOTE:
   Do not use the choke if the engine is warm or the ambient temperature is high.
   
3. Turn the engine switch to the ON position.
   
4. Move the throttle lever slightly to the left.
   
5. Pull the starter grip lightly until you feel resistance, then pull briskly in the direction of the arrow as shown below.
   
   Do not allow the starter grip to snap back against the engine. Return it gently to prevent damage to the starter.
   
6. If the choke lever was moved to the CLOSED position to start the engine, gradually move it to the OPEN position as the engine warms up.
   

High altitude operation

At high altitude, the standard carburetor air-fuel mixture will be excessively rich. Performance will decrease, and fuel consumption will increase.

High altitude performance can be improved by specific modifications to the carburetor. If you always operate the pump at altitudes higher than 1,500 m (5,000 feet) above sea level, have your authorized Honda dealer perform these carburetor modifications.

Even with suitable carburetor jetting, engine horsepower will decrease approximately 3.5% for each 300 m (1,000 foot) increase in altitude. The effect of altitude on horsepower will be greater than this if no carburetor modification is made.

Operation of the pump at an altitude lower than the carburetor is jetted for may result in reduced performance, overheating, and serious engine damage caused by an excessively lean air/fuel mixture.

OPERATION

Never use the pump for muddy water, rejected oil, wine, etc.

After starting the engine, move the throttle lever to the FAST position for self-priming, and check pump output.

Pump output is controlled by adjusting engine speed. Moving the throttle lever in the FAST direction will increase pump output, and moving the throttle lever in the SLOW direction will decrease pump output.

STOPPING THE ENGINE

To stop the engine in an emergency, simply turn the engine switch to the OFF position. Under normal conditions, use the following procedure.

1. Move the throttle lever fully to the right.
2. Turn the engine switch to the OFF position.
   
3. Turn the fuel valve lever to the OFF position.
   

TRANSPORTING/STORAGE

• To avoid severe burns or fire hazards, let the engine cool before transporting the pump or storing it indoors.
• When transporting the pump, turn the fuel valve to the OFF position, and keep the pump level to prevent fuel spillage. Spilled fuel or fuel vapor may ignite.

Before storing the pump for an extended period;

1. Be sure the storage area is free of excessive humidity and dust.
2. Clean the pump interior.....
   Sediment will settle in the pump if it has been used in muddy or sandy water, water containing heavy debris.
   Pump clean water through the pump before shutting down or impeller may be damaged when restarting. After flushing, remove the pump drain plug, drain as much water as possible from the pump housing and reinstall the plug.
3. Drain the fuel.....
   <WB20XT>
   1. Place an approved gasoline container below the carburetor, and use a funnel to avoid spilling fuel.
   2. Move the fuel valve lever to the OFF position, loosen the carburetor drain bolt by turning 1 to 2 turns counter clockwise and drain the fuel in the carburetor.
   3. Remove the sediment cup, and then move the fuel valve lever to the ON position and drain the fuel in the fuel tank.
   4. After all fuel has drained into the container, tighten the carburetor drain bolt securely.
   5. Reinstall a new O-ring and sediment cup.
   6. Move the fuel valve lever to the OFF position.
      

<WB30XT>

1. Place an approved gasoline container below the carburetor, and use a funnel to avoid spilling fuel.
2. Move the fuel valve lever to the ON position and loosen the carburetor drain bolt by turning 1 to 2 turns counter clockwise.
   
3. After all fuel has drained, tighten the carburetor drain bolt securely, move the fuel valve lever to the OFF position.

4. Change the engine oil.
5. Remove the spark plug, and pour about a tablespoon of clean engine oil into the cylinder. Crank the engine several revolutions to distribute the oil, then reinstall the spark plug.
6. Pull the starter grip until resistance is felt. Continue pulling until the notch on the starter pulley aligns with the hole on the recoil starter (see illustration below). At this point, the intake and exhaust valves are closed, and this will help to protect the engine from internal corrosion.
   
7. Cover the pump to keep out dust.

TROUBLESHOOTING

When the engine will not start

1. Is there enough fuel?
2. Is the fuel valve ON?
3. Is gasoline reaching the carburetor?
   To check, move the fuel valve lever to the ON position and loosen the carburetor drain screw by turning 1 to 2 turns counter clockwise.

If any fuel is spilled, make sure the area is dry before starting the engine. Spilled fuel or fuel vapor may ignite.

4. Is the engine switch ON?
5. Is there enough oil in the engine?
6. Is the spark plug in good condition?
   Remove and inspect the spark plug. Clean, readjust gap and dry the spark plug. Replace it if necessary.
7. If the engine still does not start, take the pump to your servicing dealer.

When the pump cannot pump the water

1. Is the pump fully primed?
   
2. Is the strainer clogged?
3. Are the hose bands installed securely?
4. Are the hoses damaged?
5. Is the suction head too high?
6. If the pump still does not operate, take the pump to your servicing dealer.
   

SPECIFICATIONS

Engine

*The power rating of the engine indicated in this document is the net power output tested on a production engine for the engine model and measured in accordance with SAE J1349 at 3,600 rpm (Engine Net Power) and at 2,500 rpm (Engine Max. Net Torque). Mass production engines may vary from this value.

Actual power output for the engine installed in the final machine will vary depending on numerous factors, including the operating speed of the engine in application, environmental conditions, maintenance, and other variables.

Pump

Noise

SAFETY INSTRUCTION

To ensure safe operation –

• Honda water pump is designed to give safe and dependable service if operated according to instructions. Read and understand the Owner's Manual before operating the water pump. Failure to do so could result in personal injury or equipment damage.

• Exhaust contains poisonous carbon monoxide, a colorless, odorless gas. Breathing carbon monoxide can cause loss of consciousness and may lead to death.
• If you run the pump in an area that is confined, or even partially enclosed area, the air you breathe could contain a dangerous amount of exhaust gas.
• Never run your pump inside a garage, house or near open windows or doors.

• Stop the engine before refueling.
• Gasoline is extremely flammable and explosive under certain conditions. Refuel in a well ventilated area with the engine stopped.

• The muffler becomes very hot during operation and remains hot for a while after stopping the engine. Be careful not to touch the muffler while it is hot. Let the engine cool before storing the water pump indoors.
• The engine exhaust system will be heated during operation and remain hot immediately after stopping the engine. To prevent scalding, pay attention to the warning marks attached to the water pump.

To ensure safe operation –

• Always make a pre-operation inspection before you start the engine. You may prevent an accident or equipment damage.
• For safety, never pump flammable or corrosive liquids such as gasoline or acid. Also, to avoid pump corrosion, never pump sea water, chemical solutions, or caustic liquids such as used oil, wine, or milk.
• Place the pump on a firm, level surface. If the pump is tilted or overturned, fuel spillage may result.
• To prevent fire hazards and to provide adequate ventilation, keep the pump at least 1 meter (3 feet) away from building walls and other equipment during operation. Do not place flammable objects close to the pump.
• Children and pets must be kept away from the area of operation due to a possibility of burns from the hot engine components.
• Know how to stop the pump quickly, and understand the operation of all controls. Never permit anyone to operate the pump without proper instructions.
• Gasoline is extremely flammable and is explosive under certain conditions.
  • Refuel in a well-ventilated area with the engine stopped. Do not smoke or allow flames or sparks in the refueling area or where gasoline is stored.
  • Do not overfill the tank (there should be no fuel above the upper limit mark). After refueling, make sure the tank cap is closed properly and securely.
• Be careful not to spill fuel when refueling. Spilled fuel or fuel vapor may ignite. If any fuel is spilled, make sure the area is dry before starting the engine.
• Never run the engine in an enclosed or confined area. Exhaust gas contains poisonous carbon monoxide gas; exposure can cause loss of consciousness and may lead to death.
• Before each use, look around and underneath the engine for signs of oil or gasoline leaks.

SAFETY LABEL LOCATIONS

These labels warn you of potential hazards that can cause serious injury. Read the labels and safety notes and precautions described in this manual carefully.

If a label comes off or becomes hard to read, contact your Honda dealer for a replacement.

CE mark and noise label locations
[Example: WB20XT]

Documents / Resources

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