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Priming water (Fig. 6)
CAUTION:
• Do not start the pump without water in the pump case.
Otherwise mechanical seal could be damaged.
Remove priming plug and add clear water until pump
case is filled up with water. After filling tighten the priming
plug.
NOTE:
• If the water intake is not sufficient, self-priming capacity
becomes lower.
• Be sure the pump is placed on the 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 a less discharge.
CHECKING ENGINE:
– Carefully check fuel hoses and joints for looseness
and fuel leakage. Leaked fuel creates a potentially
dangerous situation.
– Check bolts and nuts for looseness. If any, retighten
them. A loose bolt or nut may cause serious engine
trouble.
– Check the engine oil and refill if necessary.
– Check the fuel level and refill if necessary. Take care
not to overfill the tank.
– Keep cylinder fins and recoil starter free of dirt, grass
and other debris.
– Wear snug fitting working clothes when operating the
engine.
OPERATION
WARNING:
• Never touch a hot engine muffler especially when
restarting the engine. The engine muffler becomes hot
after running the engine.
• Do not put your hands or foreign objects in the release
valves when the pump is in use.
WARNING:
Beware of water-hammering
• Do not allow the wheel of a vehicle to run over the
delivery hose. Do not close the delivery valve abruptly,
because a water-hammer will occur which may result in
heavy damage to the pump.
Starting:
CAUTION:
• Because the lubricating oil has not yet spread enough,
do not rev up the engine just after engine starts.
Unnecessary high-revolution shortens life of the equip-
ment or cause damage.
1. Check that the pump case is filled with water.
2. Check that the strainer is set under the water.
CAUTION:
• Employ some preventive method when the bottom of
the water is covered with mud or sand.
3. Check there is no obstacle on the mouth of delivery
hose.
4. Turn the engine I-O (ON/OFF) switch to the "I" (ON)
position.
5. Check that the throttle lever indicates "L". (Fig. 7)
6. Continue to push the primer pump until fuel comes
into the primer pump. (In general, 7 to 10 pushes.)
7. Adjust the choke lever.
– If the engine is cold or the ambient temperature is low,
close the choke lever fully. (Fig. 8)
– If the engine is warm or the ambient temperature is
high, open the choke lever half-way, or keep it fully
open.
8. Pull the starter knob gently until a certain resistance is
felt. Then, return the starter knob, and pull it strongly.
Never pull the rope to the full extension.
Once the starter knob is pulled, never release your
hand immediately. Hold the starter knob until it returns
to its original point.
If it is difficult to start the engine, open the throttle by
about 1/3.
9. Once engine starts, set choke lever to the OPEN
position if you have closed the choke lever. (Fig. 9)
10.Allow the engine to properly "warm up". Continue
warm-up operation for 2 to 3 minutes at "L" position.
Running engine:
Turn the throttle lever to middle position, and check water
come out from the delivery hose.
Finishing operation
Stopping engine
Turn the throttle lever to "L" position to set the engine at
the lowest revolution.
Turn the engine I-O (ON/OFF) switch to the "O" (OFF)
position.
Drain of water after use
Water inside the pump case freezes at below 0°C in
winter and pump may possibly break. After use, drain
water from the drain at bottom to store.
SERVICING INSTRUCTIONS
WARNING:
• Before doing any work on the equipment, always stop
the engine. Do not perform any work when the engine
is still hot.
CAUTION:
• Do not wash the engine with water during servicing.
ENGINE OIL CHANGE
WARNING:
• The engine and engine oil is still hot just after stopping
engine. Allow sufficient time for the engine and engine
oil to cool down. Otherwise a skin burn may result.
CAUTION:
• Before changing oil, check for a suitable way to dis-
pose of old oil. Do not pour it down into sewage drains,
onto garden soil or into open streams. Your local zon-
ing or environmental regulations will give you more
detailed instructions on proper disposal.
Deteriorated engine oil shortens the life of the engine.
Be sure to check the oil and level regularly.
NOTE:
• If the oil filled above the limit, it may be contaminated or
may catch fire with white smoke. Allow sufficient time
after stopping engine for the engine oil to return to the
oil tank to ensure accurate reading of the oil level.
Interval of replacement: After first 20 operating hours,
followed by every 50 operating hours.
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