Troubleshooting Guide (continued)
Pump
Symptom
No output/low output.
Possible Cause
Pump was not primed. Pump head too high. Suction hose too long. Air leak in suction hose.
Suction strainer or hose is clogged or damaged. (NOTE:
Pump is internally damaged.
Remedy
Prime pump.
Move discharge pipe.
Use shortest suction length possible. Tighten all connections.
Clean or replace components as required.
Consult with an authorized servicing dealer.
Poor output at higher suction lifts
Air leak in suction hose. Air leakage in pump.
Worn pump impeller or volute. Engine not operating at full rpm.
Tighten all connections. Inspect and repair as required.
Repair or replace components as required.
Consult with an authorized servicing dealer.
What to Check
Does the engine crank?
YES
Good compression?
Engine Does Not Start
Possible Cause
Faulty recoil starter.
NO Fluid in the crankcase.
Internal damage.
NO |
| Loose spark plug. | |
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| Excess wear on cylinder, piston, | ||
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| rings. |
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Remedy
Consult with an authorized servicing dealer.
Tighten and
Consult with an authorized servicing dealer.
YES
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| NO |
| Fuel incorrect, stale, or contaminated; | ||
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Does the tank contain |
| mixture incorrect. | ||||
fresh fuel of the proper |
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grade? |
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YES |
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| NO |
| Check for clogged fuel filter | ||
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Is fuel visible and |
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moving in the return |
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line when priming? |
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Refill with fresh, clean unleaded gasoline with a pump octane of 87 or higher mixed with 50:1 Shindaiwa Premium
Replace fuel filter or vent as required. Restart.
YES
Is there spark at the spark plug wire terminal?
YES
Check the spark plug.
The ignition switch is in “O” (OFF) NO position.
Shorted ignition ground. Faulty ignition unit.
If the plug is wet, excess fuel may be in the cylinder.
The plug is fouled or improperly gapped.
The plug is damaged internally or of the wrong size.
Move switch to “I” (ON) position and restart.
Consult with an authorized servicing dealer.
Crank the engine with the plug removed, reinstall the plug, and restart.
Clean and regap the plug to .024” /
Replace the spark plug. Check the
“Specifications” section for the correct plug for your unit. Restart.
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