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14
Pump
No output/low
output.
Pump is internally damaged.
Engine Does Not Start
Poor output at
higher suction lifts
Symptom Possible Cause
Suction strainer or hose is clogged or
damaged. (NOTE: liner-type hoses
can also collapse internally).
Remedy
Clean or replace components as
required.
Consult with an authorized servicing
dealer.
What to Check Possible Cause Remedy
Pump was not primed.
Pump head too high.
Suction hose too long.
Air leak in suction hose.
Prime pump.
Move discharge pipe.
Use shortest suction length possible.
Tighten all connections.
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.
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
Does the engine crank?
Good compression?
Does the tank contain
fresh fuel of the proper
grade?
Is fuel visible and
moving in the return
line when priming?
Is there spark at the spark
plug wire terminal?
Check the spark plug.
The plug is damaged internally or of
the wrong size.
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Loose spark plug.
Excess wear on cylinder, piston,
rings.
Fuel incorrect, stale, or contaminated;
mixture incorrect.
Check for clogged fuel filter
and/or vent.
The ignition switch is in “O” (OFF)
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.
Consult with an authorized
servicing dealer.
Tighten and re-test.
Consult with an authorized
servicing dealer.
Refill with fresh, clean unleaded gasoline
with a pump octane of 87 or higher
mixed with 50:1 Shindaiwa Premium
2-cycle mixing oil or with an equivalent
high quality 2-cycle mixing oil.
Replace fuel filter or vent as required.
Restart.
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” /
0.6mm-0.7mm
. Restart.
Replace the spark plug. Check the
“Specifications” section for the correct
plug for your unit. Restart.
Troubleshooting Guide (continued)