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Pump
No output/low output.
Pump is internally damaged.
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 Shindaiwa
servicing dealer.
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 Shindaiwa
servicing dealer.
Troubleshooting Guide
Vaporlock.
Valve adjustment.
Engine hot/heat soaked.
Low fuel quality.
Valve clearance too tight.
Valve clearance too loose.
Let cool completely and restart.
Refi ll with fresh, clean unleaded gasoline with a pump octane
of 89 or higher mixed with an air cooled engine oil that
meets or exceeds ISO-L-EGD and/or JASO FD classifi ed oils
at 50:1 gasoline/oil ratio.
Consult with an authorized Shindaiwa
servicing dealer. Adjust valves.
What To Check
Possible Cause
Remedy
ENGINE DOES NOT START OR HARD TO START