10
SYMPTOM
POSSIBLE CAUSE REMEDY
Engine won’t start
Out of gasoline Refuel
Oil level low Add oil
Switch is in off position Turn switch to “ON”
Fuel valve is in off position Turn valve to “ON”
Engine ooded Turn off choke and pull starter until excess fuel is removed
Bad spark plug Replace spark plug
No spark Check spark across plug gap
Engine air lter, wet, clogged or dirty Inspect and replace if needed, lter should be clean and dry
Defective low oil sensor switch
Check by disconnecting the wires of the sensor. See authorized
engine service center for repairs
Recoil starter pulls very hard Air pressure in the tank/s Move hand unloader to “UNLOAD” position while starting
Compressor won’t build pressure
Air leak Use a solution of soapy water to nd leak
Hand unloader in “UNLOAD” position Move to “LOAD” position
Worn piston cup and/or sleeve Remove head and valve plate to inspect, replace if needed
Broken apper valve Remove head and valve plate to inspect, replace if needed
Engine won’t return to high speed
Resistance in throttle control Clean and lubricate the cable casing and control cylinder
Resistance in throttle linkage Loosen friction nut on the throttle linkage of the engine
Safety valve blows open and engine
won’t return to idle
Control valve set incorrectly
With compressor running, adjust control valve by loosen the won’t
return to idle 9/16” hex while holding the 5/8” jam hex. Loosen
slowly-1/8 turn at a time
Compressor slow to recover
Air leak Use a solution of soapy water to nd leak
Engine run speed too low Turn run speed adjustment screw (CCW)-See engine manual
Control valve set incorrectly Refer to Control Valve section for instructions to set correctly
Throttle cable out of adjustment
Adjust throttle cable by removing the attachment screw and turning
the attachment clip (clip is threaded)
Worn piston cup and/or sleeve Remove head and valve plate to inspect. Replace if needed
Resistance in throttle control Clean and lubricate the cable casing and control cylinder
Resistance in throttle linkage Loosen friction nut on the throttle linkage of the engine
Compressor recovers fast
Control valve set incorrectly Refer to Control Valve section or instructions to set correctly
Air tanks full of water Drain water from tanks
Throttle cable out of adjustment
Adjust throttle cable by removing the attachment screw and turning
the attachment clip (clip is threaded)
TROUBLESHOOTING GUIDE
