10
SYMPT
OM
POSSIBLE CAUSE
REMEDY
Engine won’t start
Out of gasoline
Refuel
Oil level low
Add oil
Switch is in of
f position
Turn switch to “ON”
Fuel valve is in of
f position
Turn valve to “ON”
Engine flooded
Turn of
f choke and pull starter until excess fuel is removed
Bad spark plug
Replace spark plug
No spark
Check spark across plug gap
Engine air filter
, wet, clogged or dirty
Inspect and replace if needed, filter 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 find leak
Hand unloader in “UNLOAD” position
Move to “LOAD” position
W
orn piston cup and/or sleeve
Remove head and valve plate to inspect, replace if needed
Broken flapper 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 find leak
Engine run speed too low
Turn run speed adjustment screw (CCW)-See engine manual
Control valve set incorrectly
Refer to Control V
alve 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)
W
orn 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 V
alve 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
