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WARNING
Make sure you completely understand all of the safety warnings and operation of each system control
component before attempting any maintenance or repair. Always drain the tank pressure completely, make sure the power cord is
unplugged, and unit has time to cool before performing any maintenance or service operations.
PROBLEM
Pump is slow to build tank pressure
Excessive oil consumption
Knocking noise
Overheating compressor
Gasoline engine is hard to start
TROUBLESHOOTING
CAUSE
Excessive leaks in system
Blown gasket
Broken reed valve
Obstructed intake filter
Leaking regulator
Defective pilot valve
Too much oil in crankcase
Improper weight of oil
Obstructed crankcase vent
Dirty/plugged intake filter
Worn piston rings
Scored cylinder
Internal pump problem
Poor ventilation
Internal pump problem
Fouled, incorrect, or improperly gapped
spark plug
Improper engine oil level
Improper weight of pump or engine oil
Improper or old gas
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SOLUTION
Correct air leaks
Replace head gaskets
Replace reed valves
Clean or replace intake element
Replace regulator
Replace pilot valve
Drain to proper level
Replace with proper oil
Replace dipstick or oil fill plug/crankcase
vent
Clean/replace intake filter
Take unit in for service
Take unit in for service
Take unit in for service
Relocate compressor
Take unit in for service
Install proper spark plug after gapping to
factory specs
Fill to top of threads for oil plug
Change to proper weight of oil for
operating temperature
Take unit in for service