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Troubleshooting
To reduce risk of injury due to sprayer starting
unexpectedly, shut off engine before performing
checks or service.
WARNING
Check everything in chart before disassembling sprayer.
PROBLEM
CAUSE SOLUTION
Engine does not start Engine switch not ON T urn engine switch ON
Outofgas Fill gas tank
Spark p lug cable disconnected or
spark p lug damaged
Connect spark plug cable or replace
spark p lug
Oil seepage into combustion
chamber
Remove spark plug. Pull starter rope 3 or
4 times. Clean and install spark plug. Try
to start. Keep sprayer upright and do not
overfill engine crankcase to avoid oil
seepage.
Oil level low Add oil to engine crankcase
Engine operates, but
displacement pump does not
Flow control set to OFF Set flow control to PRIME mode or LOW/
MED/HIGH while triggering gun
Air compressor not on or insu f ficient
air flow from compressor
Start air compressor
Increase SCFM or compressor size.
Check air passages and tips for obstruc-
tions.
Check air filter element for clogs.
Air pressure set t o low Check display for air pressure. System
requires a minimum o f 40 psi (0.2 8 MPa,
2.8 bar) to operate. Increase pressure by
adjusting air control knob.
Sprayer engine RPM too low Increase engine speed
Clutch connector into back o f circuit
board is loose.
Check and ensure a tight connection.
Air filter dirty Clean or replace filter element.
Air flow sensor dirty or damaged Check air filter.
Clean air flow sensor (see page 4) or re-
place as needed.
Air transducer failed Check display for corre ct air pressure
reading. Replace circuit board as need-
ed.
Fluid transducer failed Check connection at circuit board.
Replace fluid transducer .
Clutch not engaging Worn or damaged clutch. See page 18.
Fluid transducer failure. Air transducer
failure.
Displacement pump rod seized by
dry coating
Service pump. See page 10.