Filter
Top Products
5308864
Troubleshooting
WARNING
INJECTION HAZARD
To reduce risk of serious injury, including fluid injection or splashing in eyes or on skin, or injury from
moving parts, always follow Pressure Relief Procedure Warning, page 4, before checking, adjust-
ing, cleaning or shutting down sprayer.
Check everything in chart before disassembling sprayer.
PROBLEM
CAUSE SOLUTION
Engine won’t start Engine switch is OFF Turn engine switch on.
Engine is out of gas Refill gas tank. Honda Engines Owner’s Manual.
Engine oil level low Try to start engine. Replenish oil, if necessary.
Honda Engines Owner’s Manual.
Spark plug cable disconnected or
spark plug damaged
Connect spark plug cable or replace spark plug.
Oil seepage into combustion
chamber
Remove spark plug. Pull starter rope 3 or 4 times.
Clean or replace spark plug. Try to start engine.
Keep sprayer upright to avoid oil seepage.
Engine operates, but
Pressure control switch turned OFF Turn on.
displacement pump
doesn’t
Pressure setting too low Increase pressure.
Displacement pump outlet filter dirty Clean filter.
Tip or tip filter clogged Clean tip or tip filter.
Broken drive belt Replace belt.
Displacement pump rod seized by
dry paint
Service pump. See page 14.
Connecting rod worn or damaged Replace. See page 7.
Drive housing worn or damaged Replace. See page 8.
Electrical power not energizing clutch field Check wiring connections. See page 20.
Reference control board diagnostics. See page 13.
With pressure control switch ON and pressure
turned to MAXIMUM, use a test light to check for
power between clutch terminals on control board.
Remove black clutch wires from control board and
measure resistance across wires. At 70_ F, the
resistance must be between 1.7
±0.2Ω; if not, re-
place pinion housing.
Have pressure control checked by authorized Gra-
co dealer.
Clutch worn or damaged Service. See page 9.
Pinion assembly worn or damaged Service. See page 9.