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Troubleshooting
24 313313A
Troubleshooting
Problem Cause Solution
Engine will not start Engine switch is OFF Turn engine switch ON.
Engine is out of gasoline Refill gas tank. Honda Engines Owner's
Manual.
Engine oil level is low Try to start engine. Replenish oil, if necessary.
Honda Engines Owner's Manual.
Spark plug is disconnected or damaged Connect spark plug cable or replace spark plug
Cold engine Use choke
Fuel shutoff lever is OFF Move lever to ON position
Oil is seeping into combustion chamber Remove spark plug. Pull starter 3 to 4 times.
Clean or replace spark plug. Start engine.
Keep sprayer upright to avoid oil seepage
Engine operates, but displacement
pump does not operate
Pump switch is OFF Turn pump switch ON
Pressure setting too low Turn pressure adjusting knob clockwise to
increase pressure.
Fluid filter is dirty Clean filter. Manual 309640.
Tip or tip filter is clogged Clean tip or tip filter. Manual 309640.
Displacement pump piston rod is stuck
due to dried paint
Repair pump. Manual 310643.
Connecting rod is worn or damaged Replace connecting rod.
Drive housing is worn or damaged Replace drive housing. Page 34.
Electrical power is not energizing clutch
field
Check wiring connections. Page 47.
Reference Digital Display Messages. Page 60.
Reference wiring diagram. Page 67.
With pump switch ON and pressure turned to
MAXIMUM, use a test light to check for power
between clutch test points on control board.
Remove clutch wires from control board and
measure resistance across clutch coil. At 70° F,
the resistance must be between 1.2 +0.2Ω; if
not, replace pinion housing.
Have pressure control checked by authorized
Graco dealer
Clutch is worn, damaged, or incorrectly
positioned
Adjust or replace clutch. Page 37.
Pinion assembly is worn or damaged Repair or replace pinion assembly. Page 37.