3110208
Troubleshooting
PROBLEM CAUSE SOLUTION
E=XX is displayed Fault condition exists Determine fault correction from table, page 20.
Engine won’t start Engine switch is OFF Turn engine switch ON
Engine is out of gas Refi l l 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 cable 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 dis-
placement pump does not
operate
Error code displayed? Reference pressure control repair. Page 18.
Pump switch is OFF TurnpumpswitchON.
Pressure setting is too low Turn pressure adjusting knob clockwise to
increase pressure.
Fluid filter (11) is dirty Clean filter. Page 32.
Tip or tip filter is clogged Clean tip or tip filter. See spray gun manual.
Displacement pump piston rod is stuck due to
dried paint
Repair pump. See pump manual.
Connecting rod is worn or damaged Replace connecting rod. Page 11.
Drive housing is worn or damaged Replace drive housing. Page 12.
Electrical power is not energizing clutch field Check wiring connections. Page 16.
Reference pressure control repair. Page 18.
Reference wiring diagram. Page 34.
With pump switch ON and pressure turned to
MAXIMUM, use a test light to check for power
between clutch test points on control board.
Measure resistance across clutch coil. At 70_
F, the resistance must be between 1.2
±0.2Ω
(LineLazer IV 3900/R300); 1.7
±0.2Ω (LineLaz-
er IV 5900); if not, replace pinion housing.
Have pressure control checked by authorized
Graco dealer.
Clutch is worn, damaged, or incorrectly
positioned
Replace clutch. Page 13.
Pinion assembly is worn or damaged Repair or replace pinion assembly. Page 13.
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