Troubleshooting
8 311020Y
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 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 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 displacement
pump does not operate
Error code displayed? Reference pressure control repair. Page 18.
Pump switch is OFF Turn pump switch ON.
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 0.2
(LineLazer IV 3900/R300); 1.7 0.2
(LineLazer 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.
To Next Page
Loading...
Need help?
General
