Troubleshooting
313483A 39
Troubleshooting
Problem Cause Solution
E=XX is displayed Fault condition exists Determine fault correction from table, page 35.
Engine will not start Engine switch is OFF Turn engine switch ON
Engine is out of gasoline Refill gas tank. Honda Engines Owner's Man-
ual.
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
Error code displayed Reference Pressure Control repair, page 61.
Applicator switch is OFF Turn applicator switch ON
Pump setting too low Turn pressure adjusting knob clockwise to
increase pressure.
Tip or tip filter is clogged Clean tip or tip filter, see manual
313537/313603.
Displacement pump piston rod is stuck
due to dried paint or texture
Repair pump, see manual 310894 or page 70.
Connecting rod is worn or damaged Replace connecting rod. Page 43.
Drive housing is worn or damaged Replace drive housing. Page 46.
Electrical power is not energizing clutch
field
Check wiring connections. Page 84.
Reference Digital Display Messages.
Page 35.
Reference wiring diagram. Page 84.
With applicator 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
(21° C), 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 57.
Pinion assembly is worn or damaged Repair or replace pinion assembly. Page 49.
Base Coat Pump: Applicator switch on
material hose and/or Prime Switch on
Pressure Control are damaged.
See page 70.
Top Coat Pump: Pump is not correctly
aligned to pump sensor or sensor is
damaged.
Rotate pump to align transducer port toward
back of sprayer. Replace damaged pump sen-
sor.
