Graco 25M224 - Troubleshooting

Troubleshooting
22 3A4587D Operation, Repair, Parts
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 Check oil level. Replenish oil, if neces-
sary. Honda Engines Owner's Manual.
Spark plug is disconnected or dam-
aged
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 clock-
wise to increase pressure.
Fluid filter (104) is dirty Clean filter. Page 18.
Tip is clogged
Clean tip. Page 17.
Displacement pump piston rod is
stuck due to dried paint
Repair pump. Manual 309250.
Connecting rod is worn or damaged Replace connecting rod. Page 24.
Drive housing is worn or damaged Replace drive housing. Page 24 .
Electrical power is not energizing
clutch field
Check wiring connections. Page 32, 42.
Reference pressure control repair.
Page 32.
Reference wiring diagram. Page 42.
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+0.2 ohms; if not, replace
pinion housing.
Have pressure control checked by
authorized Graco dealer.
Clutch is worn, damaged, or incor-
rectly positioned
Adjust or replace clutch. Page 27.
Pinion assembly is worn or damaged Repair or replace pinion assembly. Page
27 .