Graco Roof Rigs 224483, Instructions-Parts List Manual

Page: 16 / 40

Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Check everything in the guide before disassembling
the sprayer.
Relieve the pressure before disassembling the spray-
er.
PROBLEM CAUSE SOLUTION
Engine/sprayer won’t start Engine switch not on Turn on engine switch.
Out of gas Refill gas tank.
Engine oil level low Try starting engine. If light on rear of engine
glows, replenish oil.
Spark plug cable disconnected or
spark plug damaged Connect cable on top of engine or replace
spark plug.
Adjusting the pressure control knob
doesn’t start pump Return pressure control to authorized Gra-
co dealer for repair.
Engine won’t “fire” or
“pull over” Oil seepage into combustion
chamber Remove spark plug. Pull starter rope 3 or 4
times. Clean and replace plug. Try to start.
Keep sprayer upright to avoid oil seepage.
Engine operates, but
displacement pump doesn’t Pressure control switch turned OFF Turn on pressure control switch.
Also see manual 308–126. Pressure setting too low Increase pressure.
Tip clogged Clean tip.
Displacement pump rod seized by
dry coating Service pump. See page 19.
Connecting rod worn or damaged Replace connecting rod. See page 22.
Drive housing worn or damaged Replace drive housing. See page 23.
Electrical power not energizing field Check wiring connections. See page 28.
With pressure control switch ON and pres-
sure turned to MAXIMUM, use a test light to
check continuity across black and white
wires from pressure control.
Have pressure control checked by autho-
rized Graco dealer.
Clutch worn or damaged Service clutch. See page 26.
Pinion assembly worn or damaged Service pinion assembly. See page 24.