Troubleshooting Guide - Graco GM 5000 Instructions And Parts List

Pressure Relief Procedure
To reduce the risk of serious injury, including fluid injec-
tion, splashing in the eyes or on the skin, or injury from
moving parts, always follow this procedure when you
shut off the sprayer, when checking, adjusting or clean-
ing the system, and when changing spray tips.
Engage the trigger safety latch.
Turn the engine ON/OFF switch to OFF.
Turn the pressure control switch to OFF.
Check everything in the chart before disassembling the sprayer.
PROBLEM
Engine/sprayer won't start
Engine won't "pull over"
Engine operates, but displace-
ment pump doesn't

Troubleshooting Guide

WARNING
CAUSE
Engine switch not on
Out of gas
Engine oil level low
Spark plug cable disconnected or
spark plug damaged
Water frozen in pressure control
Oil seepage into combustion
chamber
Pressure control switch turned OFF
Pressure setting too low
Displacement pump outlet filter dirty
Tip or tip filter clogged
Displacement pump rod seized by
dry paint
Connecting rod worn or damaged
Drive housing worn or damaged
Electrical power not energizing field
Clutch worn or damaged
Pinion assembly worn or damaged
Disengage the trigger safety latch. Hold a metal
part of the gun firmly to the side of a grounded
metal pail, and trigger the gun.
Engage the trigger safety latch.
Open the fluid pressure drain valve and leave it
open until you start the sprayer again.
Disconnect the spark plug.
If you suspect the hose or spray tip is completely
clogged or that pressure is not fully relieved after follow -
ing the steps above, VERY SLOWLY loosen the tip
guard or hose end coupling to relieve pressure gradual-
ly. Now clear the tip or hose obstruction.
SOLUTION
Turn on.
Replenish
Try starting engine. If light on rear of en-
gine glows, replenish oil.
Connect cable on top of engine or replace
spark plug.
Return pressure control to authorized
Graco dealer for repair.
Remove spark plug. Pull starter rope 3 or
4 times. Clean or replace plug. Try to
start. Keep sprayer upright to avoid oil
seepage.
Turn on.
Increase pressure.
Clean filter.
Clean tip or tip filter.
Service pump. See page .
Replace. See page 18.
Replace. See page 19.
Check wiring connections. See Fig. 13,
page 23.
With pressure control switch ON and
pressure turned to MAXIMUM, use a test
light to check for power at black and white
wires from pressure control.
Have pressure control checked by autho-
rized Graco dealer.
Service. See page 22.
Service. See page 20.