TROUBLESHOOTING GUIDE
WARNING
Pressure
Relief
Procedure
5.
Engage the gun safety latch.
Tored~cetheriskOfSeriOUsbodl~yinjury,
lncludlngfluld
8.
Open the fluid pressure drain valve and leave it
Injection, splashing
in
the eyes or
onthe
skin,
of
injury open until you s:art the sprayer again.
from moving parts, alwaysfollow this procedure when
7,
the
spa&
plug,
you
shut
off
the sprayer, when checking, adjusting or
dogged
of
fhar
presufe
is
not
My
relieved
after
fob
1.
Engage the gun safety latch.
/owing
the
sreps
above, wrap
a
rag around the tip
re-
2.
Turn the engine stop lever to
OFF.
taining nut
or
hose end
coupling
and
VERY
SLOWLY
3.
Flip the pressure control switch to OFF.
loosen the part to relieve pressure gradually. Now
4.
Disengage the gun safety latch. Hold a metal part
clear the tip
or
hose.
cleaning the system, and when changing spray tips.
You
rhe
hose
Or
Is
comP'efe&
of
the
gun
firmly to tne side of
a
grounded metal
pail,
and trigger the gun.
2
Check everything
in
the chart before disassembling
the
sprayer. (Confinued
on
page
i4)
:ngine won't 'pull over"
:ngineoperates, butdisplacement
sumpdoesn't
CAUSE
SOLUTION
Engine switch
not
on
I
Turn on.
Out
of gas
I
Replenish
I
Engine oil level low
Plug.
spark
plug damaged
Connect cable on top of engine or replace spark
Spark plug cable disconnected or
Try starting engine. If light on rear of engine
glows, replenish oil.
Water
frozen in pressure control
Retum pressure control
to
authorized Gram
I
dealer
for
repair.
I
I
Oil
seepage into combustion
I
Rernoves~ark~lu~.Pullsta~erro~3or4times.
chambir
I
Cleanandreplace~lug.Trytostari.Keepsprayer
uprlght
to
avoid oil seepage.
I
I
Pressure mntroi switch tumed
OFF
Turn on.
I
Pressure setting
too
low
I
Increase pressure.
I
Displacement pump outlet
filter
difly
I
Clean filter.
I
Tip
or
tip
filter clogged
I
Clean tip or tip
filter.
I
7
Displacement pump
rod
seized by
Service pump. See page
18.
dry
pint
Connecting rod worn or damaged Replace. See
page
20.
Drive housing worn or damaged
Check wiring connections.
See
page
16.
El&rical power not energizing field
Replace.
See
page
21.
With
pressure control switch
ON
and pressure
turned
to
MAXIMUM,
use a test light
to
check
continuity across black and white wires from
pressure control.
Have pressure control checked by authorized
Graco dealer.
Clutch worn or damaged
Service. See page
22.
Pinion assembly
worn
or damaged
%Nice. See page
24.
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