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Troubleshooting
To reduce the risk of serious
injury
whenever you
are instwcted
to
relieve pressure, always follow the
Pressure Relief Procedure
on page
7.
Check
evetything
in
the chart before disassembling
the
sprayer.
I
PROBLEM
PROBLEM
Enginelsprayer won't start
Engine won't "fire"
I
Engine won't "fire"
CAUSE
I
SOLUTION
I
Engine
switch
not on
I
Turn
on engine
switch.
I
out of gas
Refill gas tank.
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
dealer for repair.
Return pressure control to authorized Graco
Oil seepage into combustion
chamber
Remove spark plug. Pull starter rope 3 or 4 times.
Clean and replace plug.
Tty to start. Keep spray-
er upright to avoid oil seepage.
I
Pressure control switch turned OFF
Turn on pressure control switch.
Pressure setting too
low
I
Increase
pressure.
I
~
~~
Displacement pump outlet filter dim
Service pump. See page
26.
Displacement pump rod seized by
Clean tip
or
tip filter.
l i p
or
tip filter clogged
Clean filter.
dry paint
Connecting rod worn or damaged
Replace connecting rod. See page
30.
Drive housing worn or damaged
Replace drive housing. See page 31.
~~~
Electrical power not energizing field Check wiring connections. See page
36.
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.
Slutch worn or damaged
?inion assembly worn or damaged
Service clutch. See page
34.
Clean screen.
'urnp
inlet screen clogged
Add oil.
3il level drops below oil sensor
Service pinion assembly. See page 32.
'iston ball check not seating
Service piston ball check. See page 26.
W o n packings worn or damaged
Replace packings. See page 26.
Sleeve gasket In displacement pump
Replace sleeve gasket. See page 26.
Nom or darnaged
24
308-082
,
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