6
308854
Troubleshooting
Motor runs but pump does not
stroke.
Displacement pump connecting rod pin (20).
See page 16.
Replace pin, if missing. Be sure retainer
spring (35) is fully in groove all around
connecting rod. See page 16.
Frozen or hardened paint in the pump (39).
Thaw. See NOTE 1. Plug in sprayer and turn
on. Slowly increase pressure setting to see if
motor starts.
Be sure crank in drive housing rotates; plug
in sprayer and turn on briefly to check. Turn
off and unplug sprayer.
Check drive housing assembly for damage
and replace if necessary. See page 17.
Motor is hot and runs
intermittently.
Determine if sprayer was operated at high
pressure with small tips, which causes low
motor RPM and excessive heat build up.
Decrease pressure setting or increase tip
size.
Be sure ambient temperature where sprayer
is located is no more than 90
F and sprayer
is not located in direct sun.
Move sprayer to shaded, cooler area, if
possible.
Determine if sprayer was turned on,
pressurized, but not operating for long
periods of time.
Turn off sprayer whenever you stop spraying
for a while and relieve fluid pressure.
NOTE 1:
Thaw sprayer in a warm area if water or water-based paint has frozen in it. Do not start sprayer until it has
thawed completely. If paint hardened (dried) in sprayer, replace pump packings. See manual 308798.