313768B
Repair Kit
Piston Repair Kit
257815
- For servicing the piston on FinishPro 290 sprayers -
NOTE: For proper compressor operation, you must also replace
the valve plate assembly (kit 257836) when replacing the piston.
Pressure Relief Procedure
Important Safety Instructions
For detailed instructions and warnings,
see sprayer manual.
To reduce the risk of injury from injection, always follow
this procedure when instructed to relieve pressure,
stop spraying, service equipment, or install or clean
spray tip.
1.
Set power/function selection switch to OFF and
unplug sprayer.
2.
Turn pressure knob to lowest setting.
3.
Hold gun to side of grounded metal pail. Trigger the
gun to relieve pressure.
4.
Turn prime valve to PRIME.
If you suspect spray tip or hose is completely clogged, or
that pressure has not been fully relieved after following
these steps, VERY SLOWLY loosen tip guard retaining
nut or hose end coupling to relieve pressure gradually,
then loosen completely. Clear tip or hose obstruction.
ti9346a
ti8943a
