Nozzle Maintenance
A pulsing sensation felt while squeezing the spray gun
trigger may be caused by excessive pump pressure.
The principal cause of excessive pump pressure is a
nozzle clogged or restricted with foreign materials,
such as dirt, etc. To correct the problem, immediately
clean the orifice following these instructions:
1. Shut off engine and turn off water supply.
2. ALWAYS point gun in a safe direction and
squeeze spray gun trigger to release retained
high water pressure.
WARNING
The high pressure stream of water that this
equipment produces can cut through skin
and its underlying tissues, leading to serious
injury and possible amputation.
Spray gun traps high water pressure, even
when engine is stopped and water is
disconnected, which can cause injury.
• Keep high pressure hose connected to pump and spray
gun while system is pressurized.
• ALWAYS point gun in safe direction and squeeze spray
gun trigger, to release high pressure, every time you stop
engine. Engage trigger lock when not in use.
3. Remove orifice (A) from end of nozzle extension.
Separate nozzle extension from spray gun. Twist
nozzle clockwise to stream position. Using a
2mm (5/64) allen wrench, remove orifice from
end of nozzle extension (Figure 17).
A
Figure 17: Removing orifice
4. Remove nozzle extension from spray gun.
5. Remove in-line filter from other end of nozzle
extension following instructions Check In-Line
Filter.
6. Use a small paper clip to free any foreign
material clogging or restricting orifice (A)
(Figure 18).
Figure 18: Cleaning orifice
18
7. Using a garden hose, remove additional debris by
back flushing water through nozzle extension
(Figure 19). Back flush between 30 to 60
seconds. Turn adjustable nozzle extension to
stream spray and move nozzle from low to high
while flushing.
Figure 19: Backflushing the nozzle extension
8. Reinstall orifice and in-line filter into nozzle
extension. DO NOT overtighten orifice with allen
wrench.
9. Reconnect nozzle extension to spray gun.
10. Make sure garden hose is connected to water
inlet. Check that high pressure hose is connected
to spray gun and pump. Turn on water.
11. Engage trigger lock on spray gun and start
engine following instructions How to Start Your
Pressure Washer.
12. Test pressure washer by operating with nozzle in
high and low positions.
O-Ring Maintenance
Purchase an O-Ring / Maintenance Kit, part number
191922GS by contacting the nearest authorized
service center. It is not included with the pressure
washer. This kit includes replacement o-rings, rubber
washer and water inlet filter. Refer to the instruction
sheet provided in the kit to service your unit's o-rings.
• NEVER repair leaking connections with sealant of any
kind. Replace o-ring or seal.
Pump Oil Maintenance
This model does not require any pump oil
maintenance. The pump is pre-lubricated and sealed,
requiring no additional lubrication for the life of the
A
pump.
WARNING
The high pressure stream of water that this
equipment produces can cut through skin
and its underlying tissues, leading to serious
injury and possible amputation.
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