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1. Detach spray gun and nozzle extension from high
pressure hose. Detach nozzle extension from spray gun
and remove o-ring and screen from nozzle extension.
Flush the screen, spray gun, and adjustable nozzle
extension with clean water to clear debris.
2. Place in-line filter screen into threaded end of nozzle
extension. Direction does not matter. Push screen in
with eraser end of pencil until it rests flat at bottom of
opening.Take care to not bend screen.
3. Place o-ring into recess. Push o-ring snugly against
in-line filter screen.
4. Assemble nozzle extension to spray gun.
Purge Pump of Air and
Contaminants
To remove air from the pump, follow these steps:
1. Set up pressure washer as described in “Preparing
Pressure Washer For Use”. Connect water supply and
turn water on.
2. Pull trigger on spray gun and hold.
3. When water supply is steady and constant, engage
safety latch.
To remove contaminants from the pump, follow
these steps:
1. Set up pressure washer as described in “Preparing
Pressure Washer For Use”. Connect water supply and
turn water on.
2. Remove nozzle extension from spray gun.
3. Start engine according to instructions in “How To Use
Pressure Washer”.
4. Squeeze trigger on spray gun and hold.
5. When water supply is steady and constant, engage
safety latch and refasten nozzle extension.
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. Remove orifice 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 13).
3. Remove in-line filter from other end of nozzle
extension.
4. Use a small paper clip to free any foreign material
clogging or restricting orifice (Figure 13).
5. Using a garden hose, remove additional debris by back
flushing water through nozzle extension (Figure 14).
Back flush between 30 to 60 seconds.Turn adjustable
nozzle extension to stream spray and move nozzle
from low to high while flushing.
6. Reinstall orifice and in-line filter into nozzle extension.
DO NOT overtighten orifice with allen wrench.
7. Reconnect nozzle extension to spray gun.
8. Reconnect water supply, turn on water, and start
engine.
9. Test pressure washer by operating with nozzle in high
and low positions.
Figure 14 — Backflushing the Nozzle
Section 5: Maintenance
Orifice
Figure 13 — Removing and Cleaning Orifice