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2450 PSI Pressure Washer
13
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 screen, spray gun, and nozzle extension with
clean water to clear debris.
2. If screen is damaged, the maintenance kit contains a
replacement in-line filter screen and an o-ring. If
undamaged, reuse screen.
3. Place in-line filter screen into threaded end of nozzle
extension. Direction does not matter. Push the screen
in with eraser end of pencil until it rests flat at bottom
of opening.Take care to not bend screen.
4. Place o-ring into threaded end of extension. Push
o-ring snugly against in-line filter screen.
5. Assemble nozzle extension to spray gun, as described
earlier in this manual.
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 an orifice
clogged or restricted with foreign materials, such as dirt,
etc.To correct the problem, immediately clean the orifice
using the tools included with your pressure washer and
follow these instructions:
1. Shut off engine and turn off water supply.
2. Detach nozzle extension from spray gun.Twist nozzle
clockwise to stream position. Using supplied 2mm
(5/64) allen wrench, remove orifice from end of nozzle
extension (Figure 14).
3. Remove in-line filter from other end of nozzle
extension.
4. Use wire included in kit (or a small paper clip) to free
any foreign material clogging or restricting orifice
(Figure 14).
5. Using a garden hose, remove additional debris by back
flushing water through nozzle extension (Figure 15).
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.
O–Ring Maintenance
O-Rings keep the connections of the hoses and spray gun
tight and leak–free.Through normal operation of the
pressure washer, they may become worn or damaged.
An O–Ring Maintenance Kit is provided with the pressure
washer which includes replacement o-rings, rubber washer
and water inlet filter. Refer to the instruction sheet
provided in the kit to service the o-rings. Note that not all
of the parts in the kit will be used on your unit.
To remove a worn or damaged o–ring; use a small flathead
screwdriver to get underneath the o-ring and pry it off.
Orifice
Figure 14 — Removing and Cleaning Orifice
Figure 15 — Backflushing the Nozzle