Section 5: Maintenance; Nozzle Maintenance; Engine Maintenance - Troy-Bilt 20210 Operator's Manual

Check In-Line Filter
Refer to Figure 12 and service the in-line filter if it
becomes clogged, as follows:
Figure 12 — Clean In-Line Filter
Nozzle Extension
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 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, 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 a spray tip
clogged or restricted with foreign materials, such as dirt,
etc.To correct the problem, immediately clean the spray
tips following these instructions:
1. Shut off engine and turn off water supply.
2. Remove spray tip from end of nozzle extension.
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 spray tip (Figure 13).
Figure 13 — Nozzle Maintenance
Use wire here to
remove debris.
Filter Screen
O-ring
15

Section 5: Maintenance

5. Using a garden hose, remove additional debris by back
flushing water through nozzle extension (Figure 14).
Back flush between 30 to 60 seconds.
Figure 14 — Backflushing the Nozzle Extension
6. Reinstall spray tip and in-line filter into nozzle extension.
7. Reconnect nozzle extension to spray gun.
8. Reconnect water supply, turn on water, and start engine.
9. Test pressure washer by operating with each quick
connect spray tips.
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.
WARNING
The high pressure stream of water that this
equipment produces can pierce skin and its
underlying tissues, leading to serious injury and
possible amputation.
• NEVER repair leaking connections with sealant of any kind.
Replace o-ring or seal.

ENGINE MAINTENANCE

See the engine operator's manual for instructions on how
to properly maintain the engine.
CAUTION
Avoid prolonged or repeated skin contact with used
motor oil.
• Used motor oil has been shown to cause skin cancer in
certain laboratory animals.
• Thoroughly wash exposed areas with soap and water.
KEEP OUT OF REACH OF CHILDREN. DON'T
POLLUTE. CONSERVE RESOURCES. RETURN
USED OIL TO COLLECTION CENTERS.