Briggs & Stratton 20262 Engine Maintenance, Nozzle Maintenance, Pump Maintenance

MAINTENANCE 3700 PSI Pressure Washer PowerBOSS™

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

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

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.

Pump Maintenance

Changing Pump Oil

Change oil after first 50 hours of operation and then every 200 hours or 3 months, whichever occurs first.

NOTE: When changing pump oil, use only high quality nondetergent 30 weight oil. Use no special additives.

Change pump oil as follows:

1.Clean area around brass oil drain plug at bottom of pump.

2.Remove oil drain plug. Drain oil completely into an approved container.

3.When oil has completely drained, install oil drain plug and tighten firmly.

4.Clean area around pump oil dipstick. Remove dipstick and fill pump with recommended oil to “Full” mark on dipstick (typically 0.43L or 15 oz.).

5.Install pump oil dipstick.

6.Wipe up any spilled oil.

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.

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.

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