Craftsman 580.7524 owner manual Nozzle Maintenance, Ring Maintenance, Pump Maintenance

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.

. 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.

O-Ring Maintenance

Purchase an O-Ring Repair Kit, item number

71-75116, at your local Sears or by calling

1-800-366-PART or online at ,,m,_A,u.sears.comit. 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'so-rings.

Pump Maintenance

Changing Pump OH

Change oil every 50 hours or once yearly, whichever occurs first.

NOTE: You must purchase a premeasured bottle of pump oil, item number 190585GS, by calling

1-800-366-PART or online at www.sears.com.

Change pump oH as follows:

1.Drain engine oil and fuel from pressure washer.

2.Use a 8mm allen wrench to remove black pump oil cap between high pressure outlet and garden hose inlet.

"_ Oil Cap

Insert wire into orifice and turn back and forth to clear obstruction.

. Using a garden hose, remove additional debris by back flushing water through nozzle extension. 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 indine 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.

3.Tilt pressure washer to drain oil into an approved container until it drips slowly from pump.

4.Tilt pressure washer in opposite direction and empty premeasured pump oil bottle into same opening (a small funnel may be helpful).

5.Install black pump oil cap and tighten firmly.

6.Set pressure washer in upright position. Add fuel and engine oil.

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