Craftsman 580.6722 Check Gun and Nozzle Extension, Check In-Line Filter, Nozzle Maintenance

Check High Pressure Hose

High pressure hoses can develop leaks from wear, kinking, or abuse Inspect hose before each use

Check for cuts, leaks, abrasions, bulging of cover, or damage or movement of couplings. If any of these

conditions exist, replace hose immediately.

WARNING

NEVER repair high pressure hose. Replace it,

Replacement hose rating MUST exceed maximum pressure rating of unit,

Check Gun and Nozzle Extension

Examine hose connection to gun and make sure it is secure. Test trigger by pressing it and making sure it

springs back into place when you release it. Engage safety latch and test trigger. You should not be able to

press trigger. Replace gun immediately if it fails any of these tests.

Check In-Line Filter

Refer to the illustration and service the in-linefilter if it becomes clogged, as follows:

In-line Filter

Nozzle extension O_ring=

1Detach nozzle extension from gun and remove o-ring and screen from nozzle extension Flush screen, gun, and nozzle extension with clean water to clear debris.

2Place 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 not to bend screen.

3Place o-ring into recess. Push o-ring snugly against in-line filter screen.

4Assemble nozzle extension to spray gun, as described earlier in manual.

Purge Pump of Air and Contaminants

To remove air from the pump, follow these steps:

1Set up pressure washer as described in "Assembling Your Pressure Washer" section and connect water supply.

2.Pull spray gun trigger and hold.

3.When water stream is steady and constant, engage safety latch.

To remove contaminants from the pump, follow these steps:

1Set up pressure washer as described in "Assembling Your Pressure Washer" section, and connect water supply

2Remove nozzle extension from gun

3Start engine according to instructions in "How To Use Your Pressure Washer _ section.

4 Pull trigger on gun and hold

5When 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 nozzle following these instructions:

1.Shut off engine and turn off water supply.

2.Remove nozzle 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.

3Remove in-line filter from other end of nozzle extension.

4.Use a small paper clip to free any foreign material clogging or restricting orifice.

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.

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