Snapper 1662-0 Check Gun and Nozzle Extension, Check In-Line Filter, Nozzle Maintenance

Snapper 3500 PSI Pressure Washer

Check Gun and Nozzle Extension

Examine the hose connection to the spray gun and make sure it is secure. Test the trigger by pressing it and making sure it springs back into place when you release it. Put the safety latch in the on position and test the trigger. You should not be able to press the trigger.

Check In-Line Filter

Refer to Figure 16 and service the in-line filter if it becomes clogged, as follows:

Figure 16 — Clean In-Line Filter

Filter Screen

Nozzle Extension

O-ring

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 the screen, spray gun, and adjustable nozzle extension with clean water to clear debris.

2.If the screen is damaged, the o-ring kit contains a replacement in-line filter screen and an o-ring. If undamaged, reuse screen.

3.Place the in-line filter screen into the threaded end of the nozzle extension. Direction does not matter. Push the screen in with the eraser end of a pencil until it rests flat at the bottom of the opening. Take care to not bend the screen.

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

5.Assemble the nozzle extension to the spray gun, as described earlier in this manual.

•When the water supply is steady and constant, engage the safety latch.

To remove contaminants from the pump, follow these steps:

•Set up the pressure washer as described in “Preparing Pressure Washer For Use”. Connect the water supply and turn water on.

•Start the engine according to instructions in “To Start Your Pressure Washer”.

•Remove nozzle extension from spray gun.

•Squeeze the trigger on the spray gun and hold.

•When the water supply is steady and constant, engage the safety latch and reattach the 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 using the tools included with your pressure washer and follow these instructions:

1.Shut off the engine and turn off the water supply.

2.Remove the nozzle from the end of the nozzle extension (Figure 17).

Figure 17 — Nozzle Maintenance

Use wire here

to remove

debris.

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

Purge Pump of Air and

Contaminants

To remove air from the pump, follow these steps:

•Set up the pressure washer as described in “Preparing Pressure Washer For Use”. Connect the water supply and turn water on.

•Pull the trigger on the spray gun and hold.

4.Use the wire included in the kit (or a small paper clip) to free any foreign material clogging or restricting the nozzle (Figure 17).

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

(Figure 18). Back flush between 30 to 60 seconds.

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