DeWalt A20832 Pump, To Clean the Water Inlet Filter, Nozzle Cleaning, To Check Oil, How To Change

Models: A20832 DP3900 GX390

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Pump

English

Engine

Consult the engine instruction manual for the manufacturer's recom- mendations for any and all maintenance.

NOTE: The pressure washer frame is equipped with an oil drain hole to help make changing the engine oil easier.

Pump

NOTE: The pump was filled with oil at the factory.

1. Change pump oil after the first 10 hours of operation and every

Nozzle Cleaning

If the nozzle becomes clogged with foreign materials, such as dirt, excessive pressure may develop. If the nozzle becomes partially clogged or restricted, the pump pressure will pulsate. Clean the nozzle immediately using the nozzle kit supplied and the following instructions:

1. Shut off the pressure washer and turn off the water supply.

2. Pull trigger on gun handle to relieve any water pressure.

3. Disconnect the spray wand from the gun.

250 hours thereafter.

4. Remove the high-pressure nozzle from

BB

TO CHECK OIL

1.The oil level should come to the dot in the middle of the sight glass (Z).

HOW TO CHANGE

H

PUMP OIL

 

 

1.

Loosen pump dipstick/oil

 

plug (H).

 

Z

2.

Place a

container

under

 

the oil drain plug (AA).

3.

Remove

pump oil

drain

 

plug.

 

AA

4.After oil is drained, replace

oil drain plug. Tighten securely.

5.Remove pump dipstick/oil plug and fill with 14 oz. (414 ml) of DP70 pump oil. If DP70 is not available use 30W non-detergent oil.

6.Replace pump dipstick/oil plug and tighten securely.

the spray wand. Remove any obstructions with the nozzle cleaning tool (BB) provid- ed and back flush with clean water.

5. Direct water supply into spray wand to back flush loosened particles for 30 seconds.

6.Reassemble the nozzle to the wand.

7.Reconnect spray wand to gun then turn on water supply.

8.Start pressure washer and place spray wand into high pressure setting to test.

To Clean the Water Inlet Filter

This filter screen (V) should

 

be checked periodically and

V

cleaned if necessary.

 

1. Remove the filter screen

 

(V) by grasping the end

 

and removing it from

V

water inlet of pump.

 

2.Clean filter by flushing it with water on both sides.

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DeWalt A20832 To Clean the Water Inlet Filter, Nozzle Cleaning, To Check Oil, How To Change, Pump Oil, English, Engine