DeWalt DH4240B Instruction Manual download pdf (Page 16)

English

HOW TO CHANGE

PUMP OIL

1. Loosen pump dipstick/oil

plug (BB).

2. Place a container under

the oil drain plug (CC).

3. Remove pump oil drain

plug.

4. After oil is drained, replace

oil drain plug. Tighten securely.

5. Remove pump dipstick/oil plug and fill with 30W non-detergent

oil.

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

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.

4. Remove the high-pressure nozzle from the

spray wand. Remove any obstructions

with the nozzle cleaning tool (Y) provided

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 (U) should be checked periodically and cleaned if

necessary.

1. Remove the filter screen (U) by grasping the

end and removing it from water inlet of

pump.

2. Clean filter by flushing it with water on both

sides.

3. Reinsert filter into water inlet of pump. Cone

side faces out.

NOTE: Do not operate pressure washer without

ﬁlter properly installed.

To Remove Tires

1. Using a 1/8" hex head wrench loosen set

screw in hub collar.

2. Slide hub collar from axle and remove the

tire.

StoraGe

Engine

Consult the engine instruction manual for the man u fac tur er's

recommendations for storage.

Pump

The manufacturer recommends using a pump protector/winter-

izer, such as D

eWALT winterizer (DP80) when storing the unit

for more than 30 days and/or when freezing temperatures are

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DeWalt DH4240B Instruction Manual Page 16

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