DeWalt DH4240B Instruction Manual page 16

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.
Remove pump dipstick/oil plug and fill with 30W non-detergent
5.
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.
BB
AA
CC
Y
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-
e
izer, such as D WALT winterizer (DP80) when storing the unit
for more than 30 days and/or when freezing temperatures are
16
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