DeWalt DP3400 - Manual (Page 14)

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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.
. Pull trigger on gun handle to relieve any water pressure.
3. Disconnect the spray wand from the gun.
Z
4. Remove the high-pressure nozzle from
the spray wand. Remove any obstructions
with the nozzle cleaning tool (Z) 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
U
end and removing it from water inlet of
pump.
. Clean filter by flushing it with water on both
sides.
3. Reinsert filter into water inlet of pump. Cone
U
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.
. Slide hub collar from axle and remove the
tire.
STorAGE
Engine
Consult the engine instruction manual for the manufacturer's
recommendations for storage.
Pump
The manufacturer recommends using a pump protector/winterizer,
such as DP80 when storing the unit for more than 30 days and/or
when freezing temperatures are expected. DP80 is availabe at the
store where the pressure washer was purchased. If a pump protector/
winterizer is not available, RV antifreeze or windshield washer fluid
needs to be run through the pump as outlined in the steps below.
note: Using a pump protector/ winterizer, RV antifreeze or wind-
shield washer fluid is to provide proper lubrication to the internal
seals of the pump regardless of temperature or environment.
1. Obtain a funnel, 6 oz. (170 mL) of RV antifreeze or windshield
washer fluid, and 16–36" (40–91cm) of garden hose with a male
hose connector attached to one end.