Shutting Down; Maintenance; Pump; Engine - DeWalt DP3400 Instruction Manual

1. Release trigger to stop water flow.
DANGeR: Risk of injury from spray. Engage the
trigger lock (W) when gun is not in use to prevent
accidental spraying.
13. Adjust spray for the task being performed by
changing quick connect nozzle. Refer to spray
Wand nozzles.

Shutting Down

1. If chemicals were applied, place the chemical hose into a
container of clean water and draw clean water through chemical
injection system to rinse system thoroughly.
cAutIoN: Risk of property damage Failure to do so could cause
damage to the pump.
. Turn engine off. Refer to the engine instruction manual.
cAutIoN: Risk of property damage. NEvER turn water supply off
while pressure washer engine is running or damage to pump will
result.
3. Turn water source off.
4. Pull trigger on spray gun to relieve any water pressure in hose or
spray gun.
5. Refer to storage for proper storage procedures.

MAInTEnAncE

WARNING: Risk of burning. When performing maintenance, you
may be exposed to hot surfaces, water pressure or moving parts that
can cause serious injury or death.
WARNING: Risk of fire. Always disconnect, spark plug wire, let the
engine cool and release all water pressure before performing any
maintenance or repair. The engine contains flammable fuel. Do not
smoke or work near open flames while performing maintenance.
To ensure efficient operation and longer life of your pressure washer,
a routine maintenance schedule should be prepared and followed.
If the pressure washer is used in unusual conditions, such as high
W
temperatures or dusty conditions, more frequent maintenance
checks will be required.

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
50 hours thereafter.
to cHeck oIL
1. The oil level should come to the dot in the middle of the sight
glass (X).
HoW to cHanGe
PuMP oIL
1. Loosen pump dipstick/oil
plug (H).
. Place a container under
the oil drain plug (Y).
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
5.
DP70 pump oil. If DP70 is not available use 30W non-detergent
oil.
13
H
X
Y
14 oz. (414 ml) of