DeWALT A16505 User Manual

• NEvER turn water supply off while pressure washer engine is

running or damage to pump will result.

• DO NOT stop spraying water for more than two

minutes at a time. Pump operates in bypass

mode when spray gun trigger is not pressed.

When the temperature inside the pump rises

too high the thermal relief valve (T) will open

and release a gush of water in an effort to lower

the temperature inside the pump. The thermal

relief valve will then close. If pump is left in bypass mode for

more than two minutes internal components of the pump can

be damaged.

start-uP ProceDure
1. In a well-ventilated outdoor area, add fresh, high-quality, unleaded

gasoline with a pump octane rating of 86 or higher. Do not overfill.

Wipe up spilled fuel before starting the engine. Refer to engine

instruction manual for correct procedure.

. Check engine oil level. Refer to the engine instruction manual for

correct procedure.

3. Connect the water hose to the water source. Turn the water source

on to remove all air from the hose. When a steady stream of water

is present, turn the water source off.

4. Verify the filter screen (U) is in water inlet of

pump. The cone side faces out.

5. Connect the cold water source (V) to pump

inlet.

note: Water source must provide a minimum

of 5 gallons per minute at 0 PSI.

WARNING: To reduce the possibility of con-

tamination always protect against backflow when connected to a

potable water system.

6. Connect high-pressure hose (C) to pump

outlet.

7. If applying a chemical or cleaning solution,

refer to

chemicals and cleaning

solvents.

8. Turn the water source on.
cAutIoN: Risk of property damage. Failure

to do so could cause damage to the pump.
9. Remove all air from the pump and high pressure hose by depress-

ing trigger until a steady stream of water is present.

10. Start engine. Refer to the engine instruction manual for correct

procedure.

WARNING: Risk of unsafe operation. If engine does not start

after two pulls, squeeze trigger of gun to relieve pump pressure. Pull

starter cord slowly until resistance is felt. Then pull cord rapidly to

avoid kickback and prevent hand or arm injury.
11. Depress trigger on gun to start water flow.

WARNING: Risk of unsafe operation. Stand on a stable

surface and grip gun/wand firmly with both hands. Expect the gun to

kickback when triggered.
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.