refer to Chemicals and Cleaning

Solvents.WARNING: To reduce the possibility of contamination always pro- tect against backflow when connected to a potable water system.

6.

Connect high-pressure hose (C) to pump

C

 

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

X

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.

Shutting DownWARNING: 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.

MAINTENANCEWARNING: Risk of unsafe operation. Stand on a stable surface and grip gun/wand firmly with both hands. Expect the gun to kickback when triggered.

12. Release trigger to stop water flow.

DANGER: Risk of injury from spray. Engage the

Y

trigger lock (Y) 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.

2.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

Manual backgroundWARNING: 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.

Manual backgroundWARNING: 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 temperatures or dusty conditions, more frequent maintenance checks will be required.

English

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DeWalt DP3900, GX390, A20832 Maintenance, Shutting Down, refer to Chemicals and Cleaning, Solvents, English