Wen PW21 Manual Download Page 9

5. Attach the desired nozzle onto the spray lance (see “Using Spray Nozzle”).

6. Point the gun at a safe direction, aimed away from any bystanders or ani-
mals. Turn the power switch to ON and pull the trigger to begin pressure 
washing (Fig. 8). 

IMPORTANT:

The pressure washer is equipped with a Total Stop System (TSS) that senses 
water flow in the pump. When the trigger is released and no water is flowing 
through the pump, the motor will automatically shut off to protect the pump 
from overheating, thus saving energy and prolonging pump life. When the pow-
er switch is in the ON position, engage the trigger to start the pump.

WARNING:

 Beware of kickback when pressing the trigger!

OPERATION

9

USING PRESSURE WASHER DETERGENT

1. The onboard detergent tank is located on the back of the pressure washer. Open the rubber cap and fill the res-
ervoir with your preferred pressure washer detergent. The soap tank capacity is 40.6 fl. oz. (0.32 gallons).

CAUTION: Use only detergents designed for pressure washers. Use of other detergents or solvents could damage 
the pressure washer. Follow the instructions included with your detergent about how it should be prepared and 
used.

PREPARING AND RUNNING THE PRESSURE WASHER

1. Make sure that the washer is standing on a secure, stable surface to prevent it from tipping during operation. 

2. Check that all connections are secure: 
    • The water supply hose is properly fastened to the pressure washer’s water inlet adapter.
    • The high pressure hose is properly fastened to the hose connector on the trigger gun.
    • The spray lance is properly attached to the trigger gun.

3. Turn on the water to its maximum flow. 

4. Release the trigger safety lock and pull the trigger for a few seconds until water flow is steady. This will allow air 
to escape and discharge any pre-existing pressure from the gun and the hose. Then turn off the water. 

Fig. 8

Fig. 9

2. Only use the black soap nozzle when applying detergent. 

3. Control the amount of soap dispensed by turning the detergent adjustment 
switch (Fig. 9).

4. To drain detergent from the unit, take out the detergent tank and dump the 
contents out. Afterwards, spray the gun to flush out all of the soap remaining 
in the unit.

THERMAL SENSOR 

The pressure washer is equipped with a thermal sensor that protects the motor from overloading. When overload-
ed, the machine will shut down and restart after a few minutes once the motor has cooled down.

Summary of Contents for PW21

Page 1: ...free performance Pay close attention to the rules for safe operation warnings and cautions If you use your tool properly and for intended purpose you will enjoy years of safe reliable service IMPORTAN...

Page 2: ...ce Storage Troubleshooting Exploded View and Parts List Warranty Statement TECHNICAL DATA Model Number Motor Rated Pressure Max Pressure Max Flow Rate Rated Water Temperature Max Inlet Pressure Hose L...

Page 3: ...wn and embarrassing yourself in front of your cool neighbor Greg Hold the handles firmly to avoid injury When stepping backwards be cautious about any obstacles beneath your feet or behind you in orde...

Page 4: ...ways wear safety goggles to protect from possible mishaps with the stream or detergents Always be aware of the dangers associated with the detergents and chemicals that you are working with 7 Attach a...

Page 5: ...instead of grounding No grounding means is provided on a double insulated product nor should a means for grounding be added to the product Servicing a double insulated product requires extreme care a...

Page 6: ...er 1 2 3 4 5 6 7 8 Trigger Gun Trigger with Safety Lock High Pressure Hose Connector Gun Holder Spray Lance Quick Connect Collar Gun Stock Handle 1 2 8 3 9 4 10 5 11 6 12 15 7 13 16 14 9 10 11 12 13 1...

Page 7: ...to flush out any debris WARNING The intake water temperature must not exceed 104 F 40 C The water supply must not exceed 101 PSI 700 kPa CAUTION Only use clean water for the pressure washer Use of unf...

Page 8: ...ellow for tough jobs like stripping paint removing oil stains grease or rust 0 nozzle red for powerful spot cleaning or hard to reach areas Use extreme caution when using this nozzle Soap nozzle black...

Page 9: ...with your detergent about how it should be prepared and used PREPARING AND RUNNING THE PRESSURE WASHER 1 Make sure that the washer is standing on a secure stable surface to prevent it from tipping dur...

Page 10: ...y use to prevent nozzles from clogging and ensure good performance of the machine 1 Release the trigger shut off the unit unplug the power plug and turn off the water 2 Remove the nozzle from the spra...

Page 11: ...unit to check the switch wiring and replace if necessary Fluctuating Pressure 1 Pump bringing in air 2 Dirty or broken valves 3 Pump seals are worn out 1 Tighten the hose connections and make sure th...

Page 12: ...12 EXPLODED VIEW AND PARTS LIST 83 84...

Page 13: ...W21 040 Three Way Valve Sheath 1 41 PW21 041 U Pin 2 42 PW21 042 Rubber Mat 1 43 PW21 043 O Ring11 2X2 65 80Hs Rohs 2 No Part No Description Qty 44 PW21 044 Three Way Valve 1 45 PW21 045 O Ring7 5X2 8...

Page 14: ...EXPLODED VIEW AND PARTS LIST PUMP 14...

Page 15: ...linder Head 1 15 PW21 115 Screw 1 16 PW21 116 O Ring 1 17 PW21 117 Inner Hexagon Screw 4 18 PW21 118 Elastic Washer 4 19 PW21 119 Washer 4 20 PW21 120 Y Ring 3 21 PW21 121 Inlet Valve Kit 3 22 PW21 12...

Page 16: ...prod uct must be shipped in its original container or an equivalent properly packed to withstand the hazards of ship ment The product must be fully insured with a copy of the warranty card and or the...

Reviews: