Westinghouse WPX3400 - Gas Pressure Washer Manual

INTRODUCTION

Operating, servicing, and maintaining this equipment can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, and wear gloves or wash your hands frequently when servicing this equipment. For more information go to www.P65warnings.ca.gov.

DISCLAIMERS

All information, illustrations, and specifications in this manual were in effect at the time of publishing.
The illustrations used in this manual are intended as representative reference views only. We reserve the right to make any specification or design change without notice.

ALL RIGHTS RESERVED

SPECIFICATIONS

SAFETY

SAFETY DEFINITIONS

SAFETY SYMBOLS

Follow all safety information contained in this manual and on the pressure washer.

Symbol	Description
	Safety Alert Symbol
	Electrocution Hazard
	Asphyxiation Hazard
	Burn Hazard. Do not touch hot surfaces.
	Electrical Shock Hazard
	Fire Hazard
	Maintain Safe Distance
	Injection Risk. Do not direct water stream at people or pets.
	Kickback. Hold spray gun securely
	Lifting Hazard
	Read Manufacturer's Instructions
	Wear eye and ear protection

CARBON MONOXIDE – using this product indoors CAN KILL YOU IN MINUTES. Operate this product outdoors only in a well ventilated area. DO NOT operate the product inside any building, including garages, basements, crawlspaces and sheds, enclosure, or compartment. DO NOT allow exhaust fumes to enter a confined area through windows, doors, vents, or other openings.

FUEL SAFETY

COMPONENTS

1. Spray Gun: Controls the application of water onto the surface with trigger. Includes trigger lock.
2. Gun Lance: Connects to end of spray gun and works with pressure nozzles included.
3. Thermal Relief Valve: When water reaches 125 warm water will discharge from pump onto ground to help prevent internal pump damage.
4. Recoil Handle: Pull to start engine.
5. Oil Dipstick/Filler Neck: Used to check/fill oil.
6. Air Filter
7. Pump: Generates high pressure.
8. Unloader Valve: Controls pressure output.
9. High Pressure Outlet: Connection for high pressure hose.
10. Water Inlet: Connection for garden hose.
11. Fuel Tank: Fill with regular unleaded fuel. Do not overfill.
12. High Pressure Hose

ASSEMBLY

CARTON CONTENTS

Weight hazard. Always have assistance when lifting the pressure washer.

1. Carefully open the carton.
2. Remove and save the carton contents.
3. Remove and discard the packing tray.
4. Unfold the top of the plastic bag enclosing the pressure washer.
5. Carefully cut the vertical corners of the carton.
6. Recycle or dispose of the packaging materials properly.

INSTALL HANDLE

Install the handle on the lower frame with the decal side facing the engine. Slide the handle downward until the spring buttons click into place through the holes in the handle.

INSTALL MOUNTING FOOT AND LOWER GUN HOLDER

Install the mounting foot and secure with the M8 Nut. Attach the lower gun holder with the M6 screw, washers, and nut.

INSTALL UPPER GUN HOLDER

From the front of the unit, remove top-right bolt, washers, and nut. Reinstall with the upper spray gun holder. From the rear of the unit, install the push rivet as shown.

INSERT SPRAY NOZZLES

Insert the colored nozzles into the corresponding holders on the top of the pressure washer.

ASSEMBLE SPRAY GUN AND HOSE

INITIAL OIL FILL

NOTICE
THIS UNIT HAS BEEN SHIPPED WITHOUT OIL. Do not attempt to crank or start engine before it has been properly serviced with recommended oil. Failure to add engine oil before starting will result in serious engine damage.
NOTICE Use of 2-stroke/cycle oil or other unapproved oil types can cause severe engine damage that is not covered under warranty.

The included, recommended oil type for typical use is 10W- 30 engine oil. If running the pressure washer in extreme temperatures, refer to the following chart.

1. On a level surface, remove the oil dipstick.
   Note: There is an oil dipstick/filler neck on both sides of the unit. Either can be used to check or add oil.
   
   
2. Using the supplied oil and funnel tip, add oil into oil filler neck.
   Note: As residual oil from the factory may remain in the engine, add the oil incrementally to prevent overfilling the engine. See Engine Oil Level Check in the Maintenance section.
3. Replace the oil dipstick and hand-tighten.

FUEL

CONNECT THE GARDEN HOSE

The water supply must come from a pressurized water spicket. NEVER use hot water or water from pools, lakes, etc. Before connecting the garden hose to the pressure washer:

1. Run water through the hose for 30 seconds to clean any debris from the hose.
2. Inspect the screen and gasket in the pump water inlet. If the screen or gasket is damaged, do not use the pressure washer until replaced.
3. If the screen is dirty, clean it before connecting the garden hose to the pump.
4. Completely uncoil the garden hose or remove completely from reel to prevent kinks.
   NOTICE
   There must be a minimum of 10 ft. (3 m) of unrestricted hose between the pressure washer intake and the hose faucet or shut off valve (such as a "Y" shut off connector).
5. With the hose faucet turned OFF, attach the end of the garden hose to the pump water inlet. Tighten by hand.
   NOTICE
   Do not run the pressure washer without the water supply connected and turned on, as this may damage the high pressure seals and decrease pump life. Completely unwind the hose from its reel or coil and make sure the hose is not being restricted by tires, rocks, or any other objects that may lessen or prevent water flow to the pressure washer
   

OPERATION

PRESSURE WASHER LOCATION

STARTING THE ENGINE

Always wear safety goggles or safety glasses with side shields, and as necessary a full face shield as well as full ear protection when operating this product.
NOTICE
Running the unit for more than one minute without spraying water causes heat to build up in the pump. In the event that the pump gets too hot, a thermal relief valve will open to release the hot water. Running the unit without spraying water can damage pump components and will void the warranty.

1. Turn the water supply ON.
2. Pull the trigger on the spray gun to purge all air from the pump and hose. This may take several minutes.
3. Do not start the engine until a steady stream of water is flowing from the nozzle.
4. Turn the engine switch to the ON position.
   

5. Turn the fuel valve to the ON position.
   
   
6. If the engine is cold, move the choke lever to the CHOKE position.
   
   
7. Pull the recoil handle slowly until resistance is felt and then pull rapidly.
   Note: If the engine starts briefly and then shuts off, squeeze the trigger on the spray gun to relieve the pressure before trying to start the engine again.
8. Once the engine starts, move the choke lever to the RUN position. Allow the engine to warm up slightly before use.
   

STOPPING THE PRESSURE WASHER

During normal operation, use the following steps to stop the pressure washer:

1. Engage the spray gun trigger lock in the safe position.
2. Move the engine OFF/ON switch to the OFF position.
   
   
3. Close the fuel valve.
   
   
4. Turn the water supply OFF.
5. Disengage the trigger lock and depress the trigger for 15 seconds to depressurize the system.

6. Disconnect the garden hose from the water inlet.
7. Complete all steps in the AFTER EACH USE section of this manual.

DURING AN EMERGENCY
If there is an emergency and the pressure washer must be stopped quickly, push the engine control switch to OFF position immediately.

The quick-connect coupler on the spray lance allows changing between nozzles while the pressure washer is running.

Always engage the trigger lock before changing a nozzle.
NOTICE
Only use the nozzles that were supplied with the pressure washers. Using any other nozzles can affect performance and may void the warranty. For replacement nozzles call (855) 944-3571.

NOZZLE SELECTION
	HIGH PRESSURE WASH				LOW PRESSURE WASH
	RED	YELLOW	GREEN	WHITE	SOAP
	0 o	15 o	25 o	40 o
Concrete, Brick, Masonry
Siding, Gutters, Home
Fencing, Deck, Patio
Lawn and Garden Equipment, Boats, RVs
Recommened nozzle Use with caution Do not use

The use of detergents can dramatically reduce cleaning time and assist in the removal of difficult stains. Many detergents are customized for pressure washer use for specific cleaning tasks. When spraying detergent, the detergent will be diluted 1:12. Approximately 621 ml (21 oz.) of detergent will be consumed from the tank for every minute sprayed.

NOTICE
Only use detergents designed for pressure washers. Pressure washer detergents are as thick as water. Using thicker detergents, like dish soap, will clog the chemical injection system. Do not use household detergents, acids, alkalines, bleaches, solvents, flammable material, or industrial grade solutions, which can damage the pump or cause property damage.

Prepare cleaning solution as instructed on the solution bottle. Always test in an inconspicuous area before beginning. You can effectively clean surfaces by combining the chemical action of detergents with high pressure rinses. On vertical surfaces, apply the detergent starting at the bottom and work your way upward. This method prevents the detergent from sliding down and causing streaks. Begin high pressure rinsing at the bottom and work your way upward. On particularly tough stains, use a brush in combination with detergents and high pressure rinsing.

1. Fill the detergent tank with cleaning solution.
2. Install the detergent nozzle (black) in the spray lance. Detergent will only be drawn through the pump when the black detergent nozzle is attached to the end of the spray lance.
3. Make sure the water supply is ON. Start the engine. Pull the trigger to spray the detergent solution.
   NOTICE
   NEVER use bleach in detergent tank. It will damage the pump and void the warranty.
4. Use long, even overlapping strokes to apply soap. Allow 3 – 5 minutes for the soap to soak in before rinsing. Do not allow the soap to dry on the surface before rinsing. Reapply soap if necessary to maintain a wet surface for the soap to soak in.

DETERGENT SYSTEM FLUSH
The detergent suction system can be flushed by removing the suction tube from the detergent tank and placing the tube in a fresh bucket of water. Only perform a system flush when the detergent tank is empty.

Disconnect the spark plug boot from the spark plug when performing maintenance on the pressure washer. Regular maintenance will improve performance and extend the service life of the pressure washer. Follow the hourly or calendar intervals, whichever occurs first. More frequent service is required when operating in adverse conditions as noted below.

* Recommend service to be performed by authorized Westinghouse service dealer.

DO NOT spray the pressure washer with water. Water can contaminate the fuel system and can enter the engine through the cooling slots and damage the engine.

1. Use a damp cloth to clean exterior surfaces of the pressure washer.
2. Use a soft bristle brush to remove dirt and oil.
3. Use an air compressor (25 PSI) to clear dirt and debris from the pressure washer.

4. Inspect all air vents and cooling slots to ensure that they are clean and unobstructed.

CLEANING SPRAY NOZZLES
Detach the nozzle from the spray lance. Use the included nozzle cleaning tool to loosen any particles in the nozzle. Flush with water.

Fire hazard. Never use gasoline or other flammable solvents to clean the air filter. The air filter must be cleaned after every 50 hours of use or six months (frequency should be increased if the pressure washer is operated in a dusty environment).

1. Place the pressure washer on a level surface and allow the engine to cool for several minutes.
2. Use your fingers to unscrew the thumb screw on top of the air filter assembly. Remove the wing nut, then remove the air filter.
   
   
3. Use compressed air to clean the air filter from the inside out.
   Note: The outer foam air filter element is not intended to be removed. If torn, replace the air filter.

Avoid skin contact with engine oil. Wear protective clothing and equipment. Wash all exposed skin with soap and water.
NOTICE
Always use the specified engine oil. Failure to use the specified engine oil can cause accelerated wear and/or shorten the life of the engine.

When using the pressure washer under extreme, dirty, dusty conditions or in extremely hot weather, change the oil more frequently.
Ambient air temperature will affect engine oil performance. Change the type of engine oil used based on weather conditions.

Check the engine oil level before each use.

1. Place the pressure washer on a level surface and allow the engine to cool for several minutes.
2. With a damp rag, clean around the oil dipstick.
   Note: There is an oil dipstick/filler neck on both sides of the unit. Either can be used to check or add oil.
3. Remove the oil dipstick and wipe the dipstick clean.
   

When using the pressure washer under extreme, dirty, dusty conditions or in extremely hot weather, change the oil more frequently. Change the oil while the engine is still warm from operation.

1. Place the pressure washer on a level surface and allow the engine to cool for several minutes.
2. With a damp rag, clean around the oil dipstick. Remove the dipstick and wipe clean.
3. Place an oil pan (or suitable container) under the oil drain bolt.
4. Using a 10mm wrench, remove the oil drain bolt and allow the oil the to drain.
   
   

5. Install the oil drain bolt and tighten securely.
6. Slowly pour oil into the oil filler neck until oil the level is between the L and H marks on the dipstick. Stop frequently to check the oil level. DO NOT overfill.
   Maximum oil capacity: 20 Oz. (0.6 Liter)
7. Install the oil dipstick and hand-tighten.

NOTICE
Do not pollute. Follow the guidelines of the EPA or other governmental agencies for proper disposal of hazardous materials. Consult local authorities or reclamation facility.

6. Measure the spark plug electrode gap with a wire-type feeler gauge. If necessary, correct the gap by carefully bending the side electrode.
   Spark plug gap: 0.024 – 0.032 in. (0.60 – 0.80 mm)
   
   

7. Carefully install the spark plug finger tight, then tighten as additional 3/8 to 1/2 turn with the spark plug wrench.
8. Attach the spark plug boot.

Proper storage preparation is required for trouble-free operation and pressure washer longevity.

NOTICE
Gasoline stored for as little as 30 days can deteriorate, causing gum, varnish, and corrosive buildup in fuel lines, fuel passages, and the engine. This corrosive buildup restricts the flow of fuel, which can prevent the engine from starting after a prolonged storage period. The use of fuel stabilizer significantly increases the storage life of gasoline. Full-time use of fuel stabilizer is recommended. Follow the manufacturer's instructions for use.

Never store a pressure washer with fuel in the tank indoors or in a poorly ventilated area where the fumes can come in contact with an ignition source such as a pilot light of a stove, water heater, clothes dryer, or any other gas appliance, or a spark from an electric appliance.

STORED FOR LESS THAN 30 DAYS

• Allow the pressure washer to cool a minimum of 30 minutes before storage.
• Wipe the pressure washer with a moist cloth. Clean any debris from the muffler cooling vents.
• Store the pressure washer in a well-ventilated, clean, dry location away from sparks, open flames, pilot lights, heat, and other sources of ignition such as areas with a spark-producing electric motor or where power tools are operated. Store in an area out of direct sunlight.
• Do not store the pressure washer or gasoline near furnaces, water heaters, or any other appliances that produce heat or have automatic ignitions.

STORED FOR OVER 30 DAYS
Even properly stabilized fuel can leave residue and cause corrosion if left long term. If storing the pressure washer for two to six months, drain the float bowl to prevent gum and varnish buildup in the carburetor.

Make sure the pressure washer hose is free of all water before storing for winter. In order to prevent corrosion and keep the water pump from freezing you will need to add RV (non-toxic) antifreeze or similar pump-protection specifically made for pressure washers. Follow the manufacturer's instructions for use.

DRAINING THE FLOAT BOWL

1. Turn the fuel tank valve to the OFF position.
2. Locate the drain screw on the bottom of the carburetor float bowl.
   
   
3. Place an appropriate gasoline container under the drain screw to catch the drained fuel.
4. Loosen the float bowl drain screw and allow the fuel to drain. Tighten the float bowl drain screw.

DRAINING THE FUEL TANK
If storing the pressure washer for longer than six months, drain the fuel tank to prevent fuel separation, deterioration, and deposits in the fuel system.

1. Drain the float bowl.
2. Unscrew the fuel tank cap. Remove the fuel screen filter by slightly compressing it while removing it from the tank.
3. Using a commercially available gasoline hand pump (not included), siphon the gasoline from the fuel tank into an approved gasoline container. DO NOT use an electric pump.
4. Reinstall the fuel screen filter and the fuel tank cap.
5. Push the battery switch to the OFF position.
6. Disconnect the battery quick-connect plugs.
7. Remove the spark plug.

8. Put a teaspoon of engine oil into the cylinder and pull the recoil handle until resistance is felt. At this position the piston is coming up on its compression stroke and both valves are closed. Storing the engine in this position will help prevent internal corrosion. Return the recoil handle gently.
9. Reinstall the spark plug. Leave the spark plug boot disconnected to prevent accidental starting.