Westinghouse WGen20000c - Portable Generator 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.

Read this manual before using or performing maintenance on this product. Failure to follow the instructions and safety precautions in this manual can result in serious injury or death.

UPDATES
The latest User Manual for your Westinghouse products can be found under our support tab. https://westinghouseoutdoorpower.com/pages/manuals

Or scan the following QR code with your smartphone camera to be directed to the link.

PRODUCT REGISTRATION

For trouble-free warranty coverage, it is important to register your Westinghouse product. You can register by:

• Completing and mailing the product registration card included in the carton.
• Registering your product on-line at: https://westinghouseoutdoorpower.com/pages/warranty-registration
• Scanning the QR code with your smartphone camera to be directed to the mobile registration link.
  
• Sending the following product information to:
  Westinghouse Outdoor Power
  Warranty registration
  777 Manor Park Drive
  Columbus, OH 43228

Keep your purchase receipt for trouble-free warranty coverage.

SPECIFICATIONS

This product is designed and rated

*Ethanol content of 10% or less. DO NOT use E15 or E85.

NOTICE
This product is designed and rated for continuous operation at ambient temperatures up to 104°F (40°C). If needed, this product can be operated at temperatures ranging from 5°F (–15°C) to 122°F (50°C) for short periods. If the product is exposed to temperatures outside of this range during storage, it should be brought back within this range before operation. This product must always be operated outdoors in a well- ventilated area and far away from doors, windows, and other vents.

Maximum wattage and current are subject to and limited by such factors as fuel BTU content, ambient temperature, altitude, engine conditions, etc. Maximum power decreases about 3.5% for each 1,000 feet above sea level, and will also decrease about 1% for each 10°F (6°C) above 60°F (16°C) ambient temperature.

NOTICE
Even with a carburetor modification, engine horsepower will decrease about 3.5% for each 609.6 meter (2,000 foot) increase in altitude. The effect of altitude on horsepower will be greater if no carburetor modification is made. A decrease in engine horsepower will decrease the power output of the generator. Contact our service team to order altitude kits.

NOTICE
Thank you for choosing Westinghouse! PLEASE READ BEFORE RETURNING THIS PRODUCT FOR ANY REASON.

If you have a question or experience a problem with your Westinghouse purchase, call us at 1-855-944-3571 to speak with an agent.

SAVE THIS MANUAL FOR FUTURE REFERENCE.

HAVE QUESTIONS?
Email us at service@wpowereq.com or call 1-855-944-3571

SAFETY DEFINITIONS

The words DANGER, WARNING, CAUTION, and NOTICE are used throughout this manual to highlight important information. Make sure that the meanings of this safety information is known to all who operate, perform maintenance on, or are near the generator.

This safety alert symbol appears with most safety statements. It means attention, become alert, your safety is involved! Please read and abide by the message that follows the safety alerts symbol.

Indicates a hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE

Indicates a situation which can cause damage to the generator, personal property, and/or the environment, or cause the equipment to operate improperly.

Note: Indicates a procedure, practice or condition that should be followed for the generator to function in the manner intended.

SAFETY SYMBOLS

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

Symbol	Description
	Safety Alert Symbol
	Electrocution Hazard
	Asphyxiation Hazard
	Burn Hazard. DO NOT touch hot surfaces.
	Electrical Shock Hazard
	Fire Hazard
	Maintain Safe Distance
	Lifting Hazard
	Read Manufacturer's Instructions
	DO NOT Operate in Wet Conditions

SAFETY INSTRUCTIONS

CORRECT USE
Example location to reduce risk of carbon monoxide poisoning ONLY use outside and downwind, far away from windows, doors and vents. Direct exhaust away from occupied spaces

INCORRECT USE
Do not operate in any of the following locations: Near any door, window, or vent

• Garage
• Basement
• Crawl Space
• Living Area
• Attic
• Entry Way
• Porch
• Mudroom
  

NOTICE
Install battery-powered carbon monoxide detectors or plug-in carbon monoxide detectors with battery back-up in living areas.

GENERAL SAFETY PRECAUTIONS

• NEVER use the generator to power medical support equipment.
• DO NOT operate the generator when you are tired or under the influence of drugs, alcohol, or medication.
• DO NOT use generator with electrical cords which are worn, frayed, bare, or otherwise damaged.
• All electrical tools and appliances operated from this generator must be properly grounded by use of a third wire or be double-insulated.
• When this generator is used to supply a building wiring system the generator must be installed by a qualified electrician and connected to a transfer switch as a separately derived system in accordance with NFPA 70, National Electrical Code.
• If you begin to feel sick, dizzy, or weak while using the generator, move to fresh air IMMEDIATELY. See a doctor, as you can have carbon monoxide poisoning.
• Only use OUTSIDE and far away from windows, doors, and vents as recommended by the US Department of Health and Human Services Centers for Disease Control and Prevention. Your specific home and/or wind conditions may require additional distance.
• While operating and storing, keep at least five feet of clearance on all sides of the generator, including overhead. Allow the generator to cool a minimum of 30 minutes before storage. Heat created by the muffler and exhaust gases could be hot enough to cause serious burns and/or ignite combustible objects.
• DO NOT touch the muffler or engine. They are very HOT and will cause severe burns. DO NOT put body parts or any flammable or combustible materials in the direct path of the exhaust.
• ALWAYS remove any tools or other service equipment used during maintenance away from the generator before operating.
• Avoid skin contact with engine oil or gasoline. Wear protective clothing and equipment. Wash all exposed skin with soap and water.

FUEL SAFETY

• Store fuel in a container approved for gasoline.
• DO NOT smoke when filling the generator with gasoline.
• DO NOT allow the generator's gas tank to overflow when filling.
• Shut down the engine and allow it to cool for two minutes before adding gasoline or oil to the generator.
• NEVER remove the fuel cap when the generator is running. Shut off the engine and allow the unit to cool at least two minutes. Remove the fuel cap slowly to release pressure, keep fuel from escaping around the cap, and to avoid the heat from the muffler igniting fuel vapors. Tighten the fuel cap securely after refueling.
• Wipe spilled fuel from the unit.
• NEVER attempt to burn off spilled fuel.
• NEVER overfill the fuel tank. Leave room for fuel to expand. Overfilling the fuel tank can result in a sudden overflow of gasoline and result in spilled gasoline coming in contact with HOT surfaces.
• Spilled fuel can ignite. If fuel is spilled on the generator, wipe up any spills immediately. Dispose of rag properly. Allow area of spilled fuel to dry before operating the generator.
• Wear eye protection while refueling.
• NEVER use gasoline as a cleaning agent.
• Store any containers containing gasoline or LPG/ propane in a well-ventilated area, away from any combustibles or source of ignition.

GASOLINE AND GASOLINE VAPOR (GAS)

Fire and explosion hazard. Gasoline and LPG/propane are highly explosive and flammable and can cause severe burns or death.

• In case of a gas fire,DO NOT attempt to extinguish the flame if the fuel tank valve is in the ON position. Introducing an extinguisher to a generator with an open fuel valve could create an explosion hazard.
• Gas has a distinctive odor, this will help detect potential leaks quickly.
• Gas vapors can cause a fire if ignited.
• Gasoline is a skin irritant and needs to be cleaned up immediately if it comes in contact with the skin.

CO SENSOR

The CO Sensor monitors for the accumulation of poisonous carbon monoxide gas around the generator when the engine is running. If increasing levels of CO gas are detected, the CO Sensor automatically shuts down the engine.

The CO Sensor will also detect the accumulation of carbon monoxide from other fuel burning sources used in the area of operation. For example, if the exhaust of fuel burning tools is pointed at a CO Sensor-equipped generator, a shut-off may be initiated due to rising CO levels. This is not an error. Hazardous carbon monoxide has been detected. Move and redirect any additional fuel burning sources to dissipate carbon monoxide away from personnel and occupied buildings.

Note: Remote start-equipped generators must be restarted with the START/STOP button on the control panel after an automatic shut-down occurs.

Generators are intended to be used outdoors, far from occupied buildings and the exhaust pointed away from personnel and buildings. If misused and operated in a location that results in the accumulation of CO, like in a partially enclosed area, the CO Sensor shuts off the engine, notifies the user with a RED indicator light, and directs the user to read the Action Label for steps to take. The CO Sensor DOES NOT replace carbon monoxide alarms. Install battery-powered carbon monoxide alarm(s) in your home.

Automatic shutoff accompanied with a flashing RED light in the CO Sensor portion of the control panel is an indication that the generator was improperly located. If you start to feel sick, dizzy, weak, or carbon monoxide detectors in your home indicate an alarm, get to fresh air immediately. Call emergency services. You may have carbon monoxide poisoning.

ACTION LABEL

CONTROL PANEL CO AUTO-SHUTOFF

CO SENSOR INDICATOR LIGHTS

GENERATOR COMPONENTS

1. Data Center: Displays voltage, frequency, total hour meter, and run/maintenance timer.
2. Low Idle: Low Idle minimizes fuel consumption, noise, and engine wear by lowering the engine RPM during intermittent use. See LOW IDLE section for important use considerations.
3. Main Circuit Breaker: The 83 amp main circuit breaker controls total output of all outlets to protect the generator from overload or short circuit.
4. 120-Volt AC, 20-Amp NEMA 5-20R GFCI Receptacles: Each receptacle is capable of carrying a maximum of 20 amps on a single receptacle or a combination of both receptacles.
5. 20 Amp AC Circuit Breakers: Circuit breakers limits the current that can be delivered through each NEMA 5-20R receptacle to 20 amps.
6. 120/240-Volt AC, 30-Amp NEMA L14-30R Receptacles: Receptacles can supply either 120V or 240V up to 30 amps.
7. Ground Terminal: The ground terminal is used to externally ground the generator.
8. 120-Volt AC, 30-Amp NEMA L5-30R Receptacle: Receptacle can supply a maximum of 30 amps.
9. 120/240-Volt AC, 50-Amp NEMA 14-50R Receptacle: Receptacle can supply either 120V or 240V up to 50 amps.

ELECTRIC START COMPONENTS

1. Battery Indicator: Indicates that power is ON. Light will remain illuminated while the unit is ON.
2. Battery Switch: Turns battery ON and OFF. Must be ON before electric or remote start.
3. Push-Button START/STOP: Push once to automatically start the engine. Push again to stop the engine.
4. Smart Switch Outlet: Connects the Westinghouse ST Switch (sold separately) to the control panel.
5. Battery Charging Port: Used to charge the battery with the included battery charger.
6. CO Sensor indicator lights: The CO Sensor monitors for the accumulation of poisonous carbon monoxide gas. If increasing levels of CO gas are detected, the CO Sensor automatically shuts down the engine.

DATA CENTER

Use the Mode button on the Data Center to switch between displays.

Voltage: Displays current voltage output.

Frequency (Hz): Displays power output frequency in Hertz.

Lifetime Hours: Displays the lifetime run hours.

Run Time/Maintenance: Displays current run time. Resets to zero when shut down. Maintenance reminder displayed when required.

MAINTENANCE REMINDERS

Maintenance reminder codes will be shown on the Data Display based on unit lifetime hours. The maintenance codes will be displayed until the unit is turned off. Refer to the Maintenance section for specific procedures.

Weight hazard. ALWAYS have assistance when lifting the generator.

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 generator.
5. Carefully cut the vertical corners of the carton to access the generator.
6. Recycle or dispose of the packaging materials properly.

CARTON CONTENTS

• User Manual
• Quick Start Guide
• Bottle of SAE 10W-30 Oil
• Spark plug socket wrench
• Oil Funnel
• Assembly wrench
• Wheel and lifting hook components

If any parts are missing, contact our service team at service@wpowereq.com or call 1-855-944-3571.

INSTALL WHEELS AND LIFTING BRACKET

NOTICE

Assembling the generator will require lifting the unit on one side. Install the wheels before adding fuel or oil.

Lifting hazard. Use two people when installing the wheels. Refer to LIFTING HOOK in the OPERATION section.

1. Place generator on a flat surface.
2. Align the lifting hook bracket with the mounting brackets on the top of the fuel tank. Secure with four M8 flange bolts.
   
3. Use the Lifting Hook to raise the unit enough to install the wheels as shown.
   

Note: The wheels are only intended for hand transport. The wheels are not suitable for towing the generator either on or off-road.

INITIAL OIL FILL

NOTICE

THIS GENERATOR 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 generator in extreme temperatures, refer to the following chart.

1. On a level surface, remove the oil fill cap.
   
2. Using the supplied funnel and oil, add the oil into the engine.
3. Replace the oil fill cap and tighten securely.

BATTERY INSTALLATION

Battery posts, terminals contain lead and lead compounds. Wash hands after handling.

The battery gives off explosive hydrogen gas during normal operation. A spark or flame can cause the battery to explode with enough force to kill or seriously hurt you. Wear protective clothing and a face shield, or have a skilled technician perform battery maintenance.

Burn hazard. The battery contains sulfuric acid (electrolyte) which is highly corrosive and poisonous. Wear protective clothing and eye protection when working near the battery. Keep children away from the battery.

NEVER smoke or work near sparks or other sources of ignition. NEVER touch both battery terminals at the same time with your hand or any non-insulated tools. If battery acid contacts skin or clothing, flush immediately with water and neutralize with baking soda.

The battery shipped with the generator has been fully charged. A battery may lose some charge when not in use for prolonged periods of time. Once started, the generator will charge the battery after 30–60 minutes of use.

NOTICE

ALWAYS connect the cables in the following sequence to avoid possible shock.

1. Connect the positive (+) battery cable (red boot) to the positive (+) battery post. Tighten the bolt securely. Secure the boot over the battery post.
   
2. Connect the negative (-) cable (black boot) to the negative (-) battery post. Tighten the bolt securely. Secure the boot over the battery post.

FUEL

Fire and explosion hazard. NEVER use a gasoline container, gasoline tank, propane connector hose, propane tanks, or any other fuel item that is broken, cut, torn or damaged.

Fire and explosion hazard. DO NOT overfill fuel tank. Fill only to the red fill ring located in the in-tank fuel screen filter. Overfilling may cause fuel to spill onto engine causing a fire or explosion hazard.

Fire and explosion hazard. NEVER refuel the generator while the engine is running. ALWAYS turn the engine off and allow the generator to cool for two minutes before refueling.

NOTICE

DO NOT use E15 or E85 fuel in this product. Engine or equipment damage caused by stale fuel or the use of unapproved fuels (such as E15 or E85 ethanol blends) is not covered by warranty. Only use unleaded gasoline containing up to 10% ethanol.

FUEL REQUIREMENTS

• CLEAN, FRESH, unleaded gasoline, 87–93 octane.
• Up to 10% ethanol (gasohol) is acceptable (where available; non-ethanol fuel is recommended).
• DO NOT use E85 or E15.
• DO NOT use a gas oil mix.
• DO NOT modify the engine to run on alternate fuels.
• DO NOT fuel indoors.
• DO NOT create a spark or flame while fueling.

USING FUEL STABILIZER

Adding a fuel stabilizer (not included) extends the usable life of fuel and helps prevent deposits from forming that can clog the fuel system. Follow the manufacturer's instructions for use.

ALWAYS mix the correct amount of fuel stabilizer to gasoline in an approved gasoline container before fueling the generator. Run the generator for five minutes to allow the stabilizer to treat the entire fuel system.

FILLING THE FUEL TANK

1. Turn the generator OFF and allow to cool for a minimum of two minutes before fueling.
2. Place the generator on level ground in a well ventilated area.
3. Clean area around fuel cap and remove the cap slowly.

NOTICE

Only fill the tank from an approved gasoline container. Make sure the gasoline container is internally clean and in good condition to prevent fuel system contamination.

4. Slowly add the recommended fuel. DO NOT overfill. Fill only to the red maximum fill ring on the fuel screen filter visible in the filler neck.
   
5. Install the fuel cap.

NOTICE

Fuel can damage paint and plastic. Use caution when filling the fuel tank. Damage caused by spilled fuel is not covered under warranty.

NOTICE

Clean the fuel screen filter of debris before and after each fueling. Remove the fuel screen filter by slightly compressing it while removing it from the fuel tank.

GENERATOR LOCATION

Read and understand all safety information before starting the generator.

NEVER operate the generator inside any building, including garages, basements, crawlspaces, sheds, enclosure, or compartment, including the generator compartment of a recreational vehicle.

Electrocution hazard. NEVER use the generator in a location that is wet or damp. NEVER expose the generator to rain, snow, water spray, or standing water while in use. Protect the generator from all hazardous weather conditions. Moisture or ice can cause a short circuit or other malfunction in the electrical circuit. Using a generator or electrical appliance in wet conditions, such as rain or snow, or near a pool or sprinkler system, or when your hands are wet, could result in electrocution

Fire hazard. Only operate the generator on a solid, level surface. Operating the generator on a surface with loose material such as sand or grass clippings can cause debris to be ingested by the generator that could block cooling vents or the air intake system. Allow the generator to cool for 30 minutes before transport or storage.

The generator should be on a flat, level surface at all times (Even while not in operation). The generator must have at least 5 ft. (1.5 m) of clearance from all combustible material.

DO NOT operate the generator in the back of a SUV, camper, trailer, truck bed (regular, flat, or otherwise), under stairs, next to walls or buildings, or in any other location that will not allow for adequate cooling of the generator and/or the muffler. DO NOT contain generators during operation.

Asphyxiation hazard. Place the generator in a wellventilated area. DO NOT place the generator near vents or intakes where exhaust fumes could be drawn into occupied or confined spaces. Carefully consider wind and air currents when positioning the generator.

GROUNDING

Shock hazard. Failure to properly ground the generator can result in electric shock.

NOTICE

Only use grounded 3-prong extension cords, tools, and appliances, or double-insulated tools and appliances.

The generator neutral is bonded to the frame. There is a permanent conductor between the generator (stator wire) and the frame. If this generator will be used only with cord and plug equipment connected to the receptacles mounted on the generator, National Electric Code does not require that the unit be grounded. However, other methods of using the generator may require grounding to reduce the risk of shock or electrocution.

Before using the ground terminal, consult a qualified electrician, electrical inspector, or local agency having jurisdiction for local codes or ordinances that apply to the intended use of the generator.

DISCONNECTING THE BONDED NEUTRAL
The bonded neutral should only be removed under specific circumstances. Consult a qualified electrician to determine if circumstances require disconnecting the bonded neutral.

1. Remove the alternator cover.
2. Remove the white bonded jumper wire from the ground bolt and unmarked terminal connection. Reinstall the bolts and tighten securely.
   
3. Keep the bonded jumper wire in a secure location so that the generator can be returned to the original configuration.

HIGH ALTITUDE OPERATION

Engine power is reduced the higher you operate above sea level. Output will be reduced approximately 3.5% for every 1000 feet of increased altitude from sea level.

High altitude adjustment is required for operation at altitudes over 2000 ft. (762 m). Operation without this adjustment will cause decreased performance, increased fuel consumption, and increased emissions.

NOTICE
DO NOT operate the generator at altitudes below 2,000 ft. (762 m) with the high altitude kit installed. Engine damage may occur.
High Altitude Carburetor Kit	Part# 518962-02

BREAK-IN PERIOD

For proper break-in, DO NOT exceed 50% of the rated running watts (10,000 watts) during the first five hours of operation.

Vary the load occasionally to allow stator windings to heat and cool and help seat the piston rings.

LOW IDLE

NOTICE

ALWAYS start the generator with Low Idle OFF. Allow the engine speed to stabilize before switching Low Idle ON.

NOTICE

Frequency output of the generator is dependent on engine speed. DO NOT use Low Idle when powering sensitive electronics or large surge loads, such as an air conditioner, electric pump, refrigerator, or when connected to a home transfer switch.

Low Idle minimizes fuel consumption, noise, and engine wear by lowering the engine RPM to idle (2400 RPM) when electrical loads have been turned off and automatically returns to rated speed when loads are turned back on.

Turn Low Idle ON when powering intermittent, nonelectronic loads, such as power tools at a construction site.

BEFORE STARTING THE GENERATOR

Verify that:

• The generator is placed in an safe, appropriate location.
• The generator is on a dry, flat, and level surface.
• The engine is filled with oil.
• All loads are disconnected.

Fire and explosion hazard. DO NOT move or tip the generator during operation.

REMOTE START

Verify that the area around the generator is clear before remote starting the generator.

The remote start key fob included with the generator should be attached to the recoil handle or control panel. If your unit was shipped without a key fob, contact Westinghouse customer service.

The generator can be started remotely from up to 99 feet (30 meter) using the remote start key fob.

Note: As the batteries in the remote start key fob drain, operational distance will decrease.

PAIRING THE REMOTE START

Remote replacement batteries: (2) CR2016

Remote replacement: Part# 100714A

If the remote start key fob is replaced or needs re-paired to the generator, follow this procedure.

1. Turn the generator battery switch to the ON position. The power indicator light will illuminate.
   
2. Push and hold the red Pairing button on the side of the control panel until the START/STOP button illuminates.
   
3. Push and hold the STOP button on the key fob until the START/STOP button illumination turns OFF. Release the button. The START/STOP button will illuminate after the button is released.
   
4. Push and hold the START button on the key fob until the START/STOP button illumination turns OFF. Release the button. The START/STOP button will illuminate after the button is released.
5. Push the Pairing button on the side of the control panel until the START/STOP button illumination turns OFF. Release the button.
6. Turn the generator battery switch to the OFF position. The remote is now paired.

STARTING THE ENGINE

Fire and explosion hazard. DO NOT add gasoline to the fuel tank while the generator is in operation.

During Push-Button or Remote Start the engine will automatically set the choke and begin the start sequence. If the engine fails to start, the generator will attempt to start the engine two more times. The battery switch can be turned off at any time during the automatic start sequence to abort the engine start attempt.

If the cranking speed drops after each unsuccessful attempt, then the battery may not be adequately charged. See BATTERY MAINTENANCE section.

1. Verify that fuel is in the gas tank.
2. Turn the fuel selector switch to gasoline operation.
3. Turn the fuel valve to the ON position.
   
4. Push the battery switch to the ON position.
5. Choose the starting method:
   1. Remote Start: Push and hold the START button on the remote start key fob for one second. Note: Remote start-equipped generators must be restarted with the START/STOP switch on the control panel after an automatic shut-down occurs.
   2. Push-Button Start: Push and hold the engine START/STOP button for two seconds.

STOPPING THE ENGINE

1. Turn off and unplug all connected electrical loads.
2. Let the generator run with no load for several minutes to stabilize internal temperatures of the engine.
3. Turn the engine start switch to the OFF position.

Note: Alternately, if the generator is used infrequently, turn the fuel valve to the OFF position to limit the residual fuel remaining in the system. The engine will stop when fuel in the carburetor and fuel line is exhausted.

FREQUENCY OF USE

If the generator will be used on an infrequent or intermittent basis (more than one month before next use), refer to the Battery Maintenance and Storage sections of this manual for information regarding battery charging and fuel deterioration.

AC CIRCUIT BREAKERS

The circuit breakers will automatically switch OFF if there is a short circuit or a significant overload of the generator at each receptacle.

If an AC circuit breaker switches OFF automatically, check that the appliance is working correctly and it does not exceed the rated load capacity of the circuit before resetting the AC circuit breaker ON.

The main circuit breaker controls total output of all outlets to protect the generator from overload or short circuit.

GENERATOR CAPACITY

NOTICE

DO NOT overload the generator's capacity. Exceeding the generator's wattage/amperage capacity can damage the generator and/or electrical devices connected to it.

Make sure the generator can supply enough continuous (running) and surge (starting) watts for the items you will power at the same time.

The total power requirements (Volts x Amps = Watts) of all appliances connected must be considered. Appliance and power tool manufacturers usually list rating information near the model or serial number.

To determine power requirements:

1. Select the items you will power at the same time.
2. Total the continuous (running) watts of these items. This is the amount of power the generator must produce to keep the items running. See the wattage reference chart on the next page.
3. Estimate how many surge (starting) watts you will need. Surge wattage is the short burst of power needed to start electric motor-driven tools or appliances such as a circular saw or refrigerator. Because not all motors start at the same time, total surge watts can be estimated by adding only the item(s) with the highest additional surge watts to the total rated watts from step 2.

Example:

*Wattages listed are approximate. Verify actual wattage.

POWER MANAGEMENT

To prolong the life of the generator and attached devices, use care when adding electrical loads to the generator. There should be nothing connected to the generator outlets before starting the engine. The correct and safe way to manage generator power is to sequentially add loads as follows:

1. With nothing connected to the generator, start the engine as described in this manual.
2. Plug in and turn on the first load, preferably the largest load you have.
3. Permit the generator output to stabilize (engine runs smoothly and attached device operates properly).
4. Plug in and turn on the next load.
5. Again, permit the generator to stabilize.
6. Repeat steps 4 and 5 for each additional load.

Wattage Reference

*Wattages listed are approximate. Verify actual wattage.

EXTENSION CORDS

Asphyxiation hazard. Extension cords running directly into the home increase the risk of carbon monoxide poisoning through any openings. If an extension cord running directly into your home is used to power indoor items, there is a risk of carbon monoxide poisoning to people inside the home. ALWAYS use battery-powered carbon monoxide detector (s) that meet current UL 2034 safety standards when running the generator. Regularly check the detector (s) battery.

Asphyxiation hazard. When operating the generator with extension cords, make sure the generator is located in an open, outdoor area, far away from occupied spaces with exhaust pointed away.

Fire and electrocution hazard. NEVER use worn or damaged extension cords. Damaged or overloaded extension cords could overheat, arc, and burn resulting in death or serious injury.

Before connecting an AC appliance or power cord to the generator:

• Use grounded 3-prong extension cords, tools, and appliances, or double-insulated tools and appliances.
• Make sure the tool or appliance is in good working order. Faulty appliances or power cords can create a potential for electric shock.
• Make sure the electrical rating of the tool or appliance does not exceed the rated power of the generator or the receptacle being used.

EXTENSION CORD SIZING

Only use grounded 3-prong extension cords marked for outdoor use that are rated for the electrical load.

TRANSPORTING

Weight hazard. ALWAYS have assistance when lifting the generator.

• Allow the generator to cool a minimum of 30 minutes before transporting.
• If operating on propane, turn the propane tank valve to the fully closed position.
• Replace all protective covers on the generator control panel.
• Keep the unit level during transport to minimize the possibility of fuel leakage or, if possible, drain the fuel or run the engine until the fuel tank is empty before transport.
• The generator wheels are only intended for hand transport. The wheels are not suitable for towing the generator either on or off-road.
• Use the extendable handle for hand transport. Only use the handle while the generator is OFF, stationary, and resting on a horizontal surface.DO NOT use the handle to lift the generator entirely off the ground, tow it, or upend it.

Fire hazard. DO NOT up-end the generator or place it on its side. Fuel or oil can leak and damage to the generator may occur.

ST SWITCH

The WGen20000c is compatible with the ST Switch, purchased separately. When utility power is on it will provide power (up to 120V @ 20A) to the appliances plugged into the 5-20R receptacle on the ST Switch. When utility power is lost the ST Switch automatically transfers input power from utility to generator power. When utility power is restored, the ST Switch transfers input power back to utility. Visit www.westinghouseoutdoorpower.com for more information.

Only use the lifting hook to lift the unit or attach any load restraints such as ropes or tie-down straps. DO NOT attempt to lift or secure the generator by holding onto any of its other components.

Before lifting the generator, inspect the bracket and make sure it is securely fastened to the generator. DO NOT lift the generator unless the lifting bracket is securely fastened.

1. Hook a chain or strap through the eye on the lifting hook and make sure it is securely fastened.
2. Connect a suitable lifting device to the chain or strap. Inspect chain and hook for any damaged links or any defects that could cause failure. It is recommended to use hooks with safety latches installed.
3. Lift the generator slightly to ensure it is lifting straight and level.

Accidental start-up. Disconnect the spark plug boot from the spark plugs when performing maintenance on the generator.

MAINTENANCE SCHEDULE

Regular maintenance will improve performance and extend the service life of the generator. Follow the hourly or calendar intervals, whichever occurs first. More frequent service is required when operating in adverse conditions as noted below.

AIR FILTER MAINTENANCE

The air filter must be cleaned after every 50 hours of use or six months (frequency should be increased if the generator is operated in a dusty environment).

1. Place the generator on a level surface and allow the engine to cool for several minutes.
2. Release the cover clips then remove the air filter cover.
   
3. Remove the wing nut and air filter. Carefully remove the foam pre-filter. Clean using compressed air. DO NOT submerge the filter in liquids or add oil.
4. Install the air filter in the housing and secure with the wing nut. Reinstall the air filter cover and secure with the clips.

ENGINE OIL LEVEL CHECK

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 generator in 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 or every 8 hours of operation.

1. Place the generator on a level surface and allow the engine to cool for several minutes.
2. Remove the oil dipstick and wipe the dipstick clean.
3. Insert, and remove the oil dipstick.

Acceptable Oil Level – On the flat side of the dipstick, oil is visible up to the first notch.

Low Oil – Oil is below the first notch on the dipstick

4. If low, remove the oil fill cap and add the recommended engine oil incrementally and recheck until the level is at the top notch on the dipstick. DO NOT overfill. If over the top notch on the dipstick, drain the oil to reduce the oil level to the full mark.
5. Replace the oil dipstick and oil fill cap.

ENGINE OIL CHANGE

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

1. Place the generator on a level surface and allow the engine to cool for several minutes.
2. With a damp rag, clean around the oil fill cap. Remove the oil fill cap.
   
3. Place an oil pan (or suitable container) under the oil drain hose.
   
4. Remove the oil drain hose from the retaining clip. Open the hose valve and allow the oil the to drain into the oil pan.
5. Close the oil drain hose valve and secure the hose in the retaining clip.
6. Place the oil pan under the oil filter. Remove the oil filter by rotating it counterclockwise. Allow the oil to drain completely. Clean the area where the oil filter contacts the engine.
   
7. Apply clean oil to the rubber seal on the new oil filter. Install by hand, turning clockwise until the seal contacts the engine then turn another 3/4 turn. DO NOT overtighten.
8. Fill with the recommended oil. Stop frequently to check the oil level. DO NOT overfill. If the engine is overfilled, the excess oil may get transferred to the air cleaner housing and air filter. An indication of overfilling is white or blue smoke coming from the muffler when the engine is running.
   Maximum oil capacity: 2.43 Quart (2.3 Liter)
9. Install the oil dipstick. Screw in the oil fill cap securely.

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.

SPARK PLUG MAINTENANCE

NOTICE

ALWAYS use the Westinghouse OEM or compatible non-resistor-type spark plug. Use of resistor-type spark plug can result in rough idling, misfire, or may prevent the engine from starting.

Inspect and clean the spark plugs after every 100 hours of use or six months. Replace the spark plugs after 300 hours of use or every year.

1. Place the generator on a level surface and allow the engine to cool.
2. Remove the spark plug boots by firmly pulling the boot directly away from the engine.
   
3. Clean the area around the spark plugs.
4. Remove the spark plugs with the included spark plug socket wrench.

NOTICE

NEVER apply any side load or move the spark plug laterally when removing the spark plug.

5. Inspect the spark plugs. Replace if electrodes are pitted, burned, or the insulator is cracked. Only use a recommended replacement plug.
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 each spark plug finger tight, then tighten as additional 3/8 to 1/2 turn with the spark plug wrench.
8. Attach the spark plug boots.

SPARK ARRESTOR SERVICE

Allow the muffler to cool completely before servicing the spark arrestor. Check and clean the spark arrestor after every 100 hours of use or six months. Failure to clean the spark arrestor will result in degraded engine performance.

1. Place the generator on a level surface.
2. Carefully remove the carbon deposits from the spark arrestor screen with a wire brush. The spark arrestor must be free of breaks and tears. Use compressed air to clear removed deposits.

FUEL FILTER

Replace the fuel filter after 100 hours of use.

Note: Have an appropriate gasoline container and rags ready to catch residual fuel in the filter and fuel line.

1. Allow the generator to cool completely.
2. Turn the fuel valve to the OFF position.
   
3. Note the orientation of the fuel filter. Using pliers, remove the fuel line clamps and remove the fuel filter.
4. Install the new fuel filter in the reverse order of removal.

BATTERY MAINTENANCE

The battery gives off explosive hydrogen gas during normal operation. A spark or flame can cause the battery to explode with enough force to kill or seriously hurt you. Wear protective clothing and a face shield, or have a skilled technician perform battery maintenance.

Burn hazard. The battery contains sulfuric acid (electrolyte) which is highly corrosive and poisonous. Wear protective clothing and eye protection when working near the battery. Keep children away from the battery.

NEVER smoke or work near sparks or other sources of ignition. NEVER touch both battery terminals at the same time with your hand or any non-insulated tools. If battery acid contacts skin or clothing, flush immediately with water and neutralize with baking soda.

The battery shipped with the generator has been fully charged. A battery may lose some charge when not in use for prolonged periods of time.

Note: Once started, the generator will charge the battery after 30–60 minutes of use.

BATTERY REPLACEMENT

Battery posts, terminals contain lead and lead compounds. Wash hands after handling.

1. Disconnect the negative (-) cable (black boot) from the negative (-) battery post.
2. Disconnect the positive (+) battery cable (red boot) from the positive (+) battery post.
3. Remove the battery.
   

NOTICE

ALWAYS connect the cables in the following sequence to avoid possible shock.

4. On the replacement battery, connect the positive (+) battery cable (red boot) to the battery positive (+) terminal. Secure the boot over the battery post.
5. Connect the negative (-) battery cable (black boot) to the negative (-) positive terminal. Secure the boot over the battery post.
6. Install the battery in the battery tray. Install the battery holder and side retainer, if removed.

NOTICE

Dispose of the used battery properly according to the guidelines established by your local or state government.

STORAGE

Proper storage preparation is required for trouble-free operation and generator 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.

SHORT TERM STORAGE

• Allow the generator to cool a minimum of 30 minutes before storage.
• If operating on propane, turn the propane tank valve to the fully closed position and disconnect the LPG/ propane hose from the generator and propane tank.
• Replace all protective covers on the generator control panel.
• Wipe the generator with a moist cloth. Clean any debris from the muffler cooling vents.
• Store the generator in a well-ventilated, dry location away from sparks, open flames, pilot lights, heat, and other sources of ignition such as areas with a sparkproducing electric motor or where power tools are operated.
• DO NOT store the generator, gasoline, or propane tanks near furnaces, water heaters, or any other appliances that produce heat or have automatic ignitions.
• With the engine and exhaust system cool and all surfaces dry, cover the generator to keep out dust.DO NOT use a plastic sheet as a dust cover. Non-porous materials trap moisture and promote rust and corrosion.

LONG TERM STORAGE

Even properly stabilized fuel can leave residue and cause corrosion if left long term. If storing the generator for over six months, drain the fuel tank.

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

1. Unscrew the fuel tank cap. Remove the fuel screen filter by slightly compressing it while removing it from the tank.
2. 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.

OR
Disconnect the fuel line from the bottom of the fuel tank and allow the fuel to drain into an approved gasoline container. Reinstall the fuel line.

3. Reinstall the fuel screen filter and the fuel tank cap.
4. Start the generator and allow it to run until the generator engine stops.
5. Push the battery switch to the OFF position.
6. Disconnect the battery.

VALVE CLEARANCE

NOTICE

Checking and adjusting valve clearance must be done when the engine is cold.

Perform this procedure on both cylinders.

1. Remove the rocker arm cover and carefully remove the gasket. If the gasket is torn or damaged, it must be replaced.
2. Remove the spark plug so the engine can be rotated more easily.
3. Rotate the engine to Top Dead Center (TDC) by momentarily pushing the Start button. Looking through the spark plug hole, the piston should be at the top (both valves are closed).
4. Both the rocker arms should be loose at TDC on the compression stroke. If they are not, rotate the engine 360°.
5. Insert a feeler gauge between the rocker arm and the valve stem to measure valve clearance.
   

6. If an adjustment is necessary, hold the rocker arm pivot and loosen the pivot adjusting nut.
7. Turn the rocker arm pivot to obtain the specified clearance. Hold the rocker arm pivot and re-tighten the pivot adjusting nut to the specified torque.
   Torque: 106 inch-pound (12 N•m)
8. Perform this procedure for the other valve.
9. Install the gasket, rocker arm cover, and spark plug.

TROUBLESHOOTING

SCHEMATIC