VEVOR Gas Pressure Washer, 3400 PSI 2.6 GPM, Gas Powered Pressure Washer Manual

Discover the ultimate guide to maximizing the performance and longevity of your VEVOR Gas Pressure Washer, 3400 PSI 2.6 GPM. This comprehensive product manual download is meticulously crafted to ensure you can effortlessly set up, troubleshoot, and optimize your gas-powered pressure washer.

The manual covers every aspect of your VEVOR machine, from initial assembly and maintenance tips to detailed operational instructions. With clear illustrations and step-by-step guidance, using your pressure washer to clean cars, homes, driveways, and patios has never been easier.

The manual also includes a section on the spray gun, extension wand, and five quick-connect nozzles, ensuring you get the most out of your equipment. Don’t let technical difficulties slow you down—download the VEVOR Gas Pressure Washer manual today and maintain your pressure washer in top condition for years to come.

Gasoline High Pressure Washer User Manual

Please read and understand all instructions before use. Retain this manual for future reference.

General Safety Instructions

Read instructions carefully before operating this product.

• Keep bystanders away.
• This product is for outdoor use only.
• Ensure the engine is stopped before adjusting, cleaning, or performing maintenance.
• Always turn off the engine and water supply when finished.
• Do not use the product if it is found to be damaged.
• Only use detergents specified by the manufacturer. Other chemicals may compromise the safety of the product.
• Do not direct the pressure jet towards mechanical parts containing lubricant grease.
• Clean vehicle tires from a minimum of 50cm to avoid damage by thehigh-pressure jet.
• Do not point high-pressure jets at people, animals, live electrical parts, or the product itself.
• Do not use accessories such as hoses and connections that the manufacturer does not advise.
• Engage the high-pressure safety catch located on the gun when not in use.
• Do not step/stand on the high pressure hose.
• Ensure the nozzle is securely attached before using the Product. Pressure can cause it to be fired from the lance with considerable force, which could cause injury or damage.
• Be ready for the kick-back force and the sudden torque on the spray assembly when operating the trigger.
• A high-pressure jet can remove paint and other surface finishes. It can also damage tarmac and grouting.
• Switch off entirely when not attended.
• The hose is designed specifically for operation with high pressures; avoid damage that may prevent the correct operation of the product.
• This product will not be used by children or anyone with reduced capabilities.
• Always completely unwind the high-pressure hose before operation.
• Ensure that the machine is switched off before unwinding the high-pressure hose, and take care not to pull the machine over.
• Do not let the high-pressure hose contact the hot engine exhaust.
• Do not use this product indoors.
• Keep exhaust emissions away from air intakes.

Explanation of the Symbols on the Appliance

Technical Parameters

Maintenance and Storage

• Do not attempt to modify the product in any way.
• To ensure good operating conditions, arrange regular servicing from an authorized agent.
• Only use replacement parts supplied by the manufacturer.
• Only use fresh, clean, and good-quality fuel in the engine.
• Never operate the engine without oil.
• Never refuel close to naked flames, sparks, or other ignition sources, e.g., cigarettes.
• Do not refuel when the engine is hot.
• Wipe up and correctly dispose of fuel spillage immediately with a suitable medium.
• Move away from the refueling areas before restarting the engine—store fuel for short periods only in a suitable container away from heat and direct sunlight.
• Clean the pressure washer thoroughly after each use.
• Regularly check external nuts and fixings to ensure vibration caused by everyday use has not begun to loosen them. Remove the spark plug ignition lead from the back of the spark plug and position the lead to avoid accidental reconnection.
• Store the machine in a secure, dry location out of reach of children.
• Empty the fuel tank before storage.

Getting to Know Your Petrol Pressure Washer

1. Engine
2. Pump
3. Lower frame
4. Handle
5. Panel
6. Wheel
7. Lance
8. Hand spray gun
9. Nozzle
10. Hose

Gas Pressure Washer Assembly

NOTE: Every machine is tested during production, so a few drops of water may be inside the pump assembly.

WARNING: The engine is not provided with oil. It is necessary to fill the unit before starting the engine.

WARNING: The engine is not provided with oil. Therefore, it is necessary to fill the unit before starting the engine. The machine has two oil fill inlets at the front and back. Remove the desired cap and serve it with the engine oil specified at the upper-level mark. Then, replace the oil filler cap.

Gas Pressure Washer Operation and Use Precautions

WARNING

• The engine is not filled with oil. It is necessary to fill the unit before starting the engine. The engine will not produce a spark unless sufficient oil is inside.

CAUTION

• Do not run the engine with high or low oil levels, which can cause engine damage.
• Only use unleaded gasoline.
• Avoid damaging your hose by ensuring it does not touch the hot exhaust during and after use.
• Avoid damaging your pump by ensuring the water supply is clean and free of foreign objects.
• Inlet water temperature must not exceed 40 °C and 20PSI.
• Never let the appliance operate for more than 2 minutes with the spray gun in the closed position.
• Never operate the pressure washer with repeated and rapid on-and-off trigger movements.

Water Supply from the Water Main

• Connect a water supply hose (not supplied) to the water inlet connection of the pressure washer.
• The machine is not suitable for connecting to the potable water mains.
• Turn on the water supply and pull the trigger until water continually flows out of the nozzle.

Water Supply From a Container

• Unscrew the coupling part for the water inlet
• Screw the suction hose with filter (not included) onto the water connection of the unit.
• Hang the filter in the container.
• Vent the unit before operation.
• Unscrew the high-pressure line at the high-pressure outlet of the unit.
• Switch on the unit and let it run until the water at the high-pressure outlet is free of bubbles.
• Switch off the unit and screw on the high-pressure hose again.

NOTE:

It is recommended that you press the trigger while pulling the starter handle to assist the first startup.

Safety Instructions for the Gas Pressure Washer

1. Before operating the engine, read all instructions carefully, as injury or permanent damage to equipment may occur.
2. Run the engine in a well-ventilated area.
3. Ensure the appliance is at least one meter from building walls or other equipment.
4. Not to be used in an explosive environment, keep the appliance away from flammable liquids such as petrol.
5. Refuel in a well-ventilated area with the engine switched off and avoid sparks or naked flames.
6. When refueling, ensure you do not overfill the fuel tank.
7. If any fuel is spilled ensure it is deaned up thoroughly before restarting.
8. Ensure the fuel cap is located securely.
9. The exhaust mufflers, engine case, and pump get hot after the engine is switched off.
10. Ensure the appliance is cooled before transporting or storing.
11. Sound pressure level: 94 dB; sound power level: 109 dB. Wear ear protection to prevent hearing damage!
12. High-pressure jets can be dangerous if misused. Please do not aim at people, animals, active electrical equipment, or the appliance itself.
13. Wear protective gloves! Wear safety shoes! Safety goggles!
14. Forbidden to adjust the pressure valve, otherwise it will cause pump damage.
15. 60 degrees hot water will be ejected from the thermal relief valve before the water gun is closed for about 1 minute. Careful burns.

WARNING:

• Do not use the machine within range of persons unless they wear protective clothing.
• Do not direct the jet against yourself or others to clean clothes or footwear.
• Risk of explosion 一 Do not spray flammable liquids.
• High-pressure hoses, fittings, and couplings are important for the machine’s safety. Use only the hoses, fittings, and couplings recommended by the manufacturer.
• Ensure machine safety, use only original spare parts from the manufacturer or approved by the manufacturer.
• Water that has flowed through backflow preventers is considered to be non-portable.

Gas Pressure Washer Pre-Operation Inspection

CAUTION: Engine oil is key to determining the engine’s performance. Do not use engine oil with additives or 2-stroke gasoline engine oil, as they do not have enough lubricating properties and may shorten the engine’s service life.

1. Ensure the engine is on level ground.
2. 0.6L 15W-30 is recommended for general all-temperature use. (FIG. 26)
3. Remove the dipstick and clean it.
4. Reinsert the dipstick into the oil filler without screwing it in and checktheoil level.
5. Add the required engine oil to the oil filler mark if the oil level is too low.
6. Replace the dipstick securely.

CAUTION: Running with insufficient engine oil may damage the engine severely.

Fuel and Fuel Tank

Only use unleaded gasoline or fuel with an octane number over 86. Unleaded gasoline or fuel will decrease the possibility of producing carbon deposits and prolong the engine’s service life. Never use old or polluted gasoline or fuel or a mixture of gasoline and engine oil. Make sure the fuel is free of dirt and water.

Caution

Handle fuel with care because it can damage plastic and painted surfaces. Remove the fuel filler cap and check the fuel level. If the fuel level is too low, refuel the tank. Remember, do not fill over the fuel filter shoulder when adding fuel.

Warning

Petrol is highly flammable and is explosive under certain conditions. Refuel in a well-ventilated area with the engine stopped. Do not smoke or allow flames and sparks in the area where petrol is stored or where the fuel tank is refuelled. After refueling, make sure the fuel cap is returned securely. Be careful not to spill fuel when refuelling. Spilled fuel or fuel vapor may ignite. If any fuel is spilled, ensure the area is dry before starting the engine.

Fuel Tank Filter

The fuel tank filter should be removed and cleaned after 150 hours of running or every three months. Remove the fuel tank filler cap and the filter, clean the filter thoroughly using an environmentally friendly water-based degreasing agent, and refit.

Oil Level Switch

The engine oil alarm prevents the operator from starting the engine when the oil in the crankcase is insufficient. Running with inadequate oil will damage the engine. Once the oil level in the crankcase is too low, the engine oil alarm will stall the engine automatically to avoid damage while the engine switch is still ON.

Air Filter (Fig. 28)

The air filter should be removed, examined for deterioration, and cleaned after every 100 hours of running or every month. Clean the air filter thoroughly using an environmentally friendly water-based degreasing agent. Allow it to dry thoroughly, then replace it. Only run the engine with the air filter fitted.

Storage

If the engine is not to be used or is to be stored for more than one month, the following storage procedure should be carried out.

1. Drain all the fuel from the fuel tank and the carburetor.
2. Remove the spark plug and pour approximately one tablespoonful of clean engine oil into the spark plug hole.
3. With the ignition turned OFF, gently pull on the recoil starter cords several times.
4. Re-fit the spark plug and pull the recoil starter cord until the piston is on the compression stroke (when resistance is felt), then stop pulling.
5. Store the pressure washer in a dry, well-ventilated place under a cover to prevent dust or debris from accumulating on the pressure washer.

Winter and Long-Term Storage

If the pressure washer is not to be used for more than three months or if there is danger of ice or frost during winter months, the pump unit will require protection to prevent seizing and damage caused by freezing.

Maintenance

Exhaust Control System

With the engine running, carbon monoxide, nitrogen oxides, and hydrocarbons are produced, and in certain conditions, nitrogen oxides and hydrocarbons will react together to make smoke. Carbon monoxide is toxic, so exhaust control is essential. The manufacturer decreases exhaust emissions by introducing poor-fuel carburetors and other devices to solve the problem. To keep the exhaust of your engine within the standard exhaust emission values, pay attention to the following:

Maintenance

Follow the maintenance schedule to maintain the engine periodically. The schedule is based on everyday use in normal conditions. For example, more frequent maintenance will be necessary if the engine is used under heavy loads, dusty or wet conditions, or high temperatures.

Replacement of Parts

We recommend you use parts supplied by the manufacturer or equivalent quality parts. Replacement parts of inferior quality may impair the effectiveness of the exhaust control system.

Modifying

Modifying the exhaust control system may cause exhaust emissions to exceed statutory limits. Illegal modifications are:

Dismantling or modifying any part of the air inlet or outlet system.

Modifying or removing speed adjustment controls or connections, which may result in the engine running outside its set parameters.

Problems Affecting Exhaust Emissions

1. Difficulty in starting or stopping.
2. Erratic idling.
3. Giving off black smoke or excessive fuel consumption.
4. Poor ignition spark or no spark.
5. Ignition is too advanced. If you have any of the above problems, please contact your dealer.

Caution

Before carrying out any maintenance on the machine, release any pressure and remove the water connection.

Water Suction Filter Checking

Check periodically to avoid deposits clogging it

Spark Plug Maintenance

After every 50 hours, clean the spark plug with a brush. If the insulator on the spark plug is damaged, replace it immediately. Check the spark plug gap with a feeler gauge; the gap should be 0.7 – 0.8mm. If adjustment is necessary, bend the side electrode carefully. Check the spark plug gasket for good condition, or replace it with a new one. Screw the spark plug to the bottom by hand and then tighten it using a spark plug wrench.
If a new spark plug is used, twist a 1/2 more turn after impacting the gasket. If using the original one, twist 1/8 -1/4 more turns.

CAUTION:

Service the spark plug eliminator at least once every 100 hours to keep it in good condition.

WARNING:

The muffler is very hot while running the engine and for a prolonged period after stopping. Only service after the engine cools down completely. Unscrew two nuts and remove the exhaust elbow from the engine body. Unscrew five screws from the muffler guard and take it out.

Note

Unscrew the spark plug eliminator and separate the muffler. Clean the spark eliminator mesh with a wire brush. Reinstall the spark eliminator in reverse order of removal.

CAUTION:

Be careful not to damage the spark eliminator. Never use a damaged spark eliminator.

Carburettor Idling Adjustment

Start and preheat the engine until it reaches normal working temperature. Obtainstandard idling by adjusting the throttle fixing screw under the engine, Standardidling: 3400 ±300rpm.

Transport

Transport with the fuel switch in the off position. Ensure the engine is cooled to avoid the risk of burns or fire.

CAUTION:

Do not tilt the engine to avoid spilling fuel. Spilled fuel or fuel vapor may ignite.

Storage

If the engine is not to be used for a long period of time, ensure it is stored correctly. Make sure the storage area is dry and free of dust.

Prepare for Storage

Disconnect the spark plug. Put a spoonful of fresh engine oil into the cylinder and rotate the engine to distribute the oil evenly.

Replace the spark plug. Pull the starting rope until you feel resistance, and then keep pulling to align the arrow of the starting sleeve with the hole of the starter. This will close both the inlet and outlet valves to help prevent the engine from rusting inside. Cover the engine to keep it free of dust.

Removal from Storage

Before re-using, service the engine according to the instructions in the following table.

Unscrew the drain plug and drain out the fuel in the carburetor.

Please turn off the engine switch first, disconnect the deposit cup, and empty it.

NOTE

Do not dump oil containers or discarded engine oil into the ground. For environmental protection, take discarded engine oil in a closed container to a recycling station.

WARNING

Fuel is highly flammable and explosive under certain conditions. Keep cigarettes, naked flames, and sparks away from the operating site.

To keep the engine in sound condition, the user should maintain it according to the table below.

CAUTION

Use parts that the manufacturer supplies; otherwise, damage to the engine may occur.

WARNING

Stop the engine before servicing. If servicing is required while the engine is running, ensure there is good ventilation in the area. Exhaust emissions contain toxic carbon monoxide, which may cause injury or be fatal if inhaled.

Gas Pressure Washer Engine Oil Replacement

• Place the machine on a level surface and warm the engine for several minutes. Then stop the engine and remove the oil filler cap.
• Place an oil pan under the engine. Remove the oil drain plug so that the oil can be completely drained. You will need to use a tube or other similar device to prevent the oil from leaking onto the frame of the pressure washer.
• Check the oil drain plug, gasket, oil filler cap, and O-ring; if damaged, replace them.
• Reinstall the oil drain plug.
• Add engine oil up to the upper level of the dipstick.

NOTE

Do not dump oil containers or discard engine oil into rubbish boxes or the ground. For environmental protection, take discarded engine oil in a sealed container to a recycling station.

NOTES:

• Only for inside ventilating double-core carburetors.
• Only for paper-core air cleaners.

More often than in scheduled use, if used in dusty conditions

Items are to be replaced by the dealer unless you are fully trained and equipped to do so.

Pump Notice

• For the convenience of transport, the Pump without machine oil and the breather plug is not installed. Please add 15W/40 or 30 machine oil before using. Machine oil quantity is subject to a slightly not-too-oily lens center line, then install the breather plug.
• After using the new machine for 20 hours, pour the machine oil out and add the appropriate amount of kerosene, fuel according to the standard, a little less than the oil lens center line. Operate the pump without load in 10-15 seconds, then close the machine, pour out the kerosene, and add the new oil.
• Please check the oil mass before using. If the oil level is less than 1/2 of the oil lens, oil must be added to the center line. Accumulative use after 100 hours, change the oil similarly. And every 100 hours, change the oil. It’s crucial to extend the service life of the pump.

Gas Pressure Washer Troubleshooting

Pump Troubleshooting

Engine Troubleshooting

Gas Pressure Washer Pump Parts Drawing