1. Safety Information
WARNING: Read and understand all instructions before operating this pressure washer. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.
- Always wear appropriate personal protective equipment (PPE) including safety glasses, hearing protection, and protective footwear.
- Never point the spray gun at people, pets, or electrical devices. High-pressure spray can cause severe injury.
- Operate the pressure washer in a well-ventilated area to avoid carbon monoxide poisoning.
- Do not operate the unit indoors or in enclosed spaces.
- Ensure all connections are secure before starting the unit.
- Keep children and pets away from the operating area.
- Use only unleaded gasoline with an octane rating of 87 or higher.
- Use SAE 10W-30 oil for engine lubrication.
- Never refuel a hot engine. Allow the engine to cool before adding fuel.
- Always turn off the engine and relieve pressure before performing any maintenance or moving the unit.
2. Product Overview
The BILT HARD 4000 PSI Gas Pressure Washer is designed for heavy-duty cleaning tasks. It features a powerful 302cc 4-stroke engine, a durable triplex pump, and a range of quick-connect nozzles for versatile applications.
2.1 Key Features
- Enhanced Performance: Equipped with a powerful 9.5 HP 302cc 4-stroke, single-cylinder OHV horizontal shaft engine, delivering 18.5 ft-lbs of torque.
- Commercial-Grade Pump: Features a maintenance-free triplex brass head axial cam pump generating up to 4000 PSI and 4.0 GPM water output.
- Durable Hose: Includes a 3/8" × 50' high-pressure hose resistant to kinks, abrasions, and marks.
- Versatile Nozzles: Comes with five quick-connect nozzle tips (0°, 15°, 25°, 40°, and soap) for various cleaning tasks.
- Built-In Soap Tank: Allows for convenient addition of detergents or cleaning chemicals.
- Portable Design: Equipped with 10-inch PU foam wheels and a sturdy steel frame for easy maneuverability.
2.2 Components

Image Description: An overhead view of the BILT HARD 4000 PSI Gas Pressure Washer with its main components laid out. Visible parts include the main pressure washer unit (blue and black), a spray gun, a cleaning needle, an oil funnel, five quick-connect nozzle tips (red 0°, yellow 15°, green 25°, white 40°, black soap), and a 50 ft high-pressure hose with 3/8" quick connect fittings.
- Pressure Washer Unit (Engine and Pump Assembly)
- Spray Gun and Wand
- High-Pressure Hose (50 ft)
- Quick-Connect Nozzle Tips (5 types)
- Oil Funnel
- Cleaning Needle
- Built-in Soap Tank
- 10-inch PU Foam Wheels
3. Setup
Proper setup is crucial for safe and efficient operation. Follow these steps before starting your pressure washer.
3.1 Fuel and Oil Requirements
- Fuel: Use unleaded gasoline with an octane rating of 87 or higher. The fuel tank capacity is 1.6 gallons.
- Oil: Use SAE 10W-30 oil. Ensure the oil level reaches the recommended mark on the dipstick.
Video Description: This video demonstrates how to check and fill the gasoline and engine oil levels in the pressure washer. It shows opening the fuel cap, pouring gasoline from a jerry can, checking the oil dipstick, and pouring engine oil using a funnel until the recommended level is reached.

Image Description: A close-up view of the pressure washer's pump and engine connections. Labels indicate the "High Pressure Hose" connection, "Detergent Hose" connection, "Water Supply: 3/4-11.5NH thread," and the "Soapbox" (built-in soap tank). Arrows illustrate the flow of water and detergent through the system.
3.2 Connecting Hoses
- Connect the high-pressure hose to the pump outlet and the spray gun.
- Connect a garden hose (minimum 5 GPM at 20 PSI) to the water inlet on the pump. Ensure the water source is open.
- If using detergent, connect the detergent hose to the built-in soap tank.
4. Operation
Follow these steps to start and operate your pressure washer safely and effectively.
4.1 Starting the Engine
- Ensure fuel and oil levels are adequate.
- Turn the engine switch to the "On" position.
- Open the fuel valve to the "On" position.
- Close the choke lever by moving it to the "Close" position.
- Locate the recoil cord and pull slowly until resistance is felt. At this point, pull rapidly to start the engine. Repeat if necessary.
- Once the engine starts, gradually move the choke lever to the "Open" position.
Video Description: This video provides a step-by-step guide on how to start the gas pressure washer. It shows turning the engine switch to "On", opening the fuel valve, closing the choke, pulling the recoil cord to start, and then opening the choke once the engine is running.
4.2 Using Nozzle Tips
Select the appropriate quick-connect nozzle tip for your cleaning task. Different tips provide varying spray patterns and pressure levels.

Image Description: A visual guide to the five quick-connect nozzle tips included with the pressure washer. Each tip (0° red, 15° yellow, 25° green, 40° white, and black soap nozzle) is shown with its corresponding spray pattern and recommended uses for various surfaces like metal, walls, pavements, wood decks, windows, and vehicles.
- 0° (Red): Strongest, most focused stream for tough stains and hard-to-remove dirt. Use with caution.
- 15° (Yellow): High-pressure, narrow fan spray for intensive cleaning on hard surfaces.
- 25° (Green): Medium-pressure, wider fan spray for general cleaning of various surfaces.
- 40° (White): Low-pressure, wide fan spray for gentle cleaning and flushing surfaces.
- Soap (Black): Lowest pressure, widest fan spray for applying detergent.

Image Description: A collage of four images showing the BILT HARD pressure washer being used for different cleaning applications. These include removing peeling paint from wood, cleaning dirt from pavement, washing a car tire, and cleaning a concrete surface.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your pressure washer.
- Engine Oil: Check oil level before each use. Change oil after the first 5 hours of operation, then every 50 hours or annually.
- Air Filter: Clean or replace the air filter every 50 hours or more frequently in dusty conditions.
- Spark Plug: Inspect and clean the spark plug annually or every 100 hours. Replace if necessary.
- Fuel Filter: Inspect and clean the fuel filter annually.
- Nozzles: Clean clogged nozzles with the provided cleaning needle.
- Storage: For long-term storage, drain all fuel and run the engine until it stops. Add fuel stabilizer if storing with fuel. Store in a dry, frost-free area.
6. Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine will not start | No fuel or low fuel level | Fill fuel tank with fresh gasoline. |
| Engine switch in "Off" position | Turn engine switch to "On". | |
| Choke not in correct position | Adjust choke lever as per starting instructions. | |
| Low pressure | Clogged nozzle | Clean nozzle with cleaning needle. |
| Insufficient water supply | Ensure garden hose is fully open and free of kinks. Check for minimum 5 GPM at 20 PSI. | |
| Engine runs rough | Stale fuel | Drain old fuel and refill with fresh gasoline. |
7. Specifications
- Brand: BILT HARD
- Model Number: TL-THA-0356-N
- Power Source: Gas Powered
- Engine: 302cc 4-stroke, single-cylinder OHV
- Maximum Pressure: 4000 PSI
- Maximum Flow Rate: 4.0 GPM
- Hose Length: 50 Feet
- Item Weight: 128.3 Pounds
- Product Dimensions: 1"L x 1"W x 1"H (Note: These dimensions seem generic and might not reflect actual product size)
- Color: Blue
- UPC: 756594930918
8. Warranty and Support
For warranty information, technical support, or replacement parts, please refer to the contact information provided with your purchase or visit the BILT HARD official website. Keep your purchase receipt for warranty claims.
Manufacturer: Zhejiang Yaofeng Power Technology Co., Ltd.





