1. Introduction
This manual provides essential instructions for the safe and effective use of your WOJET 18-Inch Pressure Washer Surface Cleaner, Model PA7603. Please read this manual thoroughly before assembly, operation, or maintenance to ensure optimal performance and user safety.
The WOJET 18-Inch Pressure Washer Surface Cleaner is designed for efficient and streak-free cleaning of various outdoor surfaces including concrete driveways, sidewalks, decks, and patios. Its robust design and user-friendly features aim to simplify your cleaning tasks.
2. Product Overview
The WOJET 18-Inch Pressure Washer Surface Cleaner is engineered for superior cleaning performance and user convenience. Key features include:
- No-Strip Cleaning: Equipped with two high-pressure water jets, this surface cleaner delivers powerful and uniform cleaning, preventing the streaking often associated with individual nozzles. It is effective on concrete, brick, wood, and tile surfaces.
- Enhanced Mobility and Comfort: Featuring four universal wheels and dual handles, the design ensures easy maneuverability and control. This reduces strain on the user's arms and back, making cleaning more comfortable and efficient.
- Upgraded Durability and Maintenance: A fully sealed and pre-greased swivel prevents clogging from debris, extending the lifespan and performance of the unit. Constructed from high-density plastic, it resists high pressures and rust.
- Easy Assembly and Compatibility: Designed for quick setup, the surface cleaner features a 3/8" Quick Plug inlet for secure attachment to pressure washer hoses. It is compatible with most gas and electric pressure washers exceeding 2000 PSI and 2 GPM.

Image: The WOJET 18-inch Pressure Washer Surface Cleaner, showcasing its dual handles and four universal wheels for easy maneuverability.
3. Setup & Assembly
Follow these steps to assemble your WOJET Surface Cleaner:
- Attach the Spray Gun to the Handle: Align the handle and spray gun, then thread the screws securely.
- Assemble the Handles: Insert the top handle into the bottom handle and secure it with the provided pin. Secure the end of the bottom handle to the surface cleaner with the pin.
- Connect the Hose: Pass the high-pressure hose through the fixed ring on the handle. Wrap one end of the hose with Teflon tape and connect it to the spray gun's water outlet. Wrap the other end of the hose with Teflon tape and connect it to the swivel on the surface cleaner. Tighten all connections securely, but do not overtighten.
- Verify Nozzle Orientation: Ensure the nozzle openings are securely tightened and the spray pattern is in line with the spray bar.
Video: Assembly instructions for the WOJET Pressure Washer Surface Cleaner (PA7603), demonstrating how to connect the handles, spray gun, and hose.

Image: All components of the WOJET Surface Cleaner laid out, including the main cleaning head, handles, spray gun, and hose, ready for assembly.
4. Operating Instructions
Before operating, ensure your pressure washer meets the minimum requirements (above 2000 PSI & 2 GPM). Always wear appropriate safety gear, including eye protection.
- Connect to Pressure Washer: Attach the high-pressure hose of your pressure washer to the inlet plug on the surface cleaner's spray gun.
- Start Pressure Washer: Connect the high-pressure hose to your pressure washer and start the pressure washer as described in your pressure washer manual.
- Begin Cleaning: Walk slowly behind the cleaning deck, allowing the surface cleaner to work effectively. Avoid lifting the cover when cleaning to prevent injury or damage.
- Check for Streaking/Swirling: If streaking or swirling occurs, slow your pace. If the issue persists, the nozzles may be clogged or your machine may not have enough working pressure.
Video: A brief introduction to the WOJET Pressure Washer Surface Cleaner (PA7603), showing it in action on a paved surface.

Image: The WOJET Surface Cleaner effectively cleaning a concrete driveway, demonstrating its wide coverage and ease of use.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your surface cleaner:
- Nozzle Maintenance: If excessive pump pressure is felt (a pulsing sensation while squeezing the trigger), it may indicate a clogged or dirty nozzle. Turn off the pressure washer and shut off the water supply. Disconnect the surface cleaner from the high-pressure hose. Use a straightened paper clip or the provided nozzle cleaning tool to free any foreign materials clogging the nozzle. Reconnect and test.
- Swivel Maintenance: The fully sealed and pre-greased swivel minimizes maintenance needs. Avoid disassembling the swivel unless necessary.
- Storage: Store the surface cleaner in a dry, protected area when not in use.

Image: Close-up of the WOJET Surface Cleaner's brush skirt and universal wheels, highlighting components that require occasional inspection.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No pressure or weak spray | Clogged nozzles, insufficient water supply, pressure washer not operating correctly. | Clean nozzles (see Maintenance), ensure adequate water flow to pressure washer, check pressure washer manual. |
| Streaking or uneven cleaning | Moving too fast, clogged nozzles, incorrect nozzle pattern. | Slow down cleaning pace, clean nozzles, ensure nozzles are pointed correctly (in line with spray bar). |
| Vibration or unusual noise | Damaged spray bar, loose connections, debris in swivel. | Inspect spray bar for damage, tighten all connections, check swivel for debris. |
7. Specifications
- Brand: WOJET
- Model Number: PA7603
- Product Dimensions: 18"L x 18"W x 65"H
- Deck Width: 18 inches
- Maximum Working Pressure: 4500 PSI
- Maximum Flow Rate: 5 Gallons Per Minute (GPM)
- Minimum Pressure Requirement: 2000 PSI
- Minimum Flow Rate Requirement: 2 GPM
- Hose Length: 63 Inches
- Item Weight: 25.1 pounds
- Power Source: Manual (requires external pressure washer)
- Connection Type: 3/8" Quick Connect
8. Warranty & Support
WOJET is committed to providing high-quality products and customer satisfaction. We offer life-long after-sales service for every customer.
If you require any assistance, have questions, or need to order replacement parts, please do not hesitate to contact us. Refer to the contact information provided in your product packaging or visit the official WOJET website for support.
The package includes a tool kit with a manual, Teflon tape, and assembly rings and pins for easy installation. Additionally, it comes with extra two replacement nozzles and a nozzle cleaner for better maintenance.