1. Introduction
This manual provides essential information for the safe and efficient operation, setup, and maintenance of your DEWINNER 1200W Electric Pressure Washer, model DE-T356PRO. Please read these instructions carefully before using the product and retain them for future reference.

Image 1.1: The DEWINNER pressure washer is designed for portability and ease of use, featuring a compact and lightweight structure for one-hand carry.
2. Safety Information
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury. Failure to follow these instructions may result in serious injury or property damage.
- Electrical Safety: Ensure the power outlet is properly grounded. Do not operate the pressure washer with damaged cords or plugs. Keep all connections dry and off the ground.
- High Pressure Hazard: The high-pressure spray can cause serious injury. Never direct the spray at people, pets, or electrical devices. Always wear appropriate eye protection (safety glasses) and protective clothing.
- Water Connection: Connect the pressure washer to a cold water supply only. Do not use hot water. Ensure all water connections are secure to prevent leaks.
- Chemical Use: Use only pressure washer safe detergents. Follow the detergent manufacturer's instructions for proper use and disposal.
- Children and Pets: Keep children and pets away from the pressure washer during operation.
- Ventilation: Operate the pressure washer in a well-ventilated area.
3. Package Contents
Verify that all components are present and undamaged upon unpacking. If any parts are missing or damaged, contact customer support.

Image 3.1: All components included with the DEWINNER 1200W Electric Pressure Washer.
- 1 x 1200W Electric Pressure Washer Unit
- 1 x Water Gun
- 4 x Quick-Connect Nozzles (0°, 15°, 25°, 40°)
- 1 x 8-Meter High-Pressure Hose
- 1 x Water Pipe (Inlet Hose)
- 1 x Soap Bottle (Foam Cannon)
4. Setup Instructions
Follow these steps to assemble and prepare your pressure washer for first use.
4.1 Assembly

Image 4.1: Visual guide for connecting the water gun components.
- Install Extension Rod: Securely attach the extension rod to the water gun.
- Install Nozzle: Select the desired quick-connect nozzle and insert it into the end of the extension rod until it clicks into place.
- Insert High-Pressure Hose: Connect the 8-meter high-pressure hose to the water gun and the pressure washer unit, ensuring a tight fit.
4.2 Water Supply Connection
The DEWINNER pressure washer supports multiple water intake methods:

Image 4.2: Options for connecting the pressure washer to a water source.
- Faucet Self-Priming: Connect the water pipe (inlet hose) directly to a standard garden faucet.
- Bucket Self-Priming: Place the filtered end of the water pipe into a bucket of clean water.
- Pool Self-Priming: Place the filtered end of the water pipe into a pool or other suitable water reservoir.
Important: Ensure the water supply is clean and free of debris to prevent damage to the pump.
4.3 Initial Priming (First Use)
When using the pressure washer for the first time, air may remain inside the pump. Follow these steps to release the air:
- Connect the water supply but do not turn on the pressure washer.
- Allow water to flow naturally through the system and out of the water gun until a steady stream of water is visible, indicating air has been released.
- Start the pressure washer and briefly pull the trigger of the spray gun to release any remaining air. This step may need to be repeated several times until consistent pressure is achieved.
5. Operating Instructions
Understand the different pressure modes and nozzle types to optimize your cleaning tasks.
5.1 Powering On and Off
- To Turn On: Plug the power cord into a grounded electrical outlet. Press the ON/OFF switch on the unit to the 'ON' position.
- To Turn Off: Press the ON/OFF switch to the 'OFF' position. Unplug the power cord from the outlet.
5.2 Adjustable Pressure Modes
The pressure washer features three adjustable pressure modes for versatile cleaning.

Image 5.1: The three pressure modes available for different cleaning needs.
- Low Pressure (MAX 1200PSI): Ideal for delicate surfaces such as car paint, windows, or watering plants.
- Middle Pressure (MAX 1500PSI): Suitable for general cleaning tasks like garden furniture, fences, and light dirt.
- High Pressure (MAX 1885PSI): For tough stains on driveways, concrete, brick, and heavy-duty cleaning.
Adjust the pressure mode using the controls on the unit to match the cleaning requirement.
5.3 Quick-Connect Nozzles
The four quick-connect nozzles provide different spray patterns for specific applications.

Image 5.2: Different nozzle types and their recommended uses.
- 0° Nozzle (Red): Produces a concentrated, high-impact stream for stubborn stains and hard-to-reach areas. Use with extreme caution on durable surfaces only.
- 15° Nozzle (Yellow): Provides a powerful, narrow spray for intensive cleaning of concrete, brick, and other hard surfaces.
- 25° Nozzle (Green): Offers a wider spray pattern for general cleaning of fences, wood decks, and patio furniture.
- 40° Nozzle (White): Delivers a broad, gentle spray, ideal for washing cars, windows, and other delicate surfaces.
5.4 Using the Foam Blaster (Soap Bottle)
For enhanced cleaning, attach the included soap bottle (foam cannon) to the water gun.
- Fill the soap bottle with a pressure washer-safe detergent.
- Attach the soap bottle to the end of the water gun or extension rod.
- Operate the pressure washer to apply a thick layer of foam, which helps lift grime and dirt.
- After applying detergent, remove the soap bottle and switch to a rinsing nozzle (e.g., 25° or 40°) to rinse the surface thoroughly.

Image 5.3: Using the soap bottle for car washing.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your pressure washer.
- After Each Use: Flush the system with clean water to remove any detergent residue. Turn off the water supply, then squeeze the trigger to release any remaining pressure.
- Nozzle Cleaning: Periodically clean the nozzles to prevent blockages. Use the included nozzle cleaning tool (if applicable) or a thin wire to clear any debris.
- Inlet Filter: Check and clean the water inlet filter regularly to prevent dirt from entering the pump.
- Storage: Store the pressure washer in a dry, frost-free environment. Disconnect all hoses and drain any remaining water from the unit and accessories to prevent freezing damage.
- Power Cord: Inspect the power cord for any damage before and after each use.
7. Troubleshooting
Refer to this section for common issues and their solutions.
- No Pressure or Low Pressure:
- Ensure the water supply is fully open and free of kinks.
- Check the water inlet filter for blockages.
- Perform the initial priming steps (Section 4.3) to remove air from the pump.
- Verify that the nozzle is not clogged.
- Motor Not Starting:
- Check if the power cord is securely plugged into a working, grounded outlet.
- Ensure the ON/OFF switch is in the 'ON' position.
- Check the circuit breaker or fuse for the outlet.
- Water Leaks:
- Tighten all hose connections.
- Inspect O-rings and seals for damage and replace if necessary.
- Pulsating Spray:
- This often indicates air in the pump. Re-prime the unit as described in Section 4.3.
- Check for restrictions in the water inlet hose or a clogged nozzle.
If the problem persists after attempting these solutions, contact customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | DE-T356PRO |
| Power Source | Corded Electric |
| Motor Power | 1200W |
| Maximum Pressure | 1885 PSI |
| Maximum Water Flow | 480 L/H |
| Hose Length | 8 Meters |
| Product Dimensions (LxWxH) | 28 x 15 x 35 cm |
| Item Weight | 4.99 kg |
| Color | Green |

Image 8.1: Key performance specifications of the pressure washer.
9. Warranty and Support
Your DEWINNER 1200W Electric Pressure Washer is covered by a manufacturer's warranty, details of which are typically provided with your purchase documentation. Please refer to the warranty card or contact the retailer for specific terms and conditions.
For technical support, spare parts, or warranty claims, please contact DEWINNER customer service through the contact information provided at the point of purchase or on the official DEWINNER website.