1. Introduction
Thank you for choosing the Huhomco Cordless Pressure Washer DJ-802. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new pressure washer. Please read this manual thoroughly before first use and retain it for future reference.
Image 1.1: Huhomco Cordless Pressure Washer DJ-802 in operation.
2. Safety Instructions
WARNING: Read all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.
- Always wear appropriate personal protective equipment, including safety glasses, gloves, and hearing protection.
- Never point the spray gun at people, pets, or electrical devices. High-pressure spray can cause severe injury.
- Ensure the work area is clear of obstacles and trip hazards.
- Do not operate the pressure washer in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Disconnect the battery pack before making any adjustments, changing accessories, or storing the power tool.
- Keep children and bystanders away while operating the pressure washer.
- Use only manufacturer-specified replacement parts and accessories.
- Do not use the pressure washer if the power cord or battery charger is damaged.
- Always hold the spray gun firmly with both hands during operation to control recoil.
3. Package Contents
Verify that all items listed below are included in your package. If any parts are missing or damaged, please contact customer support.
Image 3.1: Included accessories and components.
- Cordless Pressure Washer Unit (Host)
- 2 x 4.0Ah Lithium-Ion Batteries
- Battery Charger
- 6-in-1 Multifunctional Nozzle
- Foam Cannon (Soap Bottle)
- 16.4 FT (5 Meters) Kink-Free Hose
- Water Filter with Weighted Head
- Hose Clamp
- Water Tap Connector
- 3/4 inch Faucet Adapter
- 3/4 inch & 1/2 inch Garden Hose Connectors
- 2 x Transition Connectors
- Stop Valve
- Storage Bag
4. Product Components
Familiarize yourself with the main parts of your Huhomco Cordless Pressure Washer.
Image 4.1: Overview of the pressure washer unit.
- Pressure Washer Unit (Host): The main body containing the brushless motor and pump.
- Brushless Motor: Provides 400W power and 20000 RPM for efficient cleaning.
- Battery Pack: Two 21V 4.0Ah Lithium-Ion batteries provide extended runtime.
- 6-in-1 Nozzle: Offers multiple spray patterns (0°, 15°, 25°, 40°, Foam, Shower).
- Foam Cannon: Attaches for applying detergent.
- Water Inlet: Connection point for the water supply hose.
- Trigger: Activates the water spray.
- Control Panel: Features mechanical buttons for 3-speed pressure control and power display.
- Water Hose: 16.4 ft (5 meters) kink-free hose for water intake.
Image 4.2: High-speed brushless motor details.
Image 4.3: Battery and charging information.
5. Setup
5.1 Battery Charging and Installation
- Connect the charger to a standard power outlet.
- Insert the battery into the charger. The indicator light on the charger will show the charging status.
- Allow 3-4 hours for a full charge. Once charged, remove the battery from the charger.
- Align the charged battery with the battery slot on the pressure washer unit and slide it in until it clicks securely into place.
5.2 Water Source Connection
The pressure washer supports multiple water sources:
- From a Faucet: Use the appropriate faucet adapter (3/4 inch or 1/2 inch) and water tap connector to connect the hose to a standard faucet.
- From a Garden Hose: Connect the 3/4 inch & 1/2 inch garden hose connectors to your garden hose and then to the pressure washer's water inlet.
- From a Bucket, Pool, or River: Attach the weighted filter head to one end of the 16.4 FT hose and submerge it into the water source. Connect the other end of the hose to the pressure washer's water inlet. The filter prevents debris from entering the pump.
Image 5.1: Connecting to a faucet.
Image 5.2: Connecting to a garden hose.
Image 5.3: Drawing water from an external source with filter.
5.3 Assembling the Nozzle and Wand
- Ensure the pressure washer unit is off and the battery is removed.
- Attach the extension wand to the pressure washer unit by pushing and twisting until it locks.
- Attach the 6-in-1 nozzle or foam cannon to the end of the extension wand.
6. Operating Instructions
6.1 Powering On and Priming
- Ensure the battery is securely installed and the water source is connected.
- Press the power button on the control panel to turn on the unit.
- Before spraying, hold the trigger for a few seconds to allow water to flow through the system and expel any air. This primes the pump.
6.2 Selecting Pressure Modes
The pressure washer features a 3-speed mechanical control panel for precise pressure adjustment.
Image 6.1: 3 Pressure Modes.
- Low Level (700 PSI): Ideal for gentle rinsing, watering plants, or light cleaning tasks.
- Mid Level (900 PSI): Suitable for general cleaning, such as vehicles or outdoor furniture.
- High Level (1200 PSI): For tackling stubborn dirt, grime, and tough stains on driveways or patios.
Use the dedicated mechanical buttons on the control panel to cycle through the pressure settings.
6.3 Using the 6-in-1 Nozzle
The 6-in-1 nozzle allows you to quickly switch between various spray patterns. Always switch the nozzle only when the machine is off to prevent leaks or damage.
Image 6.2: 6-in-1 Nozzle spray patterns.
- 0° (Pencil Jet): A concentrated, high-impact stream for tough spots. Use with caution.
- 15° (Narrow Fan): For intensive cleaning of smaller areas.
- 25° (Medium Fan): General purpose cleaning.
- 40° (Wide Fan): For rinsing and cleaning larger, delicate surfaces.
- Foam: For applying detergent when the foam cannon is not used.
- Shower: Gentle spray for watering plants or light rinsing.
6.4 Using the Foam Cannon
The foam cannon is designed for applying a rich layer of detergent for effective cleaning, especially for vehicles.
Image 6.3: Attaching the foam cannon.
- Fill the foam cannon bottle with appropriate pressure washer detergent.
- Ensure the pressure washer is off and the battery is removed.
- Attach the foam cannon to the extension wand.
- Reinsert the battery and turn on the unit.
- Spray the detergent onto the desired surface. Allow it to dwell for a few minutes before rinsing.
6.5 General Usage Tips
- Always test the spray on an inconspicuous area first to avoid damage.
- Maintain a safe distance from the surface being cleaned, especially with higher pressure settings.
- Work from top to bottom when cleaning vertical surfaces.
Image 6.4: Various applications of the pressure washer.
6.6 Instructional Videos
For visual guidance on setup and operation, please refer to the following instructional videos:
Video 6.5: Product Overview and Setup Guide.
Video 6.6: Demonstration of Cleaning Applications.
7. Maintenance
7.1 Cleaning and Storage
- After each use, disconnect the water supply and run the pressure washer briefly to clear any remaining water from the pump and hose.
- Remove the battery pack.
- Clean the exterior of the unit with a damp cloth. Do not use harsh chemicals.
- Clean the water filter regularly to ensure optimal water flow.
- Store the pressure washer and all accessories in the provided storage bag in a dry, frost-free area.
7.2 Battery Care
- Store batteries in a cool, dry place away from direct sunlight.
- Do not store batteries in a discharged state for extended periods. Charge them periodically if not in use.
- Avoid exposing batteries to extreme temperatures.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No water flow or low pressure | Water supply off or restricted Air in the pump Clogged filter Nozzle clogged | Ensure water supply is on and hose is not kinked Prime the pump by holding the trigger until water flows Clean the water filter Clean the nozzle orifice |
| Unit does not turn on | Battery not charged Battery not properly installed Battery or unit fault | Charge the battery fully Reinstall battery securely Contact customer support |
| Water leaks from connections | Loose connections Damaged O-rings or seals | Tighten all connections Inspect and replace O-rings/seals if damaged |
| Motor runs but no water sprays | Air in the system Water inlet blocked | Prime the pump Check water filter and hose for blockages |
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | DJ-802 |
| Brand | Huhomco |
| Max Pressure | 1200 PSI |
| Flow Rate | 3.0 GPM |
| Motor Power | 400W |
| Motor Speed | 20000 RPM |
| Battery Type | Lithium Ion |
| Battery Voltage | 21V (x2 included) |
| Battery Capacity | 4.0Ah (each) |
| Hose Length | 16.4 ft (5 Meters) |
| Product Dimensions | 10.24 x 6.3 x 17.56 inches |
| Item Weight | 7 pounds |
| Color | Gray |
10. Warranty and Support
This Huhomco product is covered by a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included in your package or contact customer support.
If you encounter any issues or have questions regarding your Huhomco Cordless Pressure Washer DJ-802, please contact our customer support team for assistance. Please have your model number (DJ-802) and purchase information ready when contacting support.