1. Important Safety Information
Please read and understand all safety warnings and instructions before operating this cordless portable washer. Failure to follow these instructions may result in electric shock, fire, and/or serious injury.
- Personal Safety: Always wear appropriate personal protective equipment, including safety glasses, when operating the pressure washer. Do not direct the spray at people, pets, or electrical devices.
- Electrical Safety: Use only the charger provided with the unit. Do not expose the battery or charger to water or extreme temperatures. Ensure the battery is fully charged before first use.
- Water Source: Ensure your water source is clean and free of debris to prevent clogging the filter and damaging the pump.
- Operation Environment: Operate the pressure washer in a well-ventilated area. Keep children and bystanders away during operation.
- Residual Water: A small amount of residual water inside the unit is normal. This is due to factory pre-shipment pump testing to verify performance, and the product is brand new and never used.
2. Product Overview and Components
The KEPEAK Cordless Portable Washer is designed for efficient cleaning of various outdoor surfaces. It features a powerful brushless copper core motor, a versatile 6-in-1 nozzle, and a foam cannon for enhanced cleaning.
Package Contents:

Figure 2.1: All components included in the box.
- Pressure Washer Unit
- 6-in-1 Adjustable Nozzle
- Foam Cannon
- 0.5A Charger
- Water Filter
- Connector
- 5-Meter Hose (16.4 ft)
- Battery (1 or 2, depending on package)
- Waterproof Hard Case
- User Manual
Key Features:
- High Performance: Equipped with a brushless copper core motor, delivering up to 1450 PSI pressure and 3.0 GPM water flow.
- Cordless Operation: Powered by dual 4.0Ah batteries, offering up to 30 minutes of runtime per charge.
- Versatile Nozzle: 6-in-1 adjustable nozzle for various spray patterns (0°, 15°, 25°, 40°, spray, 45° inclined).
- Portable Design: Lightweight at 2.18 lbs and includes a waterproof hard case for easy transport and storage.
- Multiple Water Sources: Can draw water from buckets, lakes, pools, or a standard tap.
3. Assembly and Setup
Follow these steps to assemble your KEPEAK Cordless Portable Washer:
- Attach the Adapter: Press down on the adapter and attach it tightly to the gun body until it clicks into place.
- Insert Nozzle Rod: Insert the nozzle rod into the front of the gun body and turn it clockwise to tighten securely.
- Connect Water Inlet Hose: Connect the water filter to one end of the 5-meter hose, then connect the other end of the hose to the water inlet on the pressure washer. Ensure all connections are tight to prevent leaks.
- Install Battery: Slide a charged 21V 4.0Ah battery into the battery slot on the bottom of the pressure washer handle until it locks.

Figure 3.1: Easy assembly steps for the pressure washer.
Video: Cordless Pressure Washer Setup and Use
This video demonstrates the assembly process and various applications of the KEPEAK Cordless Portable Washer.
4. Operating Instructions
4.1. Selecting a Water Source
The KEPEAK Cordless Portable Washer can draw water from various sources:
- Bucket: Place the weighted filter end of the hose into a bucket of water.
- Pool/Lake/River: Submerge the weighted filter end of the hose into the water body.
- Water Tap: Connect the hose directly to a standard garden tap using an appropriate adapter (not included).
The weighted filter helps prevent debris from entering the pump, ensuring smooth operation.

Figure 4.1: Options for drawing water from various sources.
4.2. Adjusting the 6-in-1 Nozzle
The 6-in-1 adjustable nozzle allows you to switch between different spray patterns by rotating the nozzle head. Ensure the machine is off before switching the nozzle to prevent accidental spray or leakage.
- 0° (Jet Stream): For concentrated, high-impact cleaning on tough stains.
- 15°, 25°, 40° (Fan Spray): For general cleaning, rinsing, and wider coverage.
- Spray Mode: Gentle spray for watering plants or light rinsing.
- 45° Inclined Mode: Specifically designed for cleaning hard-to-reach areas like car tops and undersides.

Figure 4.2: Various spray patterns from the 6-in-1 nozzle.
4.3. Using the Foam Cannon
The included foam cannon is ideal for applying detergent or soap to surfaces before pressure washing. Fill the foam cannon with your desired cleaning solution, attach it to the pressure washer, and activate the unit to produce thick foam.

Figure 4.3: Using the foam cannon for car cleaning.
4.4. General Operation
Once assembled and connected to a water source, press the trigger to start the water flow. Release the trigger to stop. Always start with a lower pressure setting or a wider spray pattern on delicate surfaces to avoid damage. The pressure washer is suitable for cleaning cars, patios, exterior walls, windows, and garden areas.

Figure 4.4: Various applications of the KEPEAK Cordless Portable Washer.
5. Maintenance and Storage
5.1. After Each Use
- Drain Water: Disconnect the water source and run the pressure washer for a few seconds to clear any remaining water from the pump and hose. This prevents freezing damage in cold weather.
- Clean Filter: Remove and rinse the water filter to clear any trapped debris.
- Clean Unit: Wipe down the exterior of the pressure washer with a damp cloth.
5.2. Battery Care

Figure 5.1: Battery specifications and protection features.
- Charging: Charge the battery fully after each use. The charging time is typically 2-3 hours.
- Storage: Store batteries in a cool, dry place away from direct sunlight and extreme temperatures. For long-term storage, charge the battery to about 50% capacity.
- Protection System: The battery features triple protection against overheat, overload, and low voltage.
5.3. Storage
Store the pressure washer and all its components in the provided waterproof hard case. This protects the unit from dust and damage and keeps all accessories organized. Store in a dry, protected area.
6. Troubleshooting
If you encounter issues with your KEPEAK Cordless Portable Washer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No water pressure or weak pressure |
|
|
| Unit does not turn on |
|
|
| Water leakage |
|
|
If you experience any issues not covered here, or if the problem persists, please contact KEPEAK customer support for assistance.
7. Product Specifications
| Specification | Detail |
|---|---|
| Brand | KEPEAK |
| Model Number | PMGYSQ-30 |
| Power Source | Battery Powered |
| Color | Dark Green |
| Hose Length | 5 Meters (16.4 feet) |
| Product Dimensions (L x W x H) | 16"L x 4"W x 12"H |
| Maximum Flow Rate | 3 Gallons Per Minute (GPM) |
| Maximum Pressure | 1450 Pound per Square Inch (PSI) |
| Battery Type | 21V 4.0Ah Lithium-ion |
| Approximate Runtime | Up to 30 minutes per full charge (with dual batteries) |
| Approximate Charging Time | 2-3 hours |
| Item Weight | 2.18 lbs (unit only) |
8. Warranty and Support
KEPEAK products are manufactured to high-quality standards and are warranted against defects in materials and workmanship. For specific warranty details, including duration and coverage, please refer to the warranty card included with your product or contact KEPEAK customer support.
For technical assistance, troubleshooting, or to inquire about replacement parts, please contact KEPEAK customer service through the retailer where the product was purchased or visit the official KEPEAK website.