1. Product Overview
The SLENJADFIN SC14 Cordless Pressure Washer is a portable, handheld power washer designed for various outdoor cleaning tasks. It features a high-performance 380W pure copper motor, delivering a maximum pressure of 700 PSI and a spraying speed of 4.5L/min. This device is compatible with Makita 18V batteries (battery not included), offering wireless operation for enhanced convenience and mobility.

Figure 1: SLENJADFIN SC14 Cordless Pressure Washer and included accessories.
2. Package Contents
Verify that all items listed below are included in your package:
- Cordless Pressure Washer Unit
- Wand Extension
- 6-in-1 Multi-function Nozzle
- Foam Cannon (Soap Dispenser)
- Water Supply Hose (197 inches / 5 meters)
- Water Filter
- Hose Clamp
- 3/4 inch Threaded Connector (for standard faucets/garden hoses)

Figure 2: All components included in the SLENJADFIN SC14 package.
3. Setup Instructions
3.1 Battery Installation
Ensure the pressure washer is turned off before installing or removing the battery. Align your Makita 18V battery (BL1860, BL1850, BL1840, BL1830, BL1815, etc.) with the battery slot on the bottom of the pressure washer handle. Slide the battery into place until it clicks securely. To remove, press the battery release button and slide the battery out.

Figure 3: The pressure washer is compatible with Makita 18V batteries.
3.2 Water Supply Hose Connection
- Attach the water filter to one end of the 197-inch water supply hose.
- Secure the filter connection with the provided hose clamp to prevent leaks.
- Unscrew the black cap from the water inlet on the pressure washer unit.
- Insert the other end of the water supply hose into the water inlet.
- Screw the black cap back onto the water inlet, ensuring a tight seal.
- Place the filtered end of the hose into your water source (e.g., bucket, lake, river).

Figure 4: The water filter attached to the hose, ready to be submerged in a water source.
3.3 Nozzle and Wand Attachment
- Attach the wand extension to the front of the pressure washer unit by aligning and pushing it until it clicks into place.
- Attach the 6-in-1 multi-function nozzle to the end of the wand extension by aligning and pushing it until it clicks into place.

Figure 5: The 6-in-1 multi-function nozzle attached to the wand extension.
4. Operating Instructions
4.1 Power Settings
The pressure washer features an LED display to indicate power settings. Press the power button to cycle through different power levels. The device offers multiple pressure levels for various cleaning needs.
4.2 Nozzle Settings
The 6-in-1 multi-function nozzle allows you to easily switch between different spray modes by rotating the nozzle head. Available modes include:
- 0° (Direct Stream)
- 15° (Narrow Fan)
- 25° (Medium Fan)
- 40° (Wide Fan)
- Fan Spray
- Shower Mode

Figure 6: Different spray patterns can be selected by rotating the nozzle.
4.3 Foam Cannon Usage
For tasks requiring detergent, attach the foam cannon (soap dispenser) to the pressure washer unit. Fill the foam cannon with your desired cleaning solution. The foam cannon will produce dense foam for effective cleaning.
4.4 Water Source Options
The cordless pressure washer offers flexible water intake options:
- Direct Draw: Use the provided hose and filter to draw water directly from a bucket, river, or lake.
- Faucet Connection: Connect to standard faucets or garden hoses using the included 3/4 inch threaded connector.
4.5 Official Product Video
Video 1: A seller demonstration of the cordless pressure washer's assembly and various functions.
5. Maintenance
- Regularly inspect the water filter for debris and clean as necessary to prevent clogging and maintain optimal performance.
- After each use, rinse the foam cannon thoroughly with clean water to prevent detergent residue buildup.
- Store the pressure washer and all accessories in a dry, protected area when not in use.
6. Troubleshooting
If you encounter issues with your SLENJADFIN SC14 Cordless Pressure Washer, please consider the following:
- No Water Flow: Ensure the water supply hose is fully submerged in the water source and the filter is not clogged. Check all connections for tightness.
- Low Pressure: Verify the battery is fully charged. Ensure the nozzle is correctly attached and rotated to the desired setting. Check the water filter for blockages.
- Leaks: Confirm all hose connections and caps are securely tightened. Inspect O-rings for damage.
For further assistance, please contact SLENJADFIN customer support.
7. Specifications
| Brand | SLENJADFIN |
| Model Number | SC14 |
| Power Source | Battery Powered (Compatible with Makita 18V) |
| Motor Type | 380W Pure Copper Brushless Motor |
| Maximum Pressure | 700 PSI |
| Maximum Flow Rate | 4.5 Liters Per Minute |
| Hose Length | 196.8 Inches (approx. 5 meters) |
| Item Weight | 1 Pound |
| Product Dimensions | 11.8"L x 4.3"W x 8.7"H |
8. Warranty & Support
For any questions regarding the SLENJADFIN SC14 Cordless Pressure Washer, please contact the manufacturer's customer support. Information regarding specific warranty terms may be available through the point of purchase or the manufacturer's official channels.