Product Overview
The DEWALT 20V MAX* XR String Trimmer (DCST920B) is designed for efficient and powerful trimming of grass and overgrowth. It features a high-efficiency brushless motor and a patented gear drive design for amplified torque. Its lightweight and ergonomic design ensures comfortable use and reduced user fatigue.
- 13-inch cutting swath with 0.080-inch line for effective trimming.
- High-efficiency brushless motor maximizes run time and motor life.
- Patented gear drive design powers through tough overgrowth.
- Lightweight and ergonomic design for enhanced control and reduced strain.
- Variable trigger with Hi/Lo speed control for precise power management and extended runtime.
- Part of the versatile DEWALT 20V MAX* system of tools.
Important Safety Information
WARNING: Always wear eye protection, long pants, and sturdy shoes when operating the string trimmer. Keep bystanders and pets at a safe distance. Never operate the tool without proper safety gear.
- Read and understand all instructions before operating the tool.
- Ensure the battery pack is fully charged before use.
- Inspect the trimmer for any damaged parts before each use.
- Do not operate in wet conditions or near electrical wires.
- Keep hands and feet away from the cutting line.
Setup
1. Assembly
The DEWALT DCST920B string trimmer typically requires minimal assembly. Ensure all components are securely fastened before first use. Refer to the included quick start guide for detailed assembly steps if necessary.
2. Battery Installation
- Ensure the battery pack is fully charged using a compatible DEWALT 20V MAX* charger.
- Align the battery pack with the battery port on the trimmer handle.
- Slide the battery pack into the port until it clicks securely into place.
3. Adjusting the Auxiliary Handle
The auxiliary handle can be adjusted for optimal comfort and balance. Loosen the handle clamp, position the handle to your desired comfort, and then securely tighten the clamp.
4. Loading Trimmer Line
The trimmer features a bump feed head for easy line advancement. To load new line:
- Ensure the trimmer is off and the battery is removed.
- Locate the two buttons on either side of the trimmer head cover. Press these buttons to remove the cover.
- Follow the instructions on the spool for winding new 0.080-inch trimmer line.
- Replace the cover, ensuring it clicks securely into place.
Operating Instructions
1. Starting and Stopping
- To start, press the safety button on the top of the handle with one hand.
- While holding the safety button, squeeze the variable speed trigger with your other hand. The cutting head will begin to spin.
- To stop, release the variable speed trigger.
2. Speed Control
The trimmer features a Hi/Lo speed control switch located on the top of the handle. Use the 'Lo' setting to conserve battery life for lighter trimming tasks, and switch to 'Hi' for powering through dense overgrowth.
3. Trimming Techniques
- Maintain a comfortable stance and hold the trimmer firmly with both hands.
- Use a sweeping motion, moving the trimmer from side to side to cut grass.
- For best results, cut short sections at a time, especially in thick grass.
- Avoid hitting hard surfaces, rocks, or fences to prevent damage to the line and trimmer head.
Maintenance
1. Cleaning
After each use, ensure the trimmer is off and the battery is removed. Clean the cutting head and shield of any grass clippings, dirt, or debris. Use a damp cloth to wipe down the tool's exterior. Do not use harsh chemicals or abrasive cleaners.
2. Line Replacement
Regularly inspect the trimmer line for wear and tear. Replace the line when it becomes too short or damaged. Refer to the "Loading Trimmer Line" section under Setup for instructions.
3. Storage
Store the trimmer in a dry, secure location away from direct sunlight and extreme temperatures. Ensure the battery is removed before long-term storage. Keep out of reach of children.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not start or has low power. | Battery not charged or improperly installed. Motor or gears jammed. | Ensure battery is fully charged and securely installed. Remove battery and clear any debris from the cutting head and motor area. If the motor feels gritty or jammed, professional service may be required. |
| Line does not advance. | Line is too short, tangled, or spool is empty. | Tap the trimmer head firmly on the ground while operating to advance line. If unsuccessful, remove battery, remove head cover, and manually untangle or replace line. |
| Excessive vibration. | Damaged cutting line or head. Loose components. | Inspect cutting line for damage and replace if necessary. Check all screws and fasteners for tightness. |
Specifications
- Brand: DEWALT
- Model: DCST920B
- Power Source: Battery Powered (20V MAX*)
- Cutting Width: 13 inches
- Line Diameter: 0.080 inches
- Item Weight: 8.5 lbs (with 20V MAX* 5.0Ah battery) / 12.1 pounds (product only)
- Product Dimensions: 35.63"L x 10.75"W
- Speed: 7000 RPM (Hi setting)
- Assembly Required: No (minimal assembly upon first use)
- UPC: 885911461269
Warranty and Support
DEWALT provides a limited warranty for this product. For detailed warranty information, service, or to purchase replacement parts, please refer to the official DEWALT website or the User Guide (PDF) provided with your product. You can also visit the DEWALT Store on Amazon for additional resources.
A digital copy of the User Guide is available at: https://manuals.plus/m/b9c164ccb3496537432c9a183890a87464d6f7f6c58fb0fd3fa4d63fcb5ea6e3
