MYTOL 20V Cordless 12-Inch String Trimmer/Edger User Manual
Model: MGT2012
Brand: MYTOL
Introduction
Thank you for choosing the MYTOL 20V Cordless 12-Inch String Trimmer/Edger. This manual provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your new tool. Please read this manual thoroughly before first use and keep it for future reference. Proper use and care will ensure optimal performance and extend the life of your product.
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.
- Read All Instructions: Familiarize yourself with the controls and proper use of the tool.
- Wear Eye Protection: Always wear safety glasses or goggles when operating the trimmer/edger.
- Wear Appropriate Clothing: Long pants, long sleeves, and sturdy footwear are recommended. Avoid loose clothing or jewelry that could get caught in moving parts.
- Keep Area Clear: Ensure the work area is clear of other people, children, and pets.
- Inspect Before Use: Check for damaged parts, loose fasteners, or any other condition that may affect safe operation.
- Use Correct Line: Only use the specified cutting line for this product.
- Avoid Wet Conditions: Do not operate the tool in wet grass or damp conditions.
- Remove Battery When Not in Use: Always remove the battery pack when adjusting, cleaning, or storing the tool.
- Maintain Balance: Keep proper footing and balance at all times.
Package Contents
Verify that all items are present upon unpacking:
- MYTOL 20V Cordless String Trimmer/Edger Unit
- 20V 2.0Ah Li-Ion Battery Pack
- Battery Charger
- Replacement Spool Line (1.6mm)
- Safety Guard
- Support Wheel
- Auxiliary Handle
- Instruction Manual
Product Features
- 2-in-1 Functionality: Easily converts from a string trimmer to a wheeled edger.
- 12-Inch Cutting Diameter: Provides efficient trimming performance.
- Automatic Line Feed (AFS Technology): Automatically feeds the cutting line as needed.
- Cordless Operation: Powered by a 20V 2.0Ah Li-Ion battery for freedom of movement.
- Lightweight Design: Weighs 4.6 pounds for easy handling.
- Detachable Body: Allows for space-saving storage.
- Telescopic Handle: Adjustable D-shaped auxiliary handle for comfortable use in various positions.
- Protection Ring: Helps prevent damage to plants and hard objects.
- Adjustable Trimmer Head: Pivots from 0-90 degrees for versatile cutting angles.
Setup
Follow these steps to assemble your MYTOL String Trimmer/Edger:
- Install the Front Handle: Press the handle fastener and adjust the angle of the front handle to your preference. Ensure the teeth of the handle meet the teeth of the adjustment lock for secure positioning.
- Install the Safety Guard: Push the safety guard onto the motor housing, ensuring it latches correctly. Tighten the screw to secure it.
- Install the Support Wheel: Match the three corresponding holes on the support wheel assembly with the motor housing and tighten the screws.
- Install the Battery: Slide the 20V 2.0Ah battery pack into the battery slot on the main handle until it clicks into place. Ensure it is fully seated.
For a visual guide on assembly, please refer to the video below:
Video: MYTOL 20V String Trimmer/Edger Assembly and Feature Overview. This video demonstrates the installation of the front handle, safety guard, support wheel, and battery, as well as the 2-in-1 conversion and safety features.

Image: Labeled diagram of the MYTOL 20V Cordless String Trimmer/Edger, highlighting key components and their functions.
Operating Instructions
Before operating, ensure the battery is fully charged and securely installed. Always wear appropriate safety gear.
- Starting the Trimmer: Press and hold the lock-off safety switch, then squeeze the switch trigger to start the tool. Release the safety switch once the tool is running.
- Adjusting the Trimmer Head Angle: Press the pivot button to set the trimmer head to the desired tilt (0-90 degrees). Release the pivot button to lock the handle into position and fix the angle.
- Converting to Edger Mode: Pull the lock for the rotatable motor head. Turn the handle through 90 or 180 degrees until it locks into the edging position. The pre-installed rubberized wheel will support and guide the edger for straighter lines.
- Trimming Technique: Hold the trimmer firmly with both hands. Swing the trimmer from side to side, keeping the cutting line parallel to the ground. Use the protection ring to avoid damaging plants or hard surfaces.
- Edging Technique: In edger mode, guide the wheel along the edge of your lawn or pathway. Move slowly and steadily for a clean cut.
- Stopping the Trimmer: Release the switch trigger to turn off the tool.

Image: The MYTOL 20V Cordless String Trimmer in action, demonstrating its use for general grass trimming.

Image: Visual representation of the 2-in-1 functionality, showing the tool used for both trimming and edging.
Maintenance
Regular maintenance ensures the longevity and efficiency of your tool. Always remove the battery before performing any maintenance.
- Cleaning: After each use, clean the tool with a damp cloth. Remove any grass clippings, dirt, or debris from the motor housing, safety guard, and cutting head. Do not use harsh chemicals or abrasive cleaners.
- Line Replacement: When the cutting line wears down, replace it with a new 1.6mm diameter line. Refer to the product diagram for proper spool installation.
- Battery Care: Store the battery in a cool, dry place away from direct sunlight and extreme temperatures. Charge the battery fully before storage and periodically during long storage periods to maintain its health.
- Inspection: Periodically check all screws and fasteners for tightness. Inspect the cutting line and spool for wear or damage.
Troubleshooting
If you encounter issues with your trimmer/edger, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not charged or improperly installed; Safety switch not engaged; Trigger not pressed. | Charge battery and ensure proper installation; Press and hold safety switch before pressing trigger. |
| Poor cutting performance | Worn or incorrect cutting line; Cutting too much material at once. | Replace cutting line with 1.6mm line; Take smaller passes. |
| Motor stops during operation | Battery charge low; Overload protection activated. | Recharge battery; Reduce load on the motor. |
| Line does not feed automatically | Line tangled or jammed; Spool empty. | Inspect and untangle line; Replace spool. |
Specifications
| Feature | Specification |
|---|---|
| Brand | MYTOL |
| Power Source | Battery Powered |
| Color | Green |
| Cutting Width | 12 Inches |
| Product Dimensions (L x W) | 12"L x 6"W |
| Speed | 8500 RPM |
| Battery Type | 1 Lithium Ion battery (included) |
| Style Name | String Trimmer |
| Required Assembly | Yes |
| Included Components | Battery Pack, Replacement Spool Line |
| UPC | 786833880759 |
Warranty and Support
MYTOL is committed to providing reliable tools and excellent customer experience. While specific warranty details are not provided in this manual, please contact the MYTOL Support Team for any product-related inquiries, technical assistance, or warranty claims. Keep your purchase receipt as proof of purchase.
For further assistance, please visit the official MYTOL store or contact customer service through your retailer.