Introduction
This manual provides essential information for the safe and efficient operation, assembly, maintenance, and troubleshooting of your Kobalt 24 Volt -12in String Trimmer. Please read this manual thoroughly before using the product and retain it for future reference.
Important Safety Instructions
Always follow these safety guidelines to prevent injury or damage:
- Wear eye protection. Always use safety glasses or goggles that comply with applicable standards when operating the string trimmer.
- Keep bystanders away. Ensure that all persons and pets are at a safe distance (at least 50 feet) from the operating area.
- Do not touch the cutting area while in operation. The trimmer line rotates at high speed and can cause severe injury. Always wait for the line to stop completely before inspecting or clearing debris.
- Inspect the work area for objects that could be thrown or entangled in the cutting line.
- Do not operate the trimmer in wet conditions or in the presence of flammable liquids or gases.
- Ensure the battery pack is fully charged before use and removed when not in use or during maintenance.
Product Overview
The Kobalt 24 Volt -12in String Trimmer is a cordless, battery-powered tool designed for trimming and edging grass and weeds. Its lightweight design and 12-inch cutting width make it suitable for various lawn care tasks.

Figure 1: Full view of the Kobalt 24 Volt -12in String Trimmer. This image shows the complete assembly of the trimmer, including the motor head, shaft, auxiliary handle, and battery housing at the top.
Package Contents
Verify that all items are present upon unboxing:
- Kobalt 24 Volt -12in String Trimmer Unit
- Auxiliary Handle
- Guard Assembly
- Owner's Manual
Note: Battery and charger are not included with this model and must be purchased separately. Ensure you use compatible Kobalt 24 Volt battery packs and chargers.
Setup and Assembly
1. Attaching the Guard Assembly
- Align the guard assembly with the slots on the trimmer head.
- Push the guard firmly until it clicks into place. Ensure it is securely fastened.
2. Installing the Auxiliary Handle
- Loosen the knob on the auxiliary handle.
- Slide the handle onto the trimmer shaft to a comfortable operating position.
- Tighten the knob securely to fix the handle in place.
3. Battery Installation (Battery Sold Separately)
- Ensure the trimmer is turned off.
- Align the ribs on the battery pack with the grooves in the trimmer's battery port.
- Slide the battery pack into the port until it locks securely.
- To remove, press the battery release button and slide the battery out.
Operating Instructions
Starting the Trimmer
- Ensure the battery is fully charged and securely installed.
- Hold the trimmer firmly with both hands.
- Press the safety lock-out button, then squeeze the trigger switch to start the trimmer.
- Release the safety lock-out button once the trimmer starts.
Trimming and Edging
- Trimming: Hold the trimmer at a slight angle to the ground, allowing the tip of the line to do the cutting. Move the trimmer in a sweeping motion from side to side.
- Edging: Rotate the trimmer head 90 degrees (if applicable to your model) or tilt the trimmer to use the line vertically along sidewalks or driveways.
- Maintain a steady pace and avoid forcing the trimmer into thick vegetation.

Figure 2: Close-up view of the Kobalt 24 Volt -12in String Trimmer in operation, demonstrating its use for edging along a concrete path. The image highlights the cutting head and the protective guard.
Stopping the Trimmer
Release the trigger switch to stop the trimmer. The cutting line will stop rotating within a few seconds.
Maintenance
Cleaning
- Always remove the battery pack before cleaning.
- Use a damp cloth to wipe down the exterior of the trimmer. Do not use harsh chemicals or abrasive cleaners.
- Clear any grass clippings or debris from the guard and cutting head.
Replacing the Trimmer Line
Refer to your specific model's instructions for detailed steps on replacing the trimmer line. Generally, this involves:
- Remove the battery.
- Remove the spool cap and old line.
- Wind new line onto the spool according to the directional arrows.
- Reassemble the spool and cap.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not start. | Battery not installed correctly or discharged. Safety lock-out not engaged. | Ensure battery is fully charged and properly seated. Press safety lock-out button before trigger. |
| Trimmer line does not advance. | Line tangled or too short. Spool jammed. | Remove battery, clear any tangles, or replace line. Clean spool area. |
| Excessive vibration. | Damaged or unbalanced cutting line. Loose components. | Replace cutting line. Check all fasteners and tighten if necessary. |
Technical Specifications
| Feature | Detail |
|---|---|
| Brand | Kobalt |
| Model Number | Kobalt |
| Power Source | Battery Powered (24 Volt) |
| Cutting Width | 12 Inches |
| Product Dimensions | 37"L x 12"W |
| Item Weight | 8.58 pounds |
| Assembly Required | Yes |
| Cordless | Yes |
| Recommended Use | Trimming and edging grass and weeds |
| UPC | 653341244567 |
Storage
- Remove the battery pack before storing.
- Store the trimmer in a clean, dry area, away from direct sunlight and extreme temperatures.
- Keep out of reach of children.
Warranty and Customer Support
For warranty information or technical support, please refer to the documentation included with your purchase or contact the manufacturer directly. Keep your proof of purchase for warranty claims.
For additional assistance, you may visit the official Kobalt website or contact their customer service department.





