Introduction
This manual provides essential information for the installation, operation, and maintenance of your ALM Spool and Line Spool Cover Kit, model MC489. This kit is designed as a replacement part for specific MacAllister string trimmer models, ensuring optimal performance and extending the life of your gardening tool.
Please read these instructions carefully before attempting to install or use the product to ensure proper fit and function.
Product Overview
The ALM Spool Cover Kit MC489 includes a pre-wound spool with trimmer line and a durable spool cover. These components work together to protect the trimmer line and facilitate its smooth feeding during operation.

The kit is designed for easy replacement, allowing users to quickly restore their trimmer's cutting capability.
Compatibility
This ALM Spool Cover Kit (MC489) is specifically designed to fit the following MacAllister string trimmer models:
- MacAllister MGT600
- MacAllister GTB2-600
Important Note: This kit is not compatible with the MacAllister MGTP600 model. For the MGTP600, please use the ALM MC490 kit.
Setup Instructions (Spool and Cover Replacement)
Before beginning, ensure your string trimmer is unplugged from the power source or has its battery removed to prevent accidental startup.
- Remove Old Spool Cover: Locate the existing spool cover on the trimmer head. Depending on your trimmer model, there may be tabs to press or a twisting motion required to release the cover. Carefully remove the old cover.
- Remove Old Spool: Once the cover is off, lift out the old trimmer line spool from the trimmer head. Dispose of the old spool and line responsibly.
- Clean Trimmer Head: Inspect the trimmer head for any debris, dirt, or tangled line. Clean the area thoroughly to ensure the new spool and cover fit correctly and operate smoothly.
- Install New Spool: Take the new ALM spool (pre-wound with line) and align it with the spindle inside the trimmer head. Ensure the line is threaded through the eyelet or guide hole on the trimmer head, if applicable. The spool should sit securely in place.
- Install New Spool Cover: Place the new ALM spool cover over the installed spool. Align any tabs or grooves on the cover with the corresponding slots on the trimmer head. Press down firmly or twist until the cover clicks securely into place. Ensure it is fully seated and cannot be easily dislodged.
- Verify Installation: Gently pull on the trimmer line to ensure it feeds freely. Reconnect the trimmer to its power source (plug in or insert battery) and briefly test the trimmer to confirm the line feeds correctly.
Operating Instructions (General Use)
Once the new spool and cover are installed, operate your MacAllister trimmer as per its original manufacturer's instructions. The ALM spool and cover are designed to function seamlessly with the trimmer's existing line feeding mechanism.
- Line Feeding: Most MacAllister trimmers feature an automatic or bump-feed line advancement system. The ALM spool is compatible with these systems.
- Optimal Performance: For best cutting performance, ensure the trimmer line is always at the correct length.
- Safety: Always wear appropriate personal protective equipment (PPE), including eye protection, long pants, and sturdy footwear, when operating a string trimmer.
Maintenance
Regular maintenance of your trimmer head and spool cover will ensure longevity and efficient operation.
- Cleaning: After each use, disconnect the trimmer from power and clean any grass clippings, dirt, or debris from the spool cover and trimmer head area. This prevents buildup that can impede line feeding.
- Inspect for Wear: Periodically inspect the spool cover for cracks, excessive wear, or damage. A damaged cover can affect line feeding and expose internal components. Replace the cover if significant wear or damage is observed.
- Line Condition: Check the trimmer line for fraying or excessive wear. Replace the spool when the line is depleted or if it becomes brittle.
Troubleshooting
Here are some common issues and their potential solutions related to the spool and cover:
| Problem | Possible Cause | Solution |
|---|---|---|
| Line not feeding | Spool cover not seated correctly; Line tangled or jammed; Debris in trimmer head; Incorrect line winding on spool. | Ensure cover is securely latched; Remove cover and untangle line; Clean trimmer head thoroughly; Rewind line if necessary (though ALM spools are pre-wound). |
| Spool cover falls off | Cover not installed correctly; Latching tabs/clips are worn or broken. | Re-install cover, ensuring it clicks into place; If tabs are broken, the cover needs replacement. |
| Excessive line breakage | Old/brittle line; Cutting against hard surfaces; Damaged eyelet on trimmer head. | Replace spool with new line; Avoid hitting hard objects; Inspect trimmer head eyelet for burrs and smooth if possible. |
If issues persist, consult your MacAllister trimmer's original user manual or contact ALM customer support.
Specifications
| Feature | Detail |
|---|---|
| Product Name | ALM Spool And Line Spool Cover Kit |
| Model Number | MC489 |
| Brand | ALM |
| Compatible Trimmer Models | MacAllister MGT600, GTB2-600 |
| Package Dimensions | 6.46 x 4.57 x 1.73 inches |
| Item Weight | 3.17 ounces |
| ASIN | B01EXHGSTM |
Warranty Information
Specific warranty details for the ALM Spool Cover Kit MC489 are not provided in this manual. For information regarding product warranty, please refer to the packaging or contact ALM directly through their official website or customer service channels.
Customer Support
For further assistance, technical support, or inquiries regarding the ALM Spool Cover Kit MC489, please visit the official ALM website or contact their customer service department. Contact information can typically be found on the product packaging or the manufacturer's website.
When contacting support, please have your product model number (MC489) and any relevant purchase details ready.





