Mac Allister Strimmer Spool Replacement

Mac Allister Strimmer Spool Replacement: A Complete Guide

If you own a Mac Allister strimmer, the spool that holds the cutting line is one of the most frequently serviced parts. Over time the line can wear out, the spool may become jam‑filled, or the spring tension can weaken. A proper spool replacement restores cutting performance, reduces vibration, and extends the life of your machine. This article walks you through the why, when, and how of replacing the spool on a Mac Allister strimmer, using easy‑to‑follow steps and practical tips.

Why Replace the Spool?

There are three main reasons to replace the spool on a Mac Allister strimmer:

• Line wear or breakage – The cutting line (often called a weed eater line) thins after repeated use, leading to frequent breaks.
• Spring fatigue – The internal spring that pushes the line out can lose tension, resulting in short or uneven line exposure.
• Damage or corrosion – Exposure to moisture, debris, or impact can warp the spool housing, causing misalignment.

When any of these issues appear, a new spool will bring back the smooth, consistent cut that makes Mac Allister strimmers popular among homeowners and professionals alike.

Tools and Materials Needed

Before you begin, gather the following items. All are commonly found in a basic tool kit, and no special equipment is required.

1. Replacement spool – purchase a genuine Mac Allister part or a compatible aftermarket model.
2. Weed eater line – bulk line such as the one listed at https://amzn.to/3h2hg5r works well for most models.
3. Flat‑head screwdriver or small Allen key (if your model uses set screws).
4. Protective gloves – to keep hands clean from sharp line fragments.
5. Clean rag – for wiping excess debris from the head.

Step‑by‑Step Spool Replacement

Follow this simple sequence to replace the spool quickly and safely.

1. Turn off the engine. Disconnect the spark plug wire or remove the battery (for electric units) to prevent accidental start‑up.
2. Remove the head cover. Most Mac Allister strimmers have a twist‑off or snap‑off cover. Rotate it counter‑clockwise until it releases, then set it aside.