what size star screwdriver to take clutch out of stihl 56 weed trimmer

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If you’re like me, you’ve probably been wondering what size star screwdriver you need to take the clutch out of a STIHL 56 weed trimmer. Well, wonder no more! I did some research and found out that you need a T20 Torx screwdriver.

Now that you know the answer, you can go about your day and cross one thing off of your to-do list.


Most screws used on small engines are 5/16-inch hex-head or 3/8-inch hex-
head. Use the correct size driver tip for the screw to avoid damaging it. Also,
make sure the driver tip is securely locked in the socket or handle before
attempting to turn the screw.

Tools Needed

You will need the following tools to complete this repair:
-A Phillips head screwdriver
-A medium sized flat head screwdriver
-A small hammer
-A star screwdriver

Step-by-step guide

Assuming you have all the necessary tools, the process of taking the clutch out of your Stihl 56 weed trimmer is relatively straightforward. Here’s a step-by-step guide:

1. First, detach the spark plug lead to prevent the engine from accidentally starting while you’re working on it.

2. Next, remove the air filter box by unscrewing the two screws that hold it in place.

3. Once the air filter box is removed, you should be able to see the recoil starter assembly. Unscrew the four screws that hold it in place, and then carefully remove it from the engine.

4. With the recoil starter assembly out of the way, you should now be able to see the clutch cover. Unscrew the four screws that hold it in place, and then remove it from the engine.

5. With the clutch cover removed, you can now see the clutch itself. Simply unscrew the central screw (using a star screwdriver) and then pull off the clutch cover plate. The clutch is now free from the engine!

Safety Precautions

Before starting any repair or maintenance work on your Stihl 56 weed trimmer, it’s important to review some basic safety precautions. Depending on the nature of the repair, you may be working with small parts, sharp tools and/or flammable fluids, and it’s important to take precautions to avoid injury. Here are some basic safety tips to keep in mind:

-Read the manufacturer’s instructions carefully before beginning any repair work.
-Wear appropriate safety gear, including gloves, eyewear and a dust mask.
-Keep tools and parts organized and in good condition to avoid injury.
-Be aware of your surroundings and take appropriate precautions to avoid injuries.
-Do not smoke while working on your Stihl 56 weed trimmer.

Tips and Tricks

Assuming you have the same size screws that I do, I would recommend using a #2 Phillips head screwdriver. The blades on these are perfectly sized to fit into the screws and should allow you to remove them with ease.

Common Mistakes

Stihl weed trimmers are unique because they use a star-shaped clutch to secure the string spool to the trimmer head. The star design prevents the spool from coming loose while you’re trimming, but also makes it more difficult to remove when you need to replace the line. Many people try to use a regular screwdriver to remove the clutch, but this often damages the head or round part of the star, making it even more difficult to remove in the future. Luckily, there are special star screwdrivers that fit perfectly into the head, making removal a breeze.


-What size star screwdriver do I need to take the clutch out of my Stihl 56 weed trimmer?
-Where can I find a replacement part for my Stihl 56 weed trimmer?
-Can I purchase a parts manual for my Stihl 56 weed trimmer?


After performing the steps outlined in this guide, you will have successfully taken out the clutch from your Stihl 56 weed trimmer.


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