Maintaining your Stihl trimmer is crucial for optimal performance and longevity. One of the most common maintenance tasks is restringing. This guide will walk you through the process, regardless of your Stihl trimmer model (although specific steps may vary slightly). Always refer to your owner's manual for model-specific instructions.
Identifying Your Stihl Trimmer Head Type
Before you begin, identify the type of trimmer head you have. Stihl offers several, including:
- AutoCut: These heads automatically feed the line as needed.
- Tap & Go: These heads require tapping the head on the ground to feed the line.
- Manual Feed Heads: These require manual adjustment and line feeding.
The type of head significantly impacts the restringing process. This guide covers the most common types: Tap & Go and AutoCut.
Restringing a Stihl Tap & Go Trimmer Head
Tools You'll Need:
- New trimmer line: Use the correct diameter and type of line specified in your owner's manual. Using the wrong line can damage your trimmer head.
- Measuring Tape or Ruler: To accurately measure and cut the line.
- Gloves: To protect your hands.
Steps:
- Remove the spool cover: Locate the spool cover on your trimmer head and remove it. This usually involves unscrewing it or pressing a release button.
- Remove the old line: Carefully pull out the remaining old line. Sometimes, a small amount of old line may remain on the spool. This is often fine, but removing all of it will make the job smoother.
- Measure and cut the new line: Measure twice the length of the spool's circumference, adding a few extra inches. Your manual will usually specify the exact length needed. Cut the new line to this length.
- Insert the new line: Thread one end of the new line into one of the spool's line entry holes. Then, feed it around the spool's grooves, following the path of the old line. Continue until the entire line is wound onto the spool. Make sure it lies evenly to prevent tangling.
- Secure the line ends: Once the line is fully wound, tuck the ends securely into the designated slots or guides (your manual will show the specific location of these). The line should be tightly held.
- Replace the spool cover: Put the spool cover back on and make sure it's securely attached.
Restringing a Stihl AutoCut Trimmer Head
Tools You'll Need:
- New trimmer line: Use the specified line type and diameter.
- Screwdriver (if needed): Some AutoCut heads require the removal of a cover or cap.
- Gloves: Protect your hands.
Steps:
- Open the trimmer head: Most AutoCut heads have a simple locking mechanism. Follow the instructions in your owner's manual to open the head. Often, this just requires pressing a release button or unscrewing a cap.
- Insert the new line: Insert the new line into the slots provided, feeding it into the grooves according to your specific model. Your manual will show the correct path of the line.
- Close and test: Close the head firmly and secure it properly. Test the trimmer to make sure the line is feeding correctly.
Troubleshooting Common Problems
- Line keeps breaking: You may be using the wrong type or diameter of line, or the line isn't properly seated in the trimmer head. Check your manual for specifications.
- Line is not feeding: The line may be tangled, the trimmer head is not properly assembled, or you have not followed the winding process correctly. Double-check your work and the steps outlined in your manual.
- Line is difficult to feed: This could be due to a damaged trimmer head or old line residue preventing proper feed.
Remember: Always consult your Stihl trimmer's owner's manual for model-specific instructions and safety precautions. Improper restringing can lead to damage or injury. If you are unsure about any aspect of the process, contact a qualified Stihl dealer for assistance.
