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Fixing a Husqvarna Trimmer Line That Keeps Feeding Out

It’s frustrating to deal with a Husqvarna trimmer line that keeps feeding out. 

Whether you’re a seasoned gardener or a novice, this issue can disrupt your trimming tasks and leave you scratching your head.

So, how do you fix a trimmer line that keeps unraveling? The most common troubleshooting tip is to replace the trimmer’s old-quality string that has become brittle with a high-quality one.

However, other culprits, such as a worn-out lever or weakened spool, may cause your gardening tool to unravel. 

Here are step-by-step instructions on how to stop a Husqvarna trimmer from unraveling. 

Causes and Solutions of Husqvarna Trimmer Line That Keeps Feeding Out

Here are the explanations of why this issue keeps happening and how to stop a Husqvarna trimmer from feeding out:

1. Worn-out Lever in the Trimmer Head

Some trimmer heads have a small plastic lever inside that helps control the amount of line that comes out. 

This little lever can get smoothed out after a lot of wear and tear, thus making the Husqvarna trimmer line to unravel. If you suspect the Husqvarna trimmer line lever is the problem, you need to:

  • Inspect the lever for wear and friction points.
  • Apply a small amount of lightweight oil to lubricate pivot points.
  • Manually test the lever movement and identify any issues.
  • Gently bend the lever to allow free movement.
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If the trimmer line lever cannot be fixed, replace it with a new one, as seen in the video below. Assemble back the Husqvarna trimmer line parts and check if the line feed functionality is restored.

2. Weakened Spool Spring

A coiled metal spring fitted in the trimmer head keeps pressure on the line spool and other parts. This helps control how the line feeds out.

Springs eventually wear out and lose their squeezing power. When the spring gets too weak, the correct pressure is lost. Here is how to fix a weakened spool spring on a trimmer line:

  • Remove the trimmer head housing
  • Inspect the spring coils for looseness or damage.
  • Lightly stretch the spring by pulling on the ends to tighten the coils.
  • Replace the spring if the trimmer line keeps feeding out and is badly tangled or damaged.

3. Damaged Bump Head Cap

Many trimmers have a plastic cap on the head that you “bump” on the ground to feed more lines out. 

If your Husqvarna trimmer keeps coming out, the bump head cap might be damaged. To fix this issue:

  • Inspect the cap for cracks or warping.
  • Gently flex the cap slowly to loosen the hardened plastic.
  • Apply a small amount of super glue to the cracked edges.
  • Hold securely in place until bonding is complete.
  • If the cap is significantly damaged and cannot be fixed, replace it with a new one.
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4. Incorrect String Line Diameter on Spool

Check the thickness and diameter of the line in the spool
Check the thickness and diameter of the line in the spool. Image:

The Husqvarna trimmer manufacturer recommends using only a certain line thickness for various applications. For instance, when dealing with short grass, you are supposed to use 1.5mm. 

Using a line thinner or thicker than recommended can prevent smooth feeding. The line can slip, tangle, or jam inside the head. 

Once you have identified the string line diameter is the reason why the trimmer line keeps feeding out, do the following: 

  • Compare the manufacturer’s recommendation for your trimmer model and application.
  • Set the thickness to the correct value and test.
  • If there is no change, purchase a replacement string line of the recommended thickness.
  • Remove the old line from the spool and replace it with a new one.

Other times, the quality of the string line may make your trimmer line to feed out. In this case, you must replace the old line with a new one.

In addition, properly winding the string line onto the spool is crucial to prevent tangling and knotting, which ultimately causes your Husqvarna trimmer to unravel during use.

5. Damaged Trimmer Head

The plastic trimmer head holds all the essential parts in place. But after years of wear, the head itself might crack or warp. 

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When that happens, the pieces inside won’t align correctly or work like they should. To fix this, you will need to:

  • Gently flex the plastic to identify any structural weaknesses.
  • If badly damaged, purchase a replacement trimmer head.
  • If there are minor issues, apply super glue to the cracks to reinforce them.
  • Reassemble internal parts and ensure proper alignment.

If your trimmer line runs out so fast, even after troubleshooting, contact Husqvarna for assistance

You should also contact support if your trimmer is still under warranty. Making repairs that require opening internal components automatically voids the warranty.