Why Does My Strimmer Line Keep Breaking?

Picture this. It’s a glorious day, and you’re in the mood for some good old garden maintenance. You get the strimmer out, and the line has broken within a few short minutes.

This happens to all of us. It’s like when you get a flat tire or a kitchen appliance decides to break. But if this seems to continually happen to you, you may be asking yourself, “what am I doing wrong?”

Sticking to this advice will prevent your strimmer cord from breaking unnecessarily.  

Step 1: Keep Your Distance!

If you can’t stop your line from snapping, the problem may be your distance. A common cause of a broken cord is getting too close to sturdy surfaces like paving slabs and rocks. 

I know those weeds in your pavement look tempting, but going at those with your strimmer will likely lead to a line breakage! Why not try a weed killer or pressure washer instead? 

Step 2: Check the Components


Have you recently replaced the line? It’s worth checking what type of line you bought – if it comes from a different manufacturer to the trimmer, this may be your issue. 

Each strimmer manufacturer uses a unique design, so you need to get a line that fits that design.

Check the line thickness, too. There are all sorts of sizes available, ranging from 1.5 – 3mm. You need to get the size that fits your strimmer. 

Your best bet is to look at the instructions that came in your strimmer’s box. This will tell you everything you need to know about what strimmer line to buy!

Step 3: Give Your Strimmer a Clean

You can’t go wrong with a good clean. Cleaning your strimmer of dirt and debris will not only improve its effectiveness but reduce the likelihood of line breakages, too. 

The most crucial part to check is the strimmer head, where the line is. Get rid of anything that’s hanging around here, like old grass clippings or dirt. And make sure the line is clear! A choked line mechanism does not work well!

Step 4: Loosen a Taut Line

If your line has no slack, it’s more likely to break. That’s because it has no give – no flexibility. Slackening your trimmer line will lessen the likelihood of frequent breakages. 

Step 5: Consider its Age


Like any well-used tool, a strimmer will suffer from general wear and tear over time. The parts may begin to malfunction, which could fracture the line. Consider investing in new elements; maybe a new spool?

Additionally, if you keep your strimmer in an outbuilding such as a shed or garage, the line will likely deteriorate over time. Nylon line doesn’t like the cold weather, you see!

Step 6: Shorten a Long Line

The line will break more often if it’s too long. You can’t control what a long line comes into contact with, so you’ll find it begins to hit unforgiving objects like walls. And we know from step 1 that this is bad news! 

The majority of trimmers do have a component that cuts a long line. But it’s worthwhile checking because yours might not! 

Step 7: Lengthen a Short Line

It’s not just a long line that causes issues. A line that’s too short is equally as likely to break. The cord has to spin with enough force to cut the grass. The spinning power won’t exceed the grass’s strength if the line is excessively short. The grass will just slice the line rather than the other way around. 

Keep your trimmer line at a consistent 8 inches long. This is the perfect length to prevent breakages!

Step 8: Buy a Better Quality Replacement


Purchasing a high-quality line is vital. Like anything, the cheaper the product, the more likely it is to break. Low price = low quality.

When buying a strimmer line, choose a round cut. A star cut also works well as a second choice. Try to avoid square-cut lines if possible; this is the weakest type of trimmer line. 

Get a line that’s already on a reel. This saves you the time of having to roll it, and it reduces the likelihood of damage caused in the process. 

A thicker line is typically better. But revert back to step 2. Ensure that any line you buy is recommended by the manufacturer. Otherwise, you’ll just end up with an easily breakable line again.  

Final Remarks

You’re sick of your strimmer line breaking, and rightly so. There’s nothing worse than having to stop gardening just because of a defective strimmer line.

I’m sorry to say, it may not be the strimmer’s fault. To keep your strimmer line going for a reasonable amount of time, steer clear of hard surfaces like walls and paving slabs. 

Give your trimmer a thorough clean if you’ve noticed dirt and debris on it, as this is likely to cause cord breakages. And while you’re at it, check the line length. Loosen it if it’s taut, and maintain an 8-inch length at all times. 

Consider you may need a replacement, and always, always stick to the manufacturer’s recommendations! Snatch up a higher-quality alternative if there’s one they suggest.

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