How To Repair Your Strimmer

String trimmers, better known as strimmers, are a very useful tool to have in a garden. They allow you to trim difficult edges and tough vegetation very easily. However, sometimes strimmers are prone to problems and need to be repaired. If a repair is beyond your abilities then it is important to entrust it to a professional, but some simple repairs may be well within your scope if you know where to start.

Some of the most common problems with strimmers, and the simple repairs that may remedy them, are:

String Feeding Problems

Many people find that their strimmer is feeding out the string or wire blade excessively. Instead of spinning around and neatly trimming away vegetation, it unravels and ends up all over the lawn. This problem is usually not caused by a fault in the strimmer but rather by the wrong size of wire being used. Try a thicker wire and see if that solves the problem. If it does not, then you should trust a professional to have a look and carry out a repair.

By the same token, a string that refuses to feed may be down to a size that is too thick being used. Try a thinner string to see if this solves the problem. Cleaning the trimmer head, or replacing it if it is broken or heavily worn, might also solve this problem.

Strimmer Not Starting

Another common problem is that a strimmer simply will not start. The likely causes of this depend very much on whether you are using an electric strimmer or a petrol-powered one.

If you are using an electric strimmer, it is highly likely that the problem will be an electrical one. Quite often, this problem is caused by a problem in or around the plug. Your first step in addressing this should be to try to change the fuse for a new one or for one you know to be working, such as a fuse of the same type borrowed from a working device. While you have the plug open, check inside for to see that all the connections are making contact and firmly held in place. If this does not solve the problem, try cutting the wire just below the plug and then either reattaching the same plug or fitting a new one.

If a petrol strimmer fails to start, then the problem is almost certainly going to be within the engine. If the strimmer has been stored for some time with petrol in it, try draining off the old petrol and refilling it with fresh fuel. Petrol loses its potency over time when stored in a small tank. If this does not work, try removing the carburettor and cleaning it. Dirt and gunk from evaporating petrol or impurities can clog up the carburettor, especially when a strimmer has been left unattended for a while, and prevent the engine from starting up. If this does not solve the problem, cleaning the spark plug and resetting the gap might also solve the problem.

Poor Running

Many people find that their petrol strimmer is running poorly after long periods of storage, or that it stops running altogether after a few seconds. The most common causes of this are similar to those of a petrol strimmer that will not run at all. Quite simply, this tends to be down to slightly less extreme cases of the same problems.

As with a strimmer that will not start, first try using fresh petrol. If this fails, remove and clean the carburettor and spark plug, and reset the gap on the plug. If the spark appears to be very weak while the engine is running, consider replacing the spark plug altogether.

It is less common for an electric strimmer to run poorly rather than to just stop running altogether. If you do experience this type of problem with an electric strimmer, it is worth checking or replacing the plug as you would if it didn’t run at all, because it is possible that poor contact is being made and the strimmer is not getting a consistent current. If this does not work, then the problem is likely to be elsewhere and your strimmer will probably require professional attention.

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