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Lawnmower does not start - 7 possible causes and emergency measures


If the lawnmower suddenly fails to start, there can be different reasons. Find out here what it can be and how you can still get the lawnmower started with simple emergency measures.

If the lawnmower suddenly refuses to work Mowing the lawn is not one of the most beautiful garden tasks, but it must be done after all. Some may even enjoy doing a few laps with the mower. The fun fizzles out pretty quickly when the lawnmower suddenly fails to start. This usually happens in situations where you don't have much time anyway, but the lawn urgently needs a cut.

And now? No panic. The problem is often easy to find and fix yourself. Fortunately, many lawn mowers are still built so that you can carry out the most important maintenance and repairs yourself.

Only when nothing works at all and even the specialist doesn't know what to do, then it might make sense to consider buying a new one and to switch to a more modern device. Further developed lawn mowers come onto the market every year, as the lawn mower test on Warenvergleich.de shows just now.

Lawnmower does not start - it can be because of it

Cause 1: missing fuelYou may be smiling at yourself now, but it has just happened too often, so this point should definitely be on this list.Before you start the lawn mower, you should check whether there is still enough fuel in the tank. If necessary, you just have to add a little more.Wrong fuel can also be a reason why the lawn mower can no longer start. Most models fill up with normal gasoline, but there are also lawnmowers that need to be filled with diesel. You are not sure? Then try no further attempts. In the worst case, the engine could be damaged. The manual or the operating instructions will give you precise information about the fuel your lawnmower has to be filled with. If you make a mistake here, you should pump out the wrong fuel as soon as possible and replace it with the right one. Cause 2: Defective spark plug

The right fuel has been refilled, but the lawnmower still doesn't want to? Maybe it's the spark plug. This could possibly be defective or very dirty. To get precise information about this, you should take a closer look at the spark plug. The manual or operating instructions show you exactly where it is located. It also describes in detail how it can be solved.

Often it is enough to clean the spark plug with an old cloth (without water!). The contacts in particular should be free of dirt so that a spark can jump over.

If it still doesn't work afterwards, it may be broken. Then you have to buy a new one. You will find a detailed description on the existing spark plug. It should explicitly be the same so that it fits in your lawn mower.

Cause 3: dirty air filter

The lawnmower engine needs clean air to start properly. For this they have an air filter. Over the years, however, a lot of dust, dirt and even oil accumulate in it. According to the experts at motorgeraete-stichel.de, all types of filters (paper air filters, foam air filters, ...) need an all-round check after about 25 hours of operation (or quarterly). Then they should be thoroughly cleaned or replaced at the latest.

  • The dirt in the paper air filter is easy to pour out. A compressor is also ideal for such cleaning work.
  • With foam air filters you can achieve optimal results with hot water and detergent.

You will be amazed at what it can do when starting when the air filter is free of dirt and dirt.

Cause 4: Blocked knives

You will now be wondering what the knives have to do with the start attempt. Watch out! If you pull the starter cable and the knives are blocked at the bottom, the engine cannot start. Often you notice this very easily, because the cable is rather difficult to pull.

In that case you should take a look at the substructure. Often it is just old grass remains or small stones that get caught somewhere or have simply accumulated over time. Carefully turn the lawnmower to the side and remove any blockages.

But beware! According to presseportal.de, fingers are injured in around 34 percent of all accidents in the garden. The lawnmower is at the top of the list of causes. Disconnect the ignition plug beforehand for petrol lawnmowers and the mains cable for electric lawnmowers. This will prevent the lawn mower from starting during your maintenance and cleaning work.

Cause 5: idle times too long

The winter was long and the lawn mower was able to enjoy an extensive break. What may have been just as relaxed for you can lead to extreme starting problems for the lawn mower itself. If a lawnmower stands around unused for too long, it may happen that it does not start immediately in the spring and may require several attempts.

Often the problem is solved if you try the starting process a little more often. Some operating instructions even state exactly what to do if the lawnmower has had a long break.

Cause 6: special feature of ride-on mowers

Anyone who is allowed to own a lawn tractor can count themselves lucky. This allows large areas to be mowed particularly quickly. What you shouldn't forget, however, is that ride-on mowers function much like a car. It is also powered by a battery. If this is empty, the engine cannot start. So make sure in advance whether it is fully operational.

Cause 7: special feature of electric lawnmowers

Many of the above causes do not apply to electric lawnmowers. However, this does not mean that starting with an electric lawn mower cannot be problematic.

Electricity is essential for an electric lawn mower. Here it can happen that the power cable has a defect or the plug is simply not properly in the socket.

If the cable has a defect, contact a specialist. As a layperson, you should definitely stay away from such repairs.