Mountfield Lawn Mower Troubleshooting

Mountfield mowers are one of the UK’s leading brands in the garden machinery market, and are manufactured to very high standards. However, even the best quality machinery can encounter issues.

In this post, Lawnmowers Direct provides an easy-to-follow guide to Mountfield lawn mower problems with answers to common troubleshooting topics.

Mountfield mower won’t start

After being stored away over the winter, one of the most common issues faced by lawn mower owners is getting it started.

Mountfield lawn mower starting problems can be down to a number of reasons, including:
• No fuel
• Old fuel
• Loose, dirty or broken spark plug
• Engine blockage

So, if your Mountfield mower won’t start, make sure you have plenty of fresh fuel, no engine filters are blocked and that your spark plug is clean and secure.

You can also carry out maintenance tasks that should help keep your mower in good condition before storing your mower for winter, which you can read about here.

Mountfield mower is not running smoothly

If your Mountfield lawn mower is not running properly, it could be down to a number of reasons.

The most common reasons that a lawn mower will not run smoothly is down to either the oil or carburetor.


Using the wrong oil in your lawn mower will reduce its efficiency, and risk permanent damage to the engine. You can find out which oil is right for your mower in the owner’s manual.

If you have used the wrong oil in your mower, you will need to carry out an oil change. The oil change on any mower follows a similar process. Find out how to carry out a Mountfield lawn mower oil change here.


The carburetor in your Mountfield lawn mower is the component that mixes the gasoline and air in the engine to create a combustible solution that allows your mower to run.

Eventually, the carburetor in any mower will need to be adjusted or replaced. If your carburetor is in need of attention, it will begin to mix the gasoline and oil in the wrong quantities, causing the mower to run either rich or lean. This can affect the performance of the mower, and prevent it from running smoothly.

Both adjustments and replacement of the carburetor can be carried out during your annual service activity.

Mountfield mower not cutting properly

If your Mountfield lawn mower is not cutting the grass as it should, you may need to replace the blades.

Like all mowers, Mountfield lawn mower blades will need replacing when required to ensure that a good quality cut is achieved.

Blunt blades can cause your mower to pull on grass which damages your lawn, not cut the grass at all, and lead to your mower overheating due to the extended use required to complete lawn cutting.

You can easily replace your Mountfield lawn mower blades yourself by following this step-by-step guide. Alternatively, lawn mower blade replacement can be done by a lawn mower servicing provider.

Find out more

If your Mountfield lawn mower problems have been left uncovered in this troubleshooting guide, get in touch with the team at Lawnmowers Direct now.

Our customer service team are experts in all the mower brands we stock, and will be able to provide over the phone advice and guidance to get your Mountfield mower back up and running as soon as possible.