How & Why to Keep Your Filters Clean
It is important to check your garden tiller’s air filter, especially if you haven’t gotten much rain, because this will create dustier conditions. Not keeping the air filter clean in your garden tiller can cause your tiller to run too hard.
The purpose of an air filter is to prevent dirt, dust and other debris from getting into the combustion chamber. If your air filter gets stopped-up, it will be much more difficult for the engine to start because the proper mixture of air and fuel wont be able to get to the combustion chamber to allow for easy starting.
If this is a concern, there is a very easy way to correct this problem, and no – it doesn’t involve chain saws or sledge hammers.
Take off the filter cover. Remove the pre-filter, which is made of foam, then remove the paper air filter. You can rinse off the foam pre-filter with warm water. Let the foam pre-filter sit out until it’s thoroughly dry.
Blow away dust and dirt from the paper filter using an air compressor. If the paper filter is at all torn, older than a couple of years, or simply won’t come clean, then it’s a good idea to replace it with a new filter set.