stihl ms250 air filter


The Importance of Regularly Changing the Air Filter for STIHL MS250 Chainsaw

As a website operator, I understand the importance and challenges of maintaining a chainsaw. STIHL MS250 chainsaw is a reliable tool for cutting and pruning trees, which means that it has to undergo rigorous use with dust, debris, and other particles. Therefore, as an operator, it is essential to communicate the importance of regularly changing the air filter of a chainsaw. This article will discuss the implications of not changing the air filter and how to change it.

The Effects of Not Changing the Air Filter

The air filter is an integral component of the chainsaw that protects the engine from debris and dust. It ensures that the airflow entering the engine is clean, which ultimately allows the engine to run smoothly. However, when the air filter becomes clogged due to dust, debris, and other particles, it can no longer serve its purpose, and the engine’s performance can be affected. The following are some signs that the air filter needs to be changed:

  • The engine runs unevenly or stalls
  • Smoke comes out of the chainsaw
  • The chainsaw is difficult to start
  • The chainsaw consumes more fuel than usual

Ignoring any of these signs can result in more severe damage to the chainsaw’s engine and reduce its lifespan. Therefore, it is crucial to change the air filter regularly.

The Process of Changing the Air Filter

The process of changing the air filter for a STIHL MS250 chainsaw is relatively simple and can be done without professional assistance. The following are the steps to follow:

  1. Locate the air filter cover on the chainsaw. It is typically located on the side of the chainsaw and secured with a bolt or screw.
  2. Remove the air filter cover and air filter. Check the air filter for any visible damage or debris.
  3. Using a soft-bristled brush, remove any debris or dust from the cover and the air filter.
  4. Replace the old air filter with a new one, making sure it fits properly.
  5. Replace the air filter cover and secure it with the bolt or screw.
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It is advisable to change the air filter after every 10 hours of use or at least once a year. However, in dusty or humid environments, the air filter should be checked and cleaned more frequently.


As a website operator, it is crucial to provide helpful information and guidance to users. Changing the air filter regularly is an essential aspect of maintaining a STIHL MS250 chainsaw. Failure to change the air filter can result in expensive repairs or replacement of the engine. By following the simple steps outlined in this article, users can ensure that their chainsaw performs efficiently and has a long lifespan.