Stihl MS 391 is a powerful chainsaw that is popular among homeowners and professionals alike. It has a high power-to-weight ratio and is designed to handle tough cutting tasks.
However, like any other chainsaw, it may develop problems over time. If you are facing issues with your Stihl MS 391, this article is for you. In this guide, I will discuss the common STIHL MS 391 problems and provide solutions to help you troubleshoot and fix them.
Common Sthil MS 391 Problems
Starting Problems
One of the most common problems with the Stihl MS 391 Chainsaw is difficulty starting the engine. This may be caused by several factors, such as a clogged air filter, a faulty spark plug, or a dirty carburetor.
To fix this problem, first, check the air filter and clean it if it’s dirty. Next, check the spark plug and replace it if it’s worn out. If the problem persists, clean the carburetor and make sure that the fuel lines are not clogged.
Overheating
Another common problem with the Sthil MS 391 is overheating, especially during extended use. Overheating may be caused by a dirty air filter, a clogged muffler, or a damaged cylinder.
For Solution, first clean the air filter and the muffler. Next, check the cylinder for any signs of damage or wear and replace it if necessary. Also, make sure that you are using the correct fuel-to-oil ratio as specified in the manual.
Cutting Problems
If your Sthil MS 391 is not cutting as it should, there may be several reasons for this. It could be due to a dull or damaged chain, a loose chain tensioner, or a damaged guide bar.
To fix this problem, first, inspect the chain for any signs of damage or wear. Sharpen or replace the chain if necessary. Next, check the chain tensioner and adjust it if it’s loose.
If the problem persists, inspect the guide bar for any damage or wear and replace it if necessary.
Oil Leaking of Stihl ms 391
Oil leaks are a common problem with the Stihl MS 391. They may be caused by a damaged oil seal, a loose oil cap, or a damaged oil line.
To solve this problem, first, check the oil seal and replace it if necessary. Next, tighten the oil cap to ensure a tight seal. If the problem persists, inspect the oil line for any damage or wear and replace it if necessary.
Loud Vibrations
Excessive vibrations can be annoying and may cause discomfort during use. They may be caused by a loose or damaged chain, a worn-out or damaged guide bar, or a loose engine mount.
first, inspect the chain and guide bar for any damage or wear. Replace them if necessary. Next, check the engine mount and tighten it if it’s loose.
Conclusion
The Stihl MS 391 is a reliable and powerful chainsaw, but like any other tool, it may develop problems over time.
Starting problems, overheating, cutting problems, oil leaks, and excessive vibrations are some of the common problems that users may face.
By following the solutions outlined in this guide, you can troubleshoot and fix these problems and get your Stihl MS 391 running smoothly again.
Remember to follow the maintenance schedule outlined in the manual to prevent problems from occurring in the first place.
Common FAQs
Can I use any type of oil in my Stihl MS 391?
How often should I sharpen my ms 391 chainsaw chain?
How do I adjust the chain tension on my Stihl MS 391?
How often should I clean the air filter on my Stihl MS 391?
John is a Chainsaw and small engine technician! With years of experience in the industry, John has honed his skills and knowledge to provide top-notch Advice for all your small engine and chainsaw needs. From routine maintenance to complex repairs, John has the expertise to get the job done efficiently and effectively. He takes pride in delivering high-quality information, ensuring that your equipment is running smoothly and safely.