Stihl MS 391 Chainsaw Problems: Troubleshooting Guide and Easy Solutions

Welcome to our CZcams video on troubleshooting common problems with the Stihl MS 391 chainsaw! If you're a proud owner of this powerful tool but have encountered some issues along the way, you're in the right place. In this comprehensive video, we provide a step-by-step troubleshooting guide to help you identify and resolve the most common problems with the Stihl MS 391 chainsaw.
From starting issues and poor performance to chain tension problems and fuel-related concerns, we cover it all. Our experienced team of experts will walk you through each problem and provide easy solutions that you can implement right away. No more frustration or wasted time trying to figure out what's wrong with your chainsaw.
With our troubleshooting guide, you'll gain the knowledge and confidence to diagnose and fix the issues yourself, saving you money on costly repairs and ensuring your Stihl MS 391 chainsaw performs at its best. We believe that by empowering you with the right information, you'll be able to tackle any problem head-on and get back to cutting with ease.
Make sure to watch the entire video for a comprehensive understanding of the troubleshooting process. Don't forget to like, comment, and subscribe to our channel for more informative videos on chainsaw maintenance and repairs. Let's get your Stihl MS 391 chainsaw back in tip-top shape together!
00:00 Intro
00:54 Starting Problems (Stihl MS 391)
02:05 The Chain Has Stopped Engaging Due to a Dirty Air Filter
02:53 Chainsaw Suddenly Lost Power
03:38 Chain Sprocket and Clutch Drum Oil Seal Failure
04:11 Crankshaft Oil Seal Failure
04:39 Poor Handling
05:04 Leaking Oil Tank
05:26 FAQ (Stihl MS 391)
05:27 How Much Is a 391 Stihl Chainsaw Worth?
06:17 Is a STIHL MS 391 a Pro Saw?
07:04 How Big of a Bar Can You Put on a Stihl MS 391?
07:50 Is the Stihl MS 391 a Good Saw?
08:45 Conclusion
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[@germanmeera]

Great sharing

[@paulgreen2863]

I have emptied old gas and put new. I have changed spark plug, air filter and fuel filter. I have checked the plug spark. It is blue but seems weak. It still won't start. Any suggestions. BTW the plug does not get wet. I have put gas in the carburetor and even wet the plug. Still doesn't start.

[@wesleybremner3476]

I have a MS 391 and it has a 25 inch bar on it. I bought it like that. Are they only supposed to use a 20 inch bar?

[@chadcoxthehunterchadcox8252]

No, they use up to a 25" bar

[@adrianstefan23]

#like 👍👍👍👍

[@aleksandarbjelosevic562]

180 the best of best

[@darellluck7992]

Hi fit it with a smaller bar 16 or 18 inch will cut alot better and faster never a fan of large bars unless you have a saw with immense power like 661 or 881.

[@WSCEngineering]

I have never seen such dull chains on saws which are being evaluated in a video. Pretty silly.

[@vascopires2045]

It’s plastic

[@vascopires2045]

A stihl ms 391 is not a pro saw nope

[@Garde538]

My saw shop says they are in the pro lineup

[@A.E.Lanman777]

What is a pro saw?

[@TruggyDriver69]

The ms391 is complete junk.