MS150T Engine Vibration

[Stihl Envy]

So I recently purchased a MS 150 T. The seller sent me a video of the saw running, starting stopping, cutting, etc. everything seemed fine. When I got the saw and fired it at home I noticed immediately there was a vibration somewhere. I pulled off the bar and chain and fired the saw and the vibration was still there. The vibration feels like it’s coming from the engine as it increases with rpm. The seller is willing to take the saw back, I just have to pay return shipping. I really want the saw, but I do not want any issues, or I might as well just bought a new saw. Is this common for the 150T or do I have a time bomb on my hands?

 

[Tobystihl]

Check the cooling fins on the flywheel, also check the tightness of the three bolts that hold the engine to the plastic frame (they have been known to strip out their threads!)

 

[fatgraderman]

Jeez- my 150 rear handle has been like the energizer bunny. One of my better saws.


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[Wood Doctor]

I don't think that you have a time bomb on your hands. It's been around, so do a complete clean up, especially around the carb area. Make sure all machine screws are tight all over. These saw were very well made and many prefer them over the 192T.

 

[jackjcc]

Have you owned a top handle before? They tend to have a different feel. Post a video if you can. My 150 will jump around at idle on a flat surface, that’s normal.


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[Stihl Envy]

Have you owned a top handle before? They tend to have a different feel. Post a video if you can. My 150 will jump around at idle on a flat surface, that’s normal.


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I have a 200t and a 192t. They both feel a lot smoother than this 150t

 

[Stihl Envy]

So I dug into this saw this morning and found the flywheel nut to be loose and the flywheel key sheared off. It was known by the previous owner as there is sharpie marks to help line up flywheel. Sent pics to the seller and he immediately sent me a credit and return shipping label

 

[TheTone]

If you like the saw otherwise, wait before sending it back. The flywheel key is only necessary for aligning the timing. Thoroughly clean off the flywheel stub of the crankshaft and the flywheel hole with carb or brake cleaner and get the flywheel aligned. Tap it lightly to seat it , and then torque the flywheel nut properly. The fit of the flywheel hole and crank along with the torque are what holds the flywheel in place. Now run it. If it still vibrates, send it back.