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Neil T

Ms150 problem

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Hi all. My ms150 chain stops rotating and appears to be clogging up constantly. This has only developed recently,  saw and bar 4 yrs old. Even when cleaned it soon stops, chain tension ok. Any thoughts please. 

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Sounds like the bar tip sprocket is failing or has been damaged. Best fit a new bar and chain and try that.

Not sure what the "clogging up" bit is! I take it the oiler is functioning OK?

Point the bar tip at a piece of clean wood and rev flat out, it should leave a line of fresh oil in 2-3 seconds.

Edited by spudulike
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2 hours ago, Dan Maynard said:

Was it 150s that can feg up under the flywheel?

Yes but the OP said the chain stops rotating. Flywheel clag will just make the idle die in my experience!

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Yes but the OP said the chain stops rotating. Flywheel clag will just make the idle die in my experience!
Fair point, makes sense.

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A thorough clean under the flywheel helped hugely, it was pretty choked up. I'll try a new bar too and clean it more . Many thanks Neil 

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Put some petrol in the oiler and blow out thoroughly to clean and then test to make sure it’s flowing.

 

I worked at one firm where 4 of the 5 had the problem you describe.  The 5th one had an exhaust mod.  It never got clogged.  My theory is that the mod either gives the saw a bit more torque and/or chain speed.  Either way, it seems to clear the debris better when compared to standard.

 

I have 2 150t’s that have been modded and they rarely clogg up in the same way.

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