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ms 391 help

Started by Hitchcock Woods, June 15, 2015, 09:50:32 AM

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Hitchcock Woods

June 15, 2015, 09:50:32 AM
Our MS 391 shuts off when chain brake is applied.  Do i need to adjust the carb idle a little higher?
Chain Saws         Vehicles            LogSplitter
MS 192TC          6100D x2     TimberWolf TW3
MS 391               L2800
MS 441              HPX Gator
346XP           Honda4x4 Rancher
372XP              4x4 Frontier
HT 101 x2
MS 311

JohnG28

#1
June 15, 2015, 11:16:57 AM
It shuts off at idle with the brake is engaged?  Does is also shut off at idle without the brake?  Could try opening the L screw a little but may be something more going on.
Stihl MS361, 460 & 200T, Jonsered 490, Jonsereds 90, Husky 350 & 142, Homelite XL and Super XL

Hitchcock Woods

#2
June 22, 2015, 02:23:10 PM
So, after careful inspection, the drum sprocket bearing was shot and the clutch was worn "blue" from overheating.  I am replacing both of these parts and hopefully it will solve the issue.  Spoke to one of my local small engine mechanics and he thought it could be the clutch.
Chain Saws         Vehicles            LogSplitter
MS 192TC          6100D x2     TimberWolf TW3
MS 391               L2800
MS 441              HPX Gator
346XP           Honda4x4 Rancher
372XP              4x4 Frontier
HT 101 x2
MS 311
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