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Thread: Stihl MS650 -- broken -- rebuild?

  1. #21
    Mac Daddy Sponsor Al Smith's Avatar
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    I wouldn't be concerned about the broken fins .I doubt it would over heat and even if it does it's going to take a long time before .

    You have to remember heat travels from hot to cold .Those fins are right in line from the air blast of the fan on the intake side .They get the first part of the cooling air blast .Vertical cylinder Stihls cool pretty well anyway .

  2. #22
    Treehouser Cut4fun's Avatar
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    I would run that cylinder without any worries. The pic on page 2 cyl.
    Learn Redneck Chainsaw Repair at ChainsawRepair

  3. #23
    More biners!!! Sponsor pantheraba's Avatar
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    Glad for the confirmations. Thanks.
    Gary

  4. #24
    THE CALM ONE!!!! Sponsor squisher's Avatar
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    What's the worst that could happen anyways. It could blow and you have to rebuild it? Or just rebuild a perfectly running saw just in case? Naw , run it.

  5. #25
    More biners!!! Sponsor pantheraba's Avatar
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    That's what I told Alex...I am 64, never had a saw seize up. Might be time to have something new happen.
    Gary

  6. #26
    TreeHouser
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    Maybe you will be disapointed

  7. #27
    More biners!!! Sponsor pantheraba's Avatar
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    I hope so.
    Gary

  8. #28
    TreeHouser Magnus's Avatar
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    When fins are broken on intake side its not as risky as on outlet side.
    This one I would run without much thought..

    Had many saws I run with broken fins.

    Cooling is better on intake side as all air pass this. Left side and muffler side is is hottest
    Partner had an idea about combining fluid cooling and air cooling. Fluid around cylinder to absorb and transfer heat evenly.
    A more effective cooling and this would keep temps in better levels. Sadly, this never got off drawing table.

  9. #29
    Mac Daddy Sponsor Al Smith's Avatar
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    Here's another thing about most dealers .Nothing derogatory intended but they will quote pretty much to company policy weather a saw needs certain repairs to adhere to factory specifications .Those may or may not fit in every situation but that's how they are trained .Problem is in many cases being the repairs might exceed the value of the saw .

  10. #30
    More biners!!! Sponsor pantheraba's Avatar
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    Yep...that likely happened here.
    Gary

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