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Stihl MC 170

Post in 'The Gear' started by 1750, Oct 23, 2013.

  1. 1750

    1750 Minister of Fire

    Joined:
    Apr 21, 2013
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    Loc:
    Michigan
    Oops, yep I meant the sprocket. I'll try the two cycle mix tomorrow.

    If that doesn't do it, I might have to take it in. The videos I've watched on replacing the worm gear that moves the oil around make it look like it might be over my head!

    Thanks again for all of your suggestions and help.

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  2. Clarkbug

    Clarkbug Minister of Fire

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    Dec 20, 2010
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    Yeah, I would say if swishing a few times doesnt clear up your issue, time to visit your friendly dealer or OPE mechanic.

    You can do it if you want to learn how to tinker, but it does look like its a little involved, and I believe the pump itself has to be set to a certain depth to function properly, which can be a little tricky. The Service/Shop manual can be found with a little googling if you want to go that route for step by step instructions.
  3. tom dee

    tom dee Member

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    Dec 30, 2012
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    Loc:
    Central North Carolina, Progress Hybrid
    Anything that will cut Oil n shiet out Super clean gas etc you gonna rinse it out when done ..
  4. 1750

    1750 Minister of Fire

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    Hey, it worked! I let it sit a bit and swished it around a few times. After I drained it and refilled with bar oil, when I fired it up it started pumping away.

    Thanks to everyone for your help. I now know wayyy more about this saw than I thought I would. :)
  5. Clarkbug

    Clarkbug Minister of Fire

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    1,051
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    Upstate NY
    Glad it worked out! Much cheaper than a service call at the dealer!

    Also, what shape is your sprocket in? I'm guessing there is a rim sprocket on there, and it if has a groove in the middle that the chain fits into, it should be swapped out. Lots of times if you dont know what it looks like new, you wont know what it looks like when its worn.
  6. 1750

    1750 Minister of Fire

    Joined:
    Apr 21, 2013
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    Michigan
    It doesn't look like it has a groove in it. I'll keep an eye on it, though. Thanks again!

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