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Stihl FS-90R throttle cable repair - pics

Discussion in 'Mechanic and Repair' started by Roger, Jun 22, 2012.

  1. Roger

    Roger LawnSite Fanatic
    Messages: 5,943

    Two recent threads asked about replacing the parts inside the handle of an FS90R trimmer when making a throttle cable replacement. I make this replacement a couple of weeks ago, but failed to shoot pics and post. Sorry, ... I was pressed for time the evening I did the task, and wanted to get finished.

    As promised in a recent thread, I would open my handle and shoot some pics of the handle parts. However, as promised, I would NOT take all the parts out and replace for the sake of pics. So, here are some pics of the insides, in the finished state. Yes, step-by-step would be more helpful, but perhaps these will get somebody out of a predicament. I've taken many pics, made some simple annotations of them, with texts of descriptions. I apologize -- don't do this enough times to really learn. So, my text bubbles are not very elegant, but hopefully they will tell the story. Hang tight, there are quite a few pics, probably have to be spread across several posts.

    Hope this might help somebody ..








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  2. Roger

    Roger LawnSite Fanatic
    Messages: 5,943

    hort101 likes this.
  3. Roger

    Roger LawnSite Fanatic
    Messages: 5,943

    And, the last ones ...




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  4. BigFish

    BigFish LawnSite Platinum Member
    Messages: 4,156

    Hey, thanks for taking the time to post.
    hort101 likes this.
  5. dutch1

    dutch1 LawnSite Silver Member
    from Jayhawk
    Messages: 2,249

    Roger, Stihl needs to put you on staff as an illustrator for either(both) their owners manual or their repair manual--on the other hand I'll have to admit I've not seen their repair manuals.:clapping:
    hort101 likes this.
  6. blake101

    blake101 LawnSite Senior Member
    Messages: 581

    Great job, could have used it last week.
    hort101 likes this.
  7. dboyd351

    dboyd351 LawnSite Bronze Member
    Messages: 1,124

    Thanks Roger.
    hort101 likes this.
  8. gebby

    gebby LawnSite Senior Member
    Messages: 712

    Did this tonight on my 110. Got apart and said Oh sh--. Just where did these 2 other springs come from. Took me a while but, I got it. Wish I would have paid more attention and looked for this first. My other 2 will go out sometime. I'll be ready for them then.
    hort101 likes this.
  9. Herman Kantz

    Herman Kantz LawnSite Member
    Messages: 1

    This is a great post - thanks Roger.
    For reference to the parts layout before assembly is put on the shaft I took a few quick photos which I hope will be of some help to someone down the road.
    Two items that you may want to note are the return spring for the kill switch. This spring returns the throttle from locked wide open / start to idle position.




    The other item that is prone to pop out is the cable outer sheath stop / free play adjuster. Some throttle free play can be taken up or increased by depressing / disengaging the teeth with a small flat blade and pushing it in the desired direction.



    H K
    hort101 likes this.
  10. Roger

    Roger LawnSite Fanatic
    Messages: 5,943

    I'm glad to know the original post, albeit three years ago, has been helpful. Thanks to Herman for adding some pics to better explain the repair.
    hort101 and ed2hess like this.

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