Results 1 to 2 of 2
  1. #1

    Join Date
    Dec 2017

    KM55R shaft problem

    My Stihl KM55R (KombiMotor) is starting and revving fine, but the shaft doesn't turn with the motor, like the shaft is disconnected. I'm talking about the part that engages and drives attachment tools like string trimmer and edger.

    What should I be checking?

    It's occurred to me to remove the engine cover to look at the shaft but last time I removed the top cover the entire trigger mechanism disassembled itself. Had to go to the shop to get it put back together. Should I be able to remove the cover to examine the shaft without messing up the trigger?

    Thanks for any help.


  3. #2

    Join Date
    Nov 2014
    Victa slashers & Push , Rover Rancher II's, Cox ( several ) & White LT120 + GT 200

    Re: KM55R shaft problem

    If you could not work out how to put the handle back together then you might be a touch beyond your skill set.
    Between the engine & the shaft there is a clutch and that gives problems.
    However to get to the clutch you have to remove the front cover and that includes the handle with the switches.

    OTOH if you are up for it, the job is quite strait forward just so long as you remember to use the 2nd most important toll in your box, the camera.
    Take a photo of every part, before you take it off, the part itself then the unit with the part missing, then take off the next part, and the next pair of photos.
    Thus you have a picture book set of instructions about how to put it back together.
    I can send you a copy of the parts book .
    However the only KM manual I have is for the 110 which has a different engine .
    The clutch and the offending trigger & handle are the same.

    If you want them I can email them to you directly but they can not be put on this forum as Stihl is very anal about their IP.
    SO send me a pm with your real email address if you want them.

Similar Threads

  1. HondaGCV190 engine governor shaft problem
    By nwohio in forum Small Engine & Mower Repair
    Replies: 0
    Last Post: 04-20-2017, 12:02 AM
  2. Output shaft looks deformed?? Is this a problem?
    By chuckles in forum Briggs & Stratton Forum
    Replies: 15
    Last Post: 04-14-2017, 08:36 AM
  3. Replies: 4
    Last Post: 06-25-2014, 07:27 AM
  4. Square rear shaft key problem
    By abrunk in forum Craftsman Forum
    Replies: 1
    Last Post: 04-03-2014, 04:14 PM
  5. Problem with Stihl FS 130 Drive Shaft
    By rollincode3 in forum Stihl Forum
    Replies: 0
    Last Post: 04-14-2013, 01:20 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts