Hello , 

After changing carburator cables on my plane i use the torque of 4 N.M  for tightening the allen screw on carburator arm (as indicated in rotax 912 installation manual 73-00-00 page 15)

But using that torque the throttle arm allen screw do not swivel freely and sync is impossible, I have read that overthigtening can crush the bushing graduated sleeve and cause this effect. 

But i use the listed torque , so someone can give correct torque or procedure?

  • Re: Overtightening locknut of throttle arm allen screw

    by » 3 months ago

    4 Nm is 3 ft lb. Almost nothing. Snug plus a little more.

    The Bushing should be longer than the Arm is thick,
    The washer is 5mm and the Bushing sets ON the washer, Not  IN it.
    If you used a 6mm washer, That might be the problem.

    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Clicking the "Thank You" is Always Appreciated.

    Thank you said by: RotaxOwner Admin

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