Rotax Max drive sproket replacement?

[Bob Beck]

I have an older Rotax Max (old clutch) with a 14T gear on the clutch. I’m looking to replace with an 11T. What do I need to do this?  Do I need a tool to screw in the spark plug hole to stop the piston or can I hold the crank via the starter gear?  Or other means?

Also I read I need to replace the bearing basket with a bushing is that the case and why?  Is that a press in bushing? Any help on the process would be appreciated.

[tony zambos]

PM me with your email address and I’ll send you the two pages out the manual that you’ll need. Somewhere I have a Rotax piston stop and the fixation tool for the older clutch drum with holes. Both have never been used if you’re interested. I was never in favor using the piston stop tool, as there is a better tool, but the manual does say to use one.
In addition, you’ll need a deep well socket to remove the nut that holds the gear on. Believe it’s an 1.5 inch and I got mine from Auto Zone. It will help if you have the face of the socket ground down flat to properly engage the nut. A long breaker bar and Loctite are the only other tools needed.

LAD Specialties customer / tony kart / rotax / kt100

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