Online Community of Zenith Builders and Flyers
don't remove a link. you have to have a locking/friction throttle of some sort; if you already have that the friction needs to be somehow increased. It's normal and it's up to the builder to use one of the common decades old methods to control it. Plans/install manual...
I'll go back and see what I can do with the throttle cable for tightening the friction lock. Though reading the Rotax owners forums I see some people have replaced their springs with these ones that are made for exactly this problem.
I was having problems keeping my carbs synched and didn't like the throttle creep either. I bought the first dual cable for the 912 that Mcfarlane manufactured and that solved all my problems. Synched the carbs and haven't touched them since and the friction lock works just right. I recommend it...yeah it's $$ but IMO worth it. I thought the springs were too strong too but got no complaints now it just becomes a matter of technique and getting used to it. Somebody, I think it was Jon Croke, cut a round off his and they didn't advance on a go around or something like that and he piled it up. Ask around, I forget. I like the factory springs. Stout but reliable and those strong springs are what keeps your carbs synched.