Quote Originally Posted by Av8r3400 View Post
Like in the other thread, the very first thing to check is the tach.

Do not trust an analog tach, regardless of the brand, on a 582. A Tiny Tach can be had for less than $50 from most motorcycle/ATV shops as well as a million different places on the internet.
The Tiny Tach and the Rotax Tach match up within 50 RPM's. As soon as I hit 3,000 RPM's on the Tiny Tach the engine starts shaking hard, so I do not let it drop any lower then 3,100 when taxiing. Others do not seem to have this issue