Hi Guys, I have a Terrible Vibration on my Aircooled 126 at about 1750 RPM to 2000 RPM, It is seriously so bad you cannot drive it, I have replaced the Gearbox and Engine Mountings, The new mountings were recently Purchased and the only difference is spring is Longer and there is a Green Plastic Bush - I wasn't sure where this went as The Original set up didn't have one?
I was reading on here about A Terrible Vibration on BIS Models with the Flywheel Being Put on Incorrectly - Can it happen on Aircooled Models if the Flywheel has been put on Incorrectly ?