RE: Help with Evolution trainer power system !!!
That is a great engine, but they did have a few problems with setup at the factory. Here's how to adjust it:
Remove (Or loosen) the Low-End Limit collar.
Close the carb so that it is only open 1 millimeter
With the carb in that position, close the Low-End needle and open it 1 1/5 (One and One Fifth) turns
Replace the (Or tighten) the Low-End Limit Collar