Re: What exactly does The small coil do?

[Don]

quote benchrascal:

Turns out there is nothing wrong with any of the components .it’s the operator needs a tuneup .After switching out and testing everything I stood looking at the motor and for some reason decided to (finally) check the top end for bearing runout ,…. well turns out there is so much wear that the point setting is a suggestion only ,once running it picks one cylinder and stays there.Funny thing because this motor is so clean i would never have suspected such extreme wear.Oh well can’t win them all.

Are you sure the upper bearing/crank is worn? The usual problem is wear between the crankcase pilot bushing and the mag plate bushing. These engines aren’t known for upper bearing issues, unless rust or mechanical damage is obvious.