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As you might think, a loose magneto plate is not good as it will affect the point gap and therefore igniting timing. Is the “slop” up and down or more sideways? Up and down will be fixable, sideways not so much.
Joe B
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Take a look at the mounting ring that the magplate screws into. The flat side goes up and the beveled side goes down. This is depicted incorrectly upside down in many of the parts diagrams.
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Armature plate rotation is normally limited by the shifter interlock #4.
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the slop is up and down
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Well actually, it is not shown upside down. What they did was save money by reusing an older drawing where the “flat side” was stepped down to make room for a wave washer to provide friction to make the throttle stay where you put it (motors without twist-grip throttle control). Wave washer was not used on such motors and the flat side was actually flat. Guess they didn’t figure on people actually paying attention to the drawing.
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“Also, my roller keeps running off the end of the throttle cam and getting stuck there.”
Not sure if this would apply to your motor but I’ve seen where the link and stop assy. #14 gets badly worn and also creates a groove where it hits the shifter lock and that little bit of extra travel causes the throttle to be advanced too far, and as a result the roller runs off the end of the throttle cam.
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