Originally Posted by ydog
It does have the energy transfer system. Haven't found a good source for tuneup guidance. Any recommendations? Can the ETS be replaced with an electronic ignition system? All new to me. Thanks
It's still possible that you just have a condensor problem.The misfire would be load dependent,and limit your road speed to about 1/2 what it should be.If it's an open-circuit condensor failure (more likely),you can just fit an extra condensor to the coil terminal or points wire.
You may need a degree wheel to check timing and phasing of the ET.You definitely need the ET type AAU,which has a short advance curve (5 camshaft degrees,or 10 degrees at the crankshaft).You might get by using a different AAU,provided you lock it at full advance.
I don't know what the fully advanced timing is for a Cub.With the engine in that position,you should have the points just opening when you twist the AAU to the fully advanced position.
The alternator should then have the leading edge of the magnets on the rotor just level with,or up to 1/16" past the trailing edges of the stator laminations.If you look at the top of the rotor the front magnet edge should be about level with the front stator lamination edge.
There should be holes in the back of the rotor that you can choose to get it phased right at full advance.You can drill more,if necessary.