yes. I fit the magneto over the keyway. I have removed the magneto recently to check everything including the timing mark on the stator plate.
Since it is running fine at idle I am assuming that the stator is working correctly. My understanding is that the 2 stator coils are for ignition and the headlight. Is that correct?
When I received the engine back from the mechanic in 100 pieces I had to fit all of the gears, crank shaft, kick start mechanism, etc. all back into the case and put the case back together. I did not replace the crank bearings, I know that I probably should have, but I did not. I used Yamabond liquid sealant on the two halves of the case and pressed them back together. I did heat up the case in the oven at approx 200 degrees as I saw in a youtube video. Everything seemed to go back together very well. I changed out the piston rings, again, everything seemed to fit well. I checked the piston cylinder for scoring and it looked remarkably good for a '88 bike. I cleaned the piston head etc. Again, everything looked good and went together well. Is it possible that there is an air leak around the case somewhere that is allowing too much air into the cylinder? Would that make it run at idle but stall out when the throttle is turned?
I recently switched out the carborator with another KDX carb that my buddy had. It performed the same way, ran well at idle but stalled when the throttle was turned.
Could it be that the new stator is not working properly?