D
Deleted member 12676
Guest
I think most riders aren't even aware that the ground path (return path) for the spark is the metal-to-metal contact of the four screws on the metal frame of the stator coil. At the factory they don't do a good job of cleaning off those contact areas for good electrical conduction. So if there is some connection there electrically then there is some resistance which diminishes the spark strength. If there is no connection there electrically then it prevents spark from happening. With "some connection" as time goes on it gets rusty which gradually increases the resistance till the resistance is too great to allow spark. Use sandpaper or your rotary tool to clean off those areas so the heads of the screws get really good metal to metal contact.
