I would like to know the airgap needed when fitting an electronic coil on a GX 120 Honda Engine
The engine just cutout and have checked all connoctions and all seem OK so assume it is the coil
Any other reasons for the sudden cutout which happened as far away from the shed as possible with spadelug wheels on, what a job to get the m/c under cover
If the engine has an oil alert / low oil sensor then check your oil level as if allowed to get too low it will do its job and cut the ignition out saving you an expensive repair !.
As for the air gap one of those small paper / card labels (you know the ones with a string attached) will be ok.