M15B no fire at plugs

[mountman62]

have a M15B, has no fire at plugs, was told it was the coil, how do i check coil and/or isolate to find the problem, has after factory electric start on it i think, the key is installed on the cowl, any help would be greatly appreciated, also what models would have ignition parts to interchange

 

[pvanv]

Be advised that you have a 3-decade-old museum piece, so beware the money pit. No carb stuff is available any longer, for example. But... if you do want to try, start with the Factory service manual, Part# 003-21035-1, $45.00, available from any dealer, including me. Diagnose the issue by referring to the table of resistance values. use a good analog ohm meter. Test the exciter (NLA), trigger (NLA), CD (over $212.00), and ignition coil (about $50.00). Some bits may interchange from a 25-year-old 15B2, but beyond that, you will be adapting stuff from a newer motor if it will fit. YMMV.