i just baut 1976 yamaha 400 enduro and it ran perfectly fine until a few monthes ago it wouldnt start. so i tested things out to see what was ring with it and i found out there wasnt eny spark heppening. i thought it might be the points that were gone so i tested my coil from my skidoo and hooked it up and ther was a spark so im guessing its probly the coil and im just emailing u to fon out if it could be enything els that could be causin this problem. pleas email me back at skate_chub@hotmail.com