Chainsaw Repair

So, you have followed the shop manual to check spark, and it appears that you have done everything correctly. Since the old coil used the short ground wire and the new one does not. Try making sure the coil has a good ground to the case. Remove the coil and look at the mounting positions for the coil in the case. Scrape away the paint on the top of the coil mounting positions such that you are sure the coil armature is in direct contact with bare metal.