Chainsaw Repair

I thought it was the transformer because the guy I bought it from told me that is what he thought was wrong with it. I did some testing on the coil with a meter today and not sure it is the issue. I put in a new plug, cleaned the contacts and tried it. Nothing. So I'm going to look a little deeper. I'm not going to start shotgunning parts at this thing. I suspect I could easily get more into it than what it's worth. I'm still at the bail out point now...