Chainsaw Repair

Some solid state coils have a built in advance which works by detecting voltage which is dependent of rotational speed .The faster the rotation the higher the voltage until coil saturation won't increase the voltage.

Two examples of failures I've encountered on this design .Briggs 18 HP twin.It would fail on full advance and fire so early you could not get it started until it cooled off .042 Stihl that would not advance,I doubt it would turn much over 6000 RPM under this condition .

I'm not familiar with the coil in question weather it's an advancing type or not .Usually that kind either has three coil stater  pieces or three magnets on the flywheel or at least the ones I've seen do .What you have I don't have the foggiest idea .--more --