As you have found NormK it is just easier and more cost effective to use the newer electronic coils when available. There is usually plenty donors around from blown engines.

Originally Posted by NormK
Hi Jack, I'm interested to know how you can use the original coil, I have always just cut the coil wire to the points off, leave the points/condensor inside and fit the later coil and job done. If you used the original coil wouldn't that require fitting an electronic ignition module?
Yes. If you ever work on Kawasaki engines you will find many have an external ignitor setup.

For us here in the US we have an universal ignitor module available to use which allows us to convert many point systems over to electronic while still using the older coils. Using an universal module allows us to repair both positive and negative grounds systems. They sold under the names Atom and Nova II or you can the Kawasaki ignitor if your engine is a negative ground type; it just that the Kawasaki version is fairly expensive here. I do the older cast iron block Briggs were positive ground. These allows repair older chainsaws here that electronic ignition are not available for. Most modern engine are negative ground but older engine can be either way.

[Linked Image from bigcooter.com]

The OP here wasn't able to use this system as the trigger wire of the coil was broken off at the coil.

With addition of the self contained electronic triggers allows the manufactures to start using variable spark advance designs which when they fail can give to some pretty strange ignition problems. Anything from backfiring through the carburetor to shooting flames out of the exhaust. I have personal seen both.