Remove the kill wire from coil terminal and test for spark but don't try to start since if it does the kill control will be disabled. This will eliminate the kill wire and switch in case one is shorting. If you still get no spark, buy the new coil.

Will check for spark with the kill wire removed in a day or two. If I see spark could I try a start ?
To kill the engine I would just pull the plug boot.
Would this work? Would it be ok to install a switch on the kill wire? Could also take up slack on the brake cable bymoving the dead man bar down a bit.
Or spring a few bucks for a whole new brake cable.

Haven't had the flywheel off....last thing I will do.

Thanks to nevada_walrus

Flywheel removal is not needed for a no spark condition. A sheared flywheel key would affect timing but not stop spark on electronic ignitions.

I was assuming the cable function is OK sense you said the switch worked. If cable is not dis-engaing switch due to stretching the cable should be replaced. Other mods may work but it's not the right way to do it.

Pulling the plug wire off will work but it can provide a shocking experience. I so much hate it when that happens that I simply find another way. Some folks seem to enjoy it though so knock yourself out ;-)

Nevada....Thanks for the warning about pulling plug cap with the mower running. IF engine starts will put on my old insulated electrician gloves use insulated tool and more sure I don't have a path to earth ground. Just wqant to know if the Toro will fire up again than, will fix the dead man bar proper like.
Go for a new cable probably.

I prefer to pull the boot back so the terminal is exposed and use a screw driver to short across to the head. But that's just me.

See my new post for today.