Find the pdf manual on here, find the ohm specs and test it.
Also ohm the coil and plug cap seperate. Make sure coil and ground connection are clean bare metal.
Test switches
if you need to dig deeper, you'll need a flywheel puller to get the flywheel off, make sure you get the thick washer off under the nut, and screw the puller in until it bottoms out to keep from ripping the threads out