replying to Ulysses, Rodney Zapf wrote:
I have a similar problem. I did bang on the crankshaft nut to loosen the
flywheel but there seems to be much magnetic "pull" between the fly wheel and
the module . The mower is an model 8237 and I did purchase a new module and
installed it with ,010 clearance. With no ground wires attached, the plug
grounded , hand spinning the flywheel (pretty fast), I cannot detect a spark
(dark room) . What could cause this?