I was thinking flywheel key. But, also, bent crank shaft.
I'd try replacing the flywheel key. But if it's still not
running, or runs but shakes violently, might be beyond
simple repair.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Ulysses" wrote in message
...


It seems very likely that you broke the "shear pin" that
holds the flywheel
to the crankshaft and keeps it in place. You need a puller
to remove the
flywheel. Don't pound on it with a hammer or you might
break it or damage
the magnet. Once you get the flywheel off you may find, as
someone else
pointed out, that it has other damage too. New shear pins
are usually
available at hardware stores in the lawn mower parts
section.