Reply To: Stubborn Flywheel, Gale 40 hp

[Buccaneer]

While the flywheel continues to be (forever?) mated to the crankshaft, I was
able to get the broken shoulder bolt out of the flywheel. I ordered a
Irwin 7/64″ HHS Colbalt Split Point drill bit for hardened metal.
Upon arrival, I noted it was made in “China”,
so I was doubtful, but it drilled into the hardened bolt very nicely.
I drilled down into the broken stud about 1/4″, but not all the way thru.
I then got a left handed drill bit a little bigger than the hole, and the
drill spun the broken stud right out.
I put the puller back on and let it sit over night tension on it.
Melted some wax around the crankshaft, left it sit a while.
Fired up the oxy / propane torch and heated around the hub for 5 minutes.
Tightened some more with the impact……. and……. Nothing happened again, lol.

Prepare to be boarded!