I pulled the flywheel off of a 1986 30 hp. That had 2 ....yes 2 bad keys shear off. The dealer asked me how tight I was doing the nut. Tight enough I said.
""" NO WAY """" Was his answer. He said I HAD TO use a accurate Torque bar set to 90 pound feet. The 4th key with a torque bar / wrench...