[sze=23Be aware they (OMC) used a different method to hold the Flywheel on those models. Early failures of the woodruff keys on the early models caused them to rethink how the flywheel was held n place. They reduced the size of the key to make more accurate and changed the flywheel tape and increased the torque on the propeller nut. So as you tighten the nut to the recommended 105 foot pounds’ the bottom ef the taper expands to fit making a joint that is almost welded. Schedule 8 bolts must be use. That much pressure on the big key flywheels tended to cracx at the key slot. Tho OMC flywheel puller is highly recommended.
Some beat on the center puller bolt with a heavy hammer. This can cause stress in the crankshaft as it sits on the thrust bearing. So’ LIFT the flywheel to take advantage of the end play and give the center bold a sharp rap with a small hammer. – Good Luck ![/size]
