I am going to replace the lower guide rails on my m117. The cd says to use a flywheel detente to hold the motor when I break the crankshaft bolt free. My question, could I just put a wrench on the bolt and give the wrench a rap with a hammer and what damage might I do by by using this "blunderbuss" technique? Milt.

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Milterino
76 450 S.E.L.