These tools are need as a set on all 1966
through 1974 snowmobiles equipped with OMC
opposed twin engines. (Spline wrench is also
used on R.C.'s.) Attach the flywheel holding
tool to the flywheel with three screws and
slip the spline wrench on the splines of the
fixed pully of the primary sheave. The long
handles of these tools give you the leverage
needed to make sheave removal easy.
