If you look around the outer edge of the flywheel you will see 1/2″ dia holes drilled in it which where used to balance the flywheel. Put a 1/2 bar in the deepest one of them and undo the nut. The strap wrenches are not very good as they spring to much. A puller is best used to pull the flywheel off, lump hammers are best avoided.
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