Norlett Rotovator. Magneto?

Hi.
Having de-coked the engine (Briggs and Stratton) I now wish to replace the points and condenser and perhaps the coil. The engine is very old and is minus the plate showing the model No. etc. I am having difficulty in removing the flywheel. Any suggestions? Access to a manual would be a great help. Thanks, in anticipation.
I J A