jcs290

Agree with tony27, set timing to standard and work from there. You have discovered one problem in the woodruff key, don't create another unnecessarily. Also, if the woodruff key is sheared then it is possible the flywheel nut has not been torqued properly in the past. Woodruff keys are not intended to stop the flywheel rotating on the shaft, they are to allow correct alignment of the flywheel relative to the stator for correct ignition timing. It is the tightness of the tapered boss in the flywheel mounted on the tapered shaft and tightened to the correct torque setting that ensures the flywheel turns with the crank. It is a good idea to ensure the condition of the mating tapered surfaces is good (smooth without scrapes etc), spotless and free of oil etc before refitting the flywheel to ensure the proper tightness is achieved. Can't help you with the torque setting though...Splat Shop maybe? Good luck.