I have replaced the cam shaft gear as described. Still getting stuck when I pull the cord. On closer examination it appears the main source of friction is when the piston is at the top of its stroke. ie when it is furthest from the crankshaft. The gasket was ruined when I took the crankcase cover off, and after some advice from a mower shop, i used sikaflex to take the place of the seal. Where to from here?
