OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Walk Behind Lawn Mower Frames Question On Scott Bonnar Cylinder Mowers Hello Everyone

Well today I was pretty busy. Decided to slow down a bit though and check to see if the crankshaft on the green engine is interchangeable, rather than rush ahead with painting.

Well, it is indeed the same engine, they must have used the same mold to cast the newer engine block because the same mountings for the points and condenser are right behind the flywheel. The only difference is the cast iron bore, magnetron, smaller fuel tank and different sump cover.









Problem is that there is deep vertical scoring on the cylinder walls and I can feel them by running my finger nails around the cylinder. Probably needs to be honed and an oversized piston and rings fitted. I am afraid it will probably end up being used for parts.






The only thing I have to do now is get a propane torch to heat up the PTO and remove the rusted steel sleeve that was used to mount the aluminum pully.