1980 70 hp J70ELCSA. If I replace the stator and timer base, can you tell me the procedure for getting the synchronizing / timing correct? Do I need special tools?
I advise against using an impact wrench... too easy to screw up something when using a high speed tool.
Use a mechnaic's tool called a spanner wrench. It is used to turn the flywheel of a any automobile when installing/removing a clutch pressure plate that has a manual shift transmission. Pictured below. One secton of the wrench needs to be heated and bent slightly to grab the flywheels of the 2 and 3 cylinder outboards... see the slight discoloration on mine below about hlfway between the stationary portion and the swing out portion's tip. (Hard to see I know).