Chrysler 20 and 30 HP Outboard Motors Service Manual OB 3435, Page 75Get this manual
magnets are badly damaged, new flywheel complete with new magnets will be required Carefully inspect flywheel for cracks and breaks Cracked or chipped flywheels must be replaced At high engine RPM, damaged flywheel can fly apart throwing shrapnel over large areaInspect crankshaft and flywheel tapers for fretting and workingIf there is evidence of this condition or if engine has had 25 or more hours of operationthe flywheel bore must be lapped To lap flywheel, proceed as follows: 1Remove flywheel key from crankshaft2Applya light coating of valve grinding compound to tapered portion of crankshaft3Install flywheel on crankshaft and rotate flywheel gently back and forth about 1 turn Do not spin flywheel completely around crankshaftFigure 124Rotate flywheel 90 and repeat above operation Figure 12
Wear safety glasses when compressed air
WARNING
working with
WARNING
To install the flywheel, proceed as follows1If flywheel key has been removed, reassemble key to crankshaft with outer edge of key parallel to center line of crankshaftFigure 13