Chrysler 4 HP Outboard Motor Service Manual OB 2278, Page 10Get this manual
SECTION IV (Con't FPry up lightly on flywheel with removal tool while striking knock-off screw with hammerSee figure 5
2-3Breaker Points
ARemove flywheel as outlined in Section IV, paragraph 2-2BCheck breaker points for burning or pittingClean or replace if necessaryBreaker point spring tension should be 16-32 ozmeasured at right angles to surface at center of contactSee figure 6
CAUTION'
Do not strike nut with excessive force as this may damage crankshaft and crankshaft bearings
GRemove knock-off screw and lift flywheel from crankshaftCarefully mspect flywheel for cracks or breaks
WARNING