Chrysler 20 and 30 HP Outboard Motors Service Manual OB 3435, Page 182Get this manual
ALoosen four (4) screws that secure upper gear housing to motor legFigure 6On models with motor leg extension, loosen four (4) screws that hold gear housing to extension Figure 7 BDisconnect shift rods by removing cotter pin and shift rod pin Figure 8
CAUTION
I next step, support gear housing to avoid damage CRemove four (4) screws holding gear housingand remove housing 3Remove inlet water line seal4Remove water pump from upper gear housing by removing four (4) screws that secure water pump to housingand sliding pump up off driveshaftFigure 9