Chrysler 70, 75 and 85 HP Outboard Motors Service Manual OB 3438, Page 192Get this manual
4two screws securing exhaust snout to gear housing and remove snout 5Remove one screw and lockwasher securing gear housing to motor leg and pull gear housing from motor leg Figure 66Remove crankshaft spline seal retainer from driveshaft and driveshaft spline seal from motor leg 7Remove water pump as follows:
ARemove inlet water line sealBRemove four (4) screws securing pump to upper gear housingCSlide water pump body up and off driveshaftFigure 7DRemove water pump back plate and gasket from gear housing Figure 8Removing Water Pump Disc, Seal
Reassembly
If water pump kit is to be used, go to step 21Replace water pump (driveshaft) seal as follows :