Chrysler 70, 75 and 85 HP Outboard Motors Service Manual OB 3438, Page 191Get this manual
At low speedsthe pump is displacement pump; as motor speed increases, water resistance causes the vanes to flex in and it becomes centrifugal pump Removal BRemove shift rod pin from shift rod coupler and free lower shift rod from couplerFigure 43Remove six (6) hex head screws and lockwashers securing gear housing to motor leg Figure 5
WARNING
Disconnect spark plug leads to accidental starting of motorprevent
1Remove propeller assembly as followsARemove retaining (cotter) pin from propeller nut and thread nut off shaftBDrive pin out of propeller and remove propeller and O-ring from shaft