1983 Yamaha 30EN Outboards Service Manual, Page 161Get this manual
I Item Drive unit: Transmission Gear ratio Reduction system Clutch type Turning direction of propeller Propeller drive system Propeller: Number of blades Diameter pitch type
30ESN30ELN
ForwardNeutralReverse 1.84 (2413) Bevel gear Clutch dog Clockwise Spline x9 x9 x9 x9 x9 x9 x9 x9 78 78 78 78 38 78 78 78 in in in in in in in in inin10 12 in11 14 in12 in13 in14 in12 inF