Yanmar SD60-5 Sail Drive, mechanical clutch multiple friction plate, bell housing size SAE #4, #5, reduction ratio (fwd/rev) 2.23/2.23 | 2.49/2.49, weight 43.6 kg, direction of rotation I/P Counterclockwise, 3JH5E, 3JH40, 4JH5E, 4JH45, 4JH4-TE, 4JH57 and 4JH80, special order item, manual catalog datasheet