SPECIFICATIONS SD20
Model Reduction Gear System Direction Of Rotation
Reduction Ratio
SD50
Constant mesh gear with dog clutch
Cone clutch
Input Shaft
Counterclockwise viewed from stern
Propeller Shaft
Counter-clockwise viewed from stern
Counter-clockwise or clockwise viewed from stern
Ahead
2.64
2.32
Astern
2.64
2.32
Propeller Speed (rpm)
1364
1293
Lubrication System
Oil bath type
Lubricating Oil Capacity
1337
Standard Unit
2.2 L (2.3 qt)
2.2 L (2.3 qt), SD40: 1.8L (1.9 qt)
Long-Reach Unit
2.5 L (2.4 qt)
2.35 L (Extension 58) [2.5 qt], 2.45 L (Extension 100) [2.6 qt]
30 kg (66 lb)
39 kg (86 lb)
Dry Weight Remote-Control Device
SD50-4T
Control Head
Single control lever
Cable
MORSE 33C (equivalent)
Applicable Engine Model (Maximum Rated Output Power At Crankshaft)
1GM10C: 6.7 kW (9.1 hp) / 3600 rpm 2YM15: 10.3 kW (14 hp) / 3600 rpm 3YM20: 16.2 kW (22 hp) / 3600 rpm 3YM30: 22.1 kW (30 hp) / 3600 rpm
3JH4CE: 28.7 kW (39 hp) / 3000 rpm 4JH4ACE 39.6 kW (53 hp) / 3000 rpm 3JH5CE: 28.7 kW (39 hp) / 3000 rpm 4JH5CE: 39.6 kW (53 hp) / 3000 rpm
41 kg (90 lb)
4JH4-TCE: 55.2 kW (75 hp) / 3200 rpm
Note: A propeller with rubber bushing must be used in all SD series Sail-Drives. Note: 1 hp metric = 0.7355 kW
SD Operation Manual
53 © 2009 Yanmar Marine International
