10. Reduction and reversing gear
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10. Reduction and reversing gear
The specifications of marine gears are explained in this manual.
Refer to the service manuals of the existing JH3 series engines and the marine gear service manual for
inspection, disassembly and reassembly procedures. Also refer to the service manual of the sail drive.
10.1 Specifications of 3JH4E marine gears
Model KM35P KM35A
For engine models 3JH4E 3JH4BE
Clutch Constant mesh gear with servo cone clutch (wet type)
Reduction
ratio
Forward 2.36 2.61 2.33 2.64
Reverse 3.16 3.16 3.04 3.04
Propeller shaft speed
(at continuous power, Forward) min
-1
1232 1114 1246 1103
Direction of
rotation
Input shaft Counter-clockwise, viewed from stern
Output shaft Forward Clockwise, viewed from stern
Reverse Counter-clockwise, viewed from stern
Remote
control
Control head Single lever control
Cable Morse. 33-C (cable travel 76.2 mm)
Clamp YANMAR made. standard accessory
Cable connector YANMAR made. standard accessory
Output shaft
coupling
Outer diameter 100 mm
Pitch circle diameter 78 mm
Connecting bolt holes 4-10.5 mm
Position of shift lever, viewed from stern Left side Right side
Lubricating oil API CC class, SAE 20/30
Lubricating oil capacity 0.5 liters 0.65 liters
Dry mass 12 kg 13 kg
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