Yanmar 4LHA-HTP Operation Manual page 538

Chapter 7 Reduction and Reversing Gear
J. Construction
• A torque limiter is built into the input shaft gear to
prevent damage caused by excessive torque.
• The lube oil temperature c a n be controlled because in
addition to the input shaft gear which functions as a
centrifugal pump, an oil c o o l e r is also equipped.
• The oil cooler is equipped with a cooling water drain
cock to prevent cracks caused by freezing in cold weather.
It is therefore easy to drain t h e water.
• The propeller shaft can rotate in both counter clockwise
(C.C.W.) and clockwise (C.W.) directions.
NOTE: Since the difference in reduction gear ratio bet-
. ween C.C.W. and C.W. rotations is within 0.13%,
no problem occurs in operation.
1-2 Specifications of Angle Drive Marine Gear
For engine models
Down angle
Clutch
Direction of rotation Direction of rotation
Reduction ratio
Propeller shaft rpm at cont. rating
Remote control Remote control Remote control Remote control
Output shaft coupling Output shaft coupling Output shaft coupling
Position of shift lever
Lubricating oil
Lubricating oil capacity
Lube oil cooler
Model
Input shaft
Output shaft
Control head
Cable
Clamp
Cable connector
Outer diameter
Pitch circle diameter
Connecting bolt holes
4LHA-HTE
7 degree
Constant mesh gear with servo cone clutch (wet type)
Counter-clockwise, viewed from stern.
Bi-rotation
2.07 1.46
2.57
2187
1245 1546
Single lever control
Morse, 33-C (Cable travel 76.2mm or 3 in.)
Y A N M A R Made, standard accessory
Y A N M A R Made, standard accessory
0130mm (5.18")
0108mm (4.25")
4-012.3mm (4-00.48")
Right side, viewed from stern
Same as Engine lube oil
2.6C
Sea-water cooling
7-1-2
M4LHA
K M 5 A
Series 't