Yamaha Z300A, Дополнительное руководство по обслуживанию

Страница: 16 / 90

GEN
INFO
General information
9
6D03F1X
Lower case
The propeller shaft housing and the ring are newly designed to reduce the exhaust back-pressure
and cool the propeller damper.
Cooling water is taken in from the front of the trim tab, flows through the pipe in the lower case and
propeller shaft housing, and then is supplied directly to the propeller boss.
This prevents the cooling water from mixing with the exhaust gas in the exhaust passage in the
lower case and also prevents the cooling water from obstructing the exhaust gas.
Therefore, the exhaust back-pressure can be reduced.
A low gear ratio has been adopted to match the power output characteristics.
1
Water pipe (for cooling the propeller boss)
2
Heli-sert bushing
3
Ring
4
Fluorine-coated oil seals
5
Propeller shaft housing (with water passage)
È
Water flow
É
Pinion gear
Ê
Reduction gear
Ë
Ì
Í
Model Gear ratio
Z250 1.81
Z250F
Z300
1.75
Model
Identification
mark
Notes
Z300
LZ300
60X1 Same as Z250F
Model
Identification
mark
Notes
Z300
F 60X00 Same as Z250F
R 69L00 Same as 250C
LZ300
F 6D100 New
R 6D100 New