Lower Unit - Yamaha F60A Supplementary Service Manual

GEN
INFO

Lower unit

Drive shaft
The drive shaft has been machined to accommodate the high power output. The portion that
mounts to the pinion gear has been machined with involute splines to increase durability. A section
of the midspan of the drive shaft has been reduced to 14.4 mm (0.57 in) to prevent the drive shaft
from breaking under impact loads. In addition, two grooves are provided on the drive shaft for iden-
tification purposes.
1 Grooves for identification
2 Involute splines
3 Angled splines
7
General information
Ø14.4
95.5 mm
(3.76 in)
F60:
F50:
S69W1250
69W3D1X