Lower Unit (Ft50, Ft60) - Yamaha F50F Service Manual

LOWR
8. Apply a load to the reverse gear by
installing the propeller 8 (without the
washer 9 and 0), then the spacer A as
shown.
NOTE:
Tighten the propeller nut B while turning the
drive shaft until the drive shaft can no longer
be turned.
9. Slowly turn the drive shaft clockwise and
counterclockwise and measure the back-
lash when the drive shaft stops in each
direction.
Reverse gear backlash:
0.89–1.34 mm (0.0350–0.0528 in)
10. Add or remove shim(s) if out of specifica-
tion.
6-27
Lower unit
Reverse gear
backlash
Less than
0.89 mm (0.0350 in)
More than
1.34 mm (0.0528 in)
M: Measurement
Available shim thicknesses:
0.10, 0.12, 0.15, 0.18, 0.30, 0.40, and
0.50 mm
11. Remove the special service tools, and
then install the water pump assembly.
Shim thickness
To be decreased by
(1.12 – M) × 0.56
To be increased by
(M – 1.12) × 0.56
6C13G11