Yamaha F50D Servise Manual - page 225
8-26
0
1
2
3
4
5
6
7
8
9
10
A
13. Check that the forward gear backlash
average is within specification.
TIP:
Adjust the shim thicknesses if the forward
gear backlash is out of specification.
14. Remove the special service tools.
15. Apply a load to the reverse gear by
installing the propeller
q
(without the
spacer
w
), washers
e
,
r
, and propeller
nut
t
.
16. Tighten the propeller nut
t
to the speci-
fied torque.
17. For measuring reverse gear backlash
proceed the step 6–step 12.
18. Check that the reverse gear backlash
average is within specification.
TIP:
Adjust the shim thicknesses if the reverse
gear backlash is out of specification.
19. Remove the special service tools, and
then install the oil seal housing and water
pump assembly. See “Installing the drive
shaft” (8-16) step 2 and “Installing the
water pump” (8-17).
Shimming
9
Make sure to select the pinion shim(s) (T3)
before selecting the forward gear shim(s)
(T1) and reverse gear shim (T2).
9
When assembling the lower unit to mea-
sure the backlash after selecting the pinion
shim(s), do not apply gear oil, grease, or
sealant to the parts.
9
When assembling the lower unit after shim-
ming is completed, make sure to apply gear
oil, grease, and sealant to the specified
areas.
Forward gear backlash:
0.18– 0.53 mm (0.007– 0.021 in)
Propeller nut
t
(shimming):
10 N·m(1.0 kgf·m, 7.4 ft·lb)
w
e
r
q
t
Reverse gear backlash:
0.71–1.06 mm (0.028– 0.042 in)
Shimming (F50D)