Yamaha F150B, Service Manual

Page: 350 / 458

8-71
LOWR
Lower unit
18. Install the original shim(s) (T2)
p
,
propeller shaft housing assembly
q
, and
key
r
.
TIP:
• If the original shim(s) (T2) are missing,
install new shim(s) (T2) with a combined
thickness of 0.52 mm.
• Do not reuse a shim if it is any deformed or
scratched.
19. Install the claw washer. Check that the
position
a
is set in place properly.
20. Install the ring nut, and then tighten the
ring nut to the specified torque.
21. For measuring reverse gear backlash
proceed the step 11–step 13 again.
22. Check that the backlash average is within
specification.
TIP:
Adjust the shim thicknesses if the reverse
gear backlash is out of specification.
23. Remove the propeller shaft housing
assembly, and then remove the washers
m
.
24. Install the water pump assembly.
Shimming
• Make sure to select the pinion shim(s) (T3)
and propeller shaft shim(s) (T4) before
selecting the forward gear shim(s) (T2) and
reverse gear shim(s) (T1).
• When assembling the lower unit to mea-
sure the backlash after selecting the pinion
shim(s) (T3), do not apply gear oil, grease,
or sealant to the parts.
• When assembling the lower unit after shim-
ming is completed, make sure to apply gear
oil, grease, and sealant to the specified
areas.
Washer
m
: 90201-26M00
m
n
o
r
q
p
a
Ring nut wrench extension
p
:
90890-06513
Ring nut wrench 4
q
: 90890-06512
Ring nut (shimming):
70 N·m (7.0 kgf·m, 51.6 ft·lb)
Reverse gear backlash:
0.24–0.65 mm (0.0094–0.0256 in)
s
t