Yamaha F150B, Service Manual

Page: 360 / 458

8-81
LOWR
Lower unit
8. Check that the drive shaft rotates
smoothly. If the drive shaft does not
rotate smoothly, reduce the shim(s) (T1)
thickness by 0.1 mm, and then check that
the rotation of the shaft again.
9. Install the shim(s) (T2)
g
determined in
“Adjusting the forward gear shim
thickness (T2)” (8-76).
TIP:
Do not reuse a shim if it is any deformed or
scratched.
10. Install the propeller shaft housing
assembly
h
, and key
i
.
TIP:
When assembling the lower unit to measure
the backlash, do not install the dog clutch and
O-ring.
11. Install the claw washer. Check that the
position
b
is set in place properly.
12. Install the ring nut, and then tighten the
ring nut to the specified torque.
13. Check that the drive shaft rotates
smoothly. If the drive shaft does not
rotate smoothly, the shim(s) may be
installed incorrectly or there may be
foreign material on the shim(s).
14. Measure the reverse gear backlash. See
“Measuring the forward and reverse gear
backlash before disassembly” (8-68).
Adjusting the reverse gear shim
thickness (T1)
1. Remove the roller bearing. See “Disas-
sembling the lower case” (8-61).
g
i
h
Ring nut wrench extension
j
:
90890-06513
Ring nut wrench
k
: 90890-06512
Pinion nut:
143 N·m (14.3 kgf·m, 105.5 ft·lb)
Reverse gear backlash:
0.24–0.65 mm (0.0094–0.0256 in)
b
j
k