Yamaha F150A Service Manual page 378

13. Determine the backlash average, and
then round down the average to 2
decimal places.
Example:
Measurement point "a"
Measurement point "b"
Measurement point "c"
Measurement point "d"
Average
Round-down average
14. Check that the forward gear backlash
average is within specification.
TIP:
Adjust the shim thicknesses if the forward
gear backlash is out of specification.
Forward gear backlash (FL150A):
0.15–0.42 mm (0.0059–0.0165 in)
Forward gear backlash (FL150B):
0.15–0.49 mm (0.0059–0.0193 in)
15. Remove the special service tools from
the propeller shaft.
16. Remove the shift rod and propeller shaft
housing assembly.
17. Install the washers "1" between the
reverse gear "2" and the propeller shaft
"3".
(mm)
0.30
0.36
0.34
0.33
0.3325
0.33
1
8-71
Shimming (counter rotation model)
3
2
Washer "1": 90201-26M00
18. Install the original forward gear shims
(T2) and propeller
assembly, and then tighten the ring nut to
the specified torque.
Ring nut (shimming):
70 N·m (7.0 kgf·m, 51.6 ft·lb)
19. Repeat steps 11–13 to measure the
reverse gear backlash.
20. Check that the reverse gear backlash
average is within specification.
TIP:
Adjust the shim thicknesses if the reverse
gear backlash is out of specification.
Reverse gear backlash (FL150A):
0.24–0.58 mm (0.0094–0.0228 in)
Reverse gear backlash (FL150B):
0.24–0.65 mm (0.0094–0.0256 in)
21. Remove the special service tools and
washers, and then install the propeller
shaft housing assembly, shift rod, and
water pump assembly.
1
shaft housing