Yamaha F6AMH, Service Manual

Page: 358 / 510

BACKLASH
(6)Determine the shims to be added or
removed according to the specified.
NOTE:
Since the smallest shim available is
0.10 mm, if the measurement is between
0.88 mm and 1.26 mm, do not change the
shim.
MEASURING THE REVERSE GEAR
BACKLASH
Measure:
Reverse gear backlash
Out of specification
Adjust
Measuring steps:
(1)Place the shift cam in neutral.
(2)Load the reverse gear by installing the
propeller without the front side spacer
1
, and tighten the nut.
(3)Set the lower unit upside down.
(4)Attach the dial gauge on the lower
case, and make the dial gauge stem
contact the mark on the backlash
indicator.
Forward gear
backlash
Shim thickness
Less than
0.88 mm (0.0346 in) To be decreased by
(1.07 - Measurement)
2.52
More than
1.26 mm (0.0496 in) To be increased by
(Measurement - 1.07)
2.52
Available shim thickness: 0.10, 0.12, 0.15, 0.18,
0.30 mm
Reverse gear backlash:
1.01 - 1.38 mm (0.0398 - 0.0543 in)
Propeller nut:
2 N m (0.2 kgf m, 1.5 ft lb)
6-25