Measuring The Reverse Gear Backlash - Yamaha F6AMH Service Manual

BACKLASH
(6)Determine the shims to be added or
removed according to the specified.
Forward gear
backlash
Less than
0.88 mm (0.0346 in)
More than
1.26 mm (0.0496 in)
Available shim thickness: 0.10, 0.12, 0.15, 0.18,
0.30 mm
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
Reverse gear backlash:
1.01 - 1.38 mm (0.0398 - 0.0543 in)
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.
Propeller nut:
2 N m (0.2 kgf m, 1.5 ft lb)
(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.
6-25
Shim thickness
To be decreased by
(1.07 - Measurement)
2.52
To be increased by
(Measurement - 1.07)
2.52
Adjust