Measuring The Reverse Gear Backlash - Yamaha F6Z Service Manual

BACKLASH MEASUREMENT
(3) Attach the backlash indicator 1
onto the drive shaft (12.8 mm (0.5
in) in diameter) as shown.
Backlash indicator:
YB-06265/90890-06706
(4) Attach the dial gauge onto the
lower unit and have the dial gauge
plunger contact the mark on the
backlash indicator.
Base plate:
YB-07003/90890-07003
Dial gauge set:
YU-03097/90890-01252
Magneto base:
YU-3448/90890-06705
(5) Slowly turn the drive shaft
clockwise and counterclockwise.
When the drive shaft stops in each
direction, measure the backlash.
2. Adjust:
Forward gear backlash
y
Remove or add shim(s).
NOTE:
Adjust the shim(s) to be added or removed
according to specification.
Forward gear
backlash
Less than
0.20 mm (0.008 in)
More than
1.15 mm (0.045 in)
Available shim thickness:
0.1, 0.2, 0.3 and 0.4 mm
M: Measurement
MEASURING THE REVERSE GEAR
BACKLASH
1. Measure:
Reverse gear backlash
y
Out of specification
Reverse gear backlash:
0.66 - 1.56 mm (0.026 - 0.061 in)
48
Shim thickness
To be decreased by
(0.68 - M) x 0.39
To be increased by
(M - 0.68) x 0.39
Adjust.
Æ