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LOWR
BACKLASH
(3) Install the backlash indicator onto the
drive shaft (16mm (0.63 in) diameter).
Backlash indicator ........................
90890-06706
(4) Install the dial gauge onto the lower
unit and have the dial gauge plunger
contact the mark on the backlash indi-
cator.
Magnet base plate ........................
90890-07003
Dial gauge set ...............................
90890-01252
Magnet base .................................
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
Remove or add shim(s).
Forward gear
backlash
Less than
0.31 mm (0.012 in)
More than
0.72 mm (0.028 in)
Available shim thickness:
1.0, 1.1, 1.2, 1.3 and 1.4 mm
M : Measurement
MEASURING THE REVERSE GEAR
BACKLASH
1. Measure:
•
Reverse gear backlash
Out of specification → Adjust.
Reverse gear backlash
0.93 - 1.65 mm (0.037 - 0.065 in)
6-29
E
Shim thickness
To be decreased by
(0.52 - M) × × × × 0.49
To be increased by
(M - 0.52) × × × × 0.49
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5
6
7
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