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LOWR
1
BACKLASH
Measuring steps
(1) Set the shift rod into the neutral posi-
tion.
(2) Load the reverse gear by installing the
propeller without the collar
then tighten the propeller nut.
Propeller nut
5 N
m (0.5 kgf
•
(3) Install the backlash indicator onto the
drive shaft (16 mm (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:
•
Reverse gear backlash
Remove or add shim(s).
Reverse gear
backlash
Less than
0.93 mm (0.037 in)
More than
1.65 mm (0.065 in)
Available shim thickness
1.0, 1.1, 1.2 and 1.3 mm
M : Measurement
6-30
E
1
, and
m, 3.7 ft
lb)
•
•
Shim thickness
To be decreased by
(1.29 - M) × × × × 0.49
To be increased by
(M - 1.29) × × × × 0.49
2
3
4
5
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Kapitel
