Measuring The Reverse Gear Backlash; Magnetic Base Attaching Plate; 90890-07003 Dial Gauge Set - Yamaha F40BMHD Service Manual

LOWR
2
1
BACKLASH
5
4
1
3
MEASURING THE REVERSE GEAR
BACKLASH
1. Measure:
• Reverse gear backlash
Out of specification → Adjust.
Reverse gear backlash
0.8-1.1 mm (0.031-0.043 in)
Measuring steps
(1) Set the shift rod into the neutral posi-
tion.
Shift rod wrench
YB-06052/90890-06052
(2) Load the reverse gear by installing the
propeller without the collar
then tighten the propeller nut.
Propeller nut
5 Nm (0.5 m
(3) Install the backlash indicator onto the
drive shaft (16 mm (0.63 in) diameter).
Backlash indicator ........................
YB-06265/90890-06706
(4) Install the dial gauge onto the lower
unit and have the dial gauge plunger
contact the mark on the backlash indi-
cator.

Magnetic base attaching plate ....

90890-07003
Dial gauge set ...............................
YU-03097/90890-01252
Magnetic base...............................
YU-34481/90890-06705
(5) Slowly turn the drive shaft clockwise
and counterclockwise. When the drive
shaft stops in each direction, measure
the backlash.
6-36
E
1
, and
kgf, 3.6 ft lb)
• •
2
3
4
5