6-30
E
BACKLASH
LOWR
Measuring steps
(1) Set the shift rod into the neutral posi-
tion.
(2) Load the reverse gear by installing the
propeller without the collar
, and
then tighten the propeller nut.
(3) Install the backlash indicator onto the
drive shaft (16 mm (0.63 in) diameter).
(4) Install the dial gauge onto the lower
unit and have the dial gauge plunger
contact the mark on the backlash indi-
cator.
(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).
M : Measurement
1
T
R
.
.
Propeller nut
5 N
•
m (0.5 kgf
•
m, 3.7 ft
•
lb)
Backlash indicator ........................
90890-06706
Magnet base plate ........................
90890-07003
Dial gauge set ...............................
90890-01252
Magnet base .................................
90890-06705
Reverse gear
backlash
Shim thickness
Less than
0.93 mm (0.037 in)
To be decreased by
(1.29 - M)
××××
0.49
More than
1.65 mm (0.065 in)
To be increased by
(M - 1.29)
××××
0.49
Available shim thickness
1.0, 1.1, 1.2 and 1.3 mm
1
2
3
4
5
Summary of Contents for 25BMH
Page 48: ...FEATURES AND BENEFITS GEN INFO 1 12 E COOLING SYSTEM Fig 7 ...
Page 49: ...1 12 CARACTERISTIQUES ET AVANTAGES GEN INFO F ...
Page 50: ...1 12 MERKMALE UND VORTEILE GEN INFO D ...
Page 51: ...1 12 CARACTERÍSTICAS Y VENTAJAS GEN INFO ES ...
Page 92: ...MAINTENANCE SPECIFICATIONS SPEC 2 8 E DIMENSIONS ...
Page 156: ...GENERAL CHK ADJ 3 26 E NOTE Grease the inner cable and the lock nut 2 Apply Yamaha grease D ...
Page 440: ......
Page 441: ......
Page 444: ......
Page 445: ......
Page 446: ...Printed on recycled paper Printed in Japan Oct 2000 1 9 1 25BMH 30HMH YAMAHA MOTOR CO LTD ...