Yamaha EK40G, Service Manual

Page: 150 / 200

LOWR
6-51 6H95G11
Lower unit
5. Slowly turn the drive shaft clockwise and
counterclockwise and measure the back-
lash when the drive shaft stops in each
direction.
6. Add or remove shim(s) if out of specifica-
tion.
M: Measurement
7. Remove the special service tools from
the propeller shaft.
8. Apply a load to the reverse gear by
installing the propeller
8
(without the
washer
9
), then the spacer
0
as shown.
NOTE:
Tighten the propeller nut
q
while turning the
drive shaft until the drive shaft can no longer
be turned.
9. Slowly turn the drive shaft clockwise and
counterclockwise and measure the back-
lash when the drive shaft stops in each
direction.
10. Add or remove the shim(s) if out of spec-
ification.
M: Measurement
11. Remove the special service tools, and
then install the water pump assembly.
Forward gear backlash:
0.19– 0.47 mm (0.0075– 0.0185 in)
Reverse gear backlash:
0.76– 1.04 mm
(0.0299– 0.0409 in)
Forward gear
Shim thickness
backlash
Less than To be decreased by
0.19 mm (0.0075 in) (0.33 - M)
×
0.53
More than To be increased by
0.47 mm (0.0185 in) (M - 0.33)
×
0.53
Available shim thicknesses:
0.05, 0.08, 0.12, 0.30, and
0.50 mm
Available shim thicknesses:
0.05, 0.08, 0.12, 0.30, and
0.50 mm
6F660560
8
9
0
q
Reverse gear
Shim thickness
backlash
Less than To be increased by
0.76 mm (0.0299 in) (0.9 - M)
×
0.53
More than To be decreased by
1.04 mm (0.0409 in) (M - 0.9)
×
0.53
6H95G11_06 04.8.11 13:01 Page 54