Yamaha F225F, Service Manual

Page: 467 / 576

8-88
Shimming (counter rotation model)
0
1
2
3
4
5
6
7
8
9
10
A
Selecting the pinion shim (T3)
See “Selecting the pinion shim (T3)” (8-43).
Calculated value (B) table
See “Calculated value (B) table” (8-46).
Pinion shim (T3) selection table
See “Pinion shim (T3) selection table” (8-47).
Selecting the propeller shaft shim
(T4)
1. Install the original propeller shaft shims.
See steps 2–8 in “Assembling the propel-
ler shaft housing assembly and forward
gear” (8-74).
TIP:
• If the original shims are missing, measure
the free play without any shims.
• Do not reuse a shim if deformed or
scratched.
2. Install the propeller shaft housing
assembly. See step 2 in “Installing the
propeller shaft housing assembly” (8-79)
and steps 4 and 5 in “Installing the
propeller shaft housing assembly” (8-29).
3. Turn the propeller shaft 10 turns or more.
4. Set up the special service tools
a
and
b
.
5. Measure the propeller shaft free play.
6. Round the measurement value to the 1/
10 place if out of specification.
TIP:
In the “Propeller shaft shim (T4) selection
table,” use the rounded measurement value
for the free play measurement.
7. Determine the propeller shaft shim (T4)
thickness adjustment using the “Propeller
shaft shim (T4) selection table” according
to the free play measurement. See
“Propeller shaft shim (T4) selection table”
(8-90).
Example:
Free play measurement = 1.1 mm
a
Propeller shaft shim (T4) thickness adjust-
ment = 0.8 mm
b
The current shim thickness must be
increased by 0.8 mm.
A
Free play measurement
B
Shim thickness adjustment
a
b
Dial gauge set
a
: 90890-01252
Magnetic base B
b
: 90890-06844
Propeller shaft free play:
0.25–0.35 mm (0.0098–0.0138 in)
(mm)
A
B
1.0 1.1
+0.7 +0.8
a
b