Yamaha F200B, Service Manual

Page: 462 / 579

LOWR
Lower unit
8-99
Selecting the pinion shim (T3)
See “Selecting the pinion shim (T3)” (8-45).
Pinion shim (T3) selection table
See “Pinion shim (T3) selection table” (8-48).
Selecting the propeller shaft shim
(T4)
1. Install the original propeller shaft shims,
and then assemble the propeller shaft
housing assembly. See steps 2–10 in
“Assembling the propeller shaft housing
assembly” (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. Set up the special service tools
1
and
2 , and then measure the propeller shaft
free play.
3. Determine the propeller shaft shim (T4)
thickness adjustment using the “propeller
shaft shim (T4) selection table” according
to the free play measurement.
Example:
Free play measurement = 0.46 mm
a
Propeller shaft shim (T4) thickness adjust-
ment = 0.15 mm
b
The current shim thickness must be
increased by 0.15 mm.
È
Free play measurement
É
Shim thickness adjustment
TIP:
• If the shim thickness adjustment value is
positive, the current shim thickness must
be increased by that amount and, if the
value is negative, the current shim thick-
ness must be decreased by that amount.
• The gray-colored cells on the selection
table indicate the specified propeller shaft
free play. Shimming is not required if the
measured propeller shaft free play is 0.25–
0.35 mm.
• The values for the shim thickness adjust-
ments specified in the selection table are
intended to obtain the specified propeller
shaft free play of 0.3 mm.
4. Calculate the new propeller shaft shim
(T4) thickness.
Calculation formula:
New propeller shaft shim (T4) thickness =
Current propeller shaft shim thi
Shim thickness adjustment
Example:
Use the following formula when the shim
thickness adjustment value is negative.
Current propeller shaft shim thickness = 0.82
mm
Shim thickness adjustment = –0.15 mm
New propeller shaft shim (T4) thickness
= 0.82 mm + (–0.15) mm
= 0.67 mm
Dial gauge set
1
: 90890-01252
Magnet base B
2
: 90890-06844
Propeller shaft free play:
0.25–0.35 mm (0.0098–0.0138 in)
1
2
È
É
0.18
–0.10
0.26
–0.10
0.28 0.30
È
É
0.36
+0.10
0.44
+0.12
0.46
+0.15
0.48
+0.15
a b