Yamaha F20A, Service Manual

Page: 244 / 444

6-20
E
LOWR
SHIMMING (FOR USA AND CANADA)
2. Install:
●
Shimming gauge
●
Drive shaft
●
Drive shaft bearing 1
●
Pinion gear shim(s) 2
NOTE:
●
Attach the adaptor plate to the gauge
base with four bolts of the appropriate
size.
●
Connect the shimming gauge to the drive
shaft so that the drive shaft is centered in
the gauge’s hole.
●
If the original shim(s) is unavailable, start
with a 1.5 mm shim.
Gauge block 3 :
YB-34432-16
Adaptor plate 4 :
YB-34432-10
Gauge base 5 :
YB-34432-11
3. Install:
●
Pinion gear
●
Pinion gear nut
4. Measure:
●
Specified measurement (M)
Out of specification
→
Adjust.
NOTE:
●
Measure the clearance between the shim-
ming gauge and the pinion gear as
shown.
●
Perform the same measurement at three
points on the pinion gear.
●
Find the average of the measurements (M).
T
R
.
.
Pinion gear nut:
50 Nm (5.0 m • kg, 36 ft • lb)