Yamaha 50G Service Manual page 111

LOWR
YB-34432-9 YB-34432-10
YB-34432-17-A
SHIM SELECTION (FOR USA AND CANADA)
YB-34432-11 YU-26900-8
YU-26900-9
Example:
If P mark is "+5", then
M = 0.20 + (+5)/100 mm
= 0.20 + 0.05 mm
= 0.25 mm
If P mark is "–3", then
M = 0.20 + (–3)/100 mm
= 0.20 – 0.03 mm
= 0.17 mm
2. Assemble the shimming gauge with the
drive shaft, bearing and shim(s) as
shown in the illustration.
NOTE:
1. Attach the adapter plate to the gauge
base using 4 bolts with appropriate sizes.
2. If the original shim(s) is unavailable, start
with a 0.50 mm shim.
Gauge block:
YB-34432-9
Adapter plate:
YB-34432-10
Gauge base:
YB-34432-11-A
Clamp:
YB-34432-17-A
3. Install the pinion on the drive shaft and
tighten the nut to the specified torque.
4. Using a thickness gauge at the specified
measurement (M) established above,
check the fit between the shimming
gauge and lower surface of the pinion
as shown.
Thickness gauge:
YU-26900-8
YU-26900-9
5. If the thickness gauge at the M specifi-
cation will not fit, then remove or add
the shim(s) until the thickness gauge
just fits between the tool surfaces.
Available shim thickness:
0.10, 0.12, 0.15, 0.18, 0.30, 0.40
and 0.50 mm
6-18
E