Yamaha VMX12 2001 Service Manual page 383

SHAFT DRIVE
1. Select:
• final drive pinion gear shim(s) 1
• ring gear shim(s) 2
a. Position the final drive pinion gear and the
ring gear with shims 1 and 2. Calculate
the respective thicknesses from information
marked on the final drive housing and the
drive pinion gear.
1 Final drive pinion gear shim
2 Ring gear shim
3 Thrust washer
b. To find final drive pinion gear shim thickness
"A", use the following formula:
Final drive pinion gear shim thickness
A = (84 + a/100) – (83 + b/100)
Where:
a = a numeral (positive or negative) on the
ring gear, to be divided by 100 and added to
"84".
b = a numeral on the final drive housing, to be
divided by 100 and added to "83".
Example:
If the final drive pinion gear is marked "+01"
and the final drive housing is marked "50":
A = (84 + 1/100) – (83 + 50/100)
= (84 + 0.01) – (83 + 0.50)
= 84.01 – 83.50
= 0.51
Therefore, the calculated final drive pinion
gear shim thickness is 0.51 mm. Shim sizes
are supplied in the following thicknesses.
Final drive pinion gear shims
Thickness (mm)
7 - 108
CHAS
0.30 0.40 0.50