Yamaha YFM4FAR Service Manual page 268

REAR AXLE/FINAL DRIVE GEAR AND DRIVE SHAFT
Shims are
thicknesses.
Final drive pinion gear shim
Thickness (mm)
*****************************************************
Ring gear shim selection
1.Select:
Ring gear shim(s)
G
*****************************************************
Selection steps:
G
To find the ring gear shim thickness "B", use
the following formula.
Ring gear shim thickness:
"B" = c + d – (e + f)
c = a numeral (usually a decimal number)
on the final gear case either added to or
subtracted from 45
d = a numeral (usually a decimal number)
on the outside of the ring gear bearing
housing and added to 1
e = a numeral (usually a decimal number)
on the inside of the ring gear either
added to or subtracted from 35.00
f = bearing thickness (considered constant)
Bearing thickness f:
11.00 mm
Example:
1) If "53" is stamped on the final gear case,
c = 45 + 0.53 = 45.53
2) If "05" is stamped on the ring gear
bearing housing,
d = 1 + 0.05
= 1.05
3) If "– 05" is stamped on the ring gear,
e = 35 – 0.05
= 34.95
4) f = 11.00.
7 - 21
DRIV
supplied in the
0.15 0.30
0.45 0.50
following
0.40
0.60