Ducati SUPERBIKE 848 MY 2008 Manual page 619

Crankcase assembly: crankcase halves
Notes
The method described for the crankshaft can also be used to calculate the shim thicknesses for the gear shafts.
Shimming the gearbox selector drum
To determine the total thickness ST of the gearbox selector drum shims, proceed as described below.
Given that:
LT1 = clutch-side crankcase half depth
LT2 = chain-side crankcase half depth
LT = gearbox selector drum shoulder.
Given that the end float should be 0 10 to 0.40 mm
and taking the mean optimal value of 0.25 mm,
This gives: ST=LT1+LT2-LT-0.25.
Given that ST=ST1+ST2
we obtain ST1=LT1-59-0.125, so that ST2=ST-ST1.
Notes
The method described for the crankshaft can also be used to calculate the shim thicknesses for the gear shafts.
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