Ducati SUPERBIKE 848 MY 2008 Manual page 630

Crankcase assembly: crankshaft/connecting rods assembly
Renewal of the small end bushing
To remove the worn bushing, use a suitable drift and a press.
Drill lubrication holes into the new bushing in correspondence with the existing lubrication holes on the connecting rod
small end.
Now ream out the bushing until the inside diameter (D) is 20.035 to 20.045 mm.
Connecting rod bearings
It is good practice to renew the bearings (3) each time the engine is overhauled.
Replacement bearings are supplied ready for assembly and they must not be reworked with scrapers or emery cloth.
The bearings may belong to two different size classes, each identified by a specific colour (YELLOW and BLUE).
The bearings are comprised of an external steel ring, the inner face of which is electro-plated with a lead-based
compound.
The table shows the appropriate bearings to be fitted according to the size class of the crankshaft and connecting rod.
Crankshaft class
B
B
A
A
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Connecting rod class
B
A
B
A
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Bearings colour
BLUE/YELLOW
YELLOW/YELLOW
BLUE/BLUE
BLUE/YELLOW