Ducati MULTISTRADA 1200S ABS 2015 Workshop Manual page 1131

Overhauling the flywheel/generator assembly
Inspect the inner part of generator rotor (1) for signs of damage.
Check that the starter clutch is working properly and that the roller races do not show signs of wear or damage of
any kind.
Disassemble the unit if you find faulty operation.
Disassembling the generator flywheel
Unscrew the screws (2) and remove the generator rotor (1) from the flywheel.
Remove rotor (3) from flywheel (4).