Vittorazi Motors Moster 185 Plus Maintenance Manual page 100

Heat both inner rings of the bearings (16, 17 of the previous image) simultaneously up to 80 °C.
Pay the utmost attention when heating the rear bearing (16) because it has a rubber shield.
Place the clutch bell (9) and the Seeger ring (8) on the shaft.
Degrease the seat of the cover on the clutch bell.
Insert the cover (7) into the clutch bell (9).
Moster 185 Plus - Maintenance manual - V1 100