Vittorazi Motors COSMOS 300 Maintenance Manual page 193

Replace the screws M5x12 (23) and the bearing retainer (24) each time they are disassembled.
Insert the crankshaft bearing (25) with the bearing retainer (24) and the 3 screws M5x12 (23) and
tighten with the torque shown in the figure.
5 Nm
Heat the inner ring of the bearing (25) to 120 °C.
Insert the crankshaft (3) with the bearing.
Cosmos 300 – Maintenance manual – V2 193