Some items from this specific schematic: Washer, Special, Bearing 15bc02xv3 Uni 4259, Vertical Rubber Cap, Thrust Washer 2 Mm.
Of all the components that make up this 013 Head: Timing the Washer 15.2x24x1 has the lowest price.
This 013 Head: Timing diagram displays the required parts for the M620s 2002 Eu (monster 620s) 9151-1411a 013 Head: Timing.