Parts such as the E-4 Cam Chain - Tensioner: Tensioner Collar, O-ring,14.8x2.4, Guide,cam Chain, Washer,drum are included in the Xl600l 1985 (f) E-4 Cam Chain - Tensioner parts fiche.
The component with the lowest price in the E-4 CAM CHAIN - TENSIONER schematic is the Bolt,flange,6x25.
In this schematic the "Bolt,knock 7x12" is used most often.
