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12. Fit auxiliary chain tensioner without sealing ring and fasten on the crankcase only hand-tight. The mechanical auxiliary chain tensioners must be
installed with the correct pretension when the valve timing is adjusted or checked. The necessary pretension force has been achieved when the
measuring pin is flush with the face surface of the pressure screw. Turn the screw if necessary.
This is a source reference. Confirm exact model applicability in the original material.