Yamaha XS650SE Shop Manual page 191

This Supplementary Service Manual for XS650SF/XS650-2F has been
published to supplement the Service Manual for the XS650E (LIT-1 1616-00-
76), and provides updated information for the XS650E model as well as new
data concerning the XS650SF/XS650-2F. For complete information on
service procedures, it is necessary to use this Supplementary Service Manual
together with the Service Manual for the XS650E (LIT-1 1616-00-76).
NOTE:
This Supplementary Manual contains special information regarding periodic
maintenance to the emissions control system for the XS650SE. Please read
this material carefully.
FOREWORD
INTERNATIONAL DIVISION
YAMAHA MOTOR CO., LTD.
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SERVICE DEPT.