Yamaha BWS 100 1999 Owner's Manual page 24

PRE-OPERATION CHECKS
NOTE:
Pre-operation checks should be made each time the scooter is used. Such an inspection can be accomplished in a
very short time, and the added safety it assures is more than worth the time involved.
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If any item in the Pre-operation Check is not working properly, have it inspected and repaired before operating the
scooter.
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