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INTRODUCTION
EAU10090
Congratulations on your purchase of the Yamaha YP400X. This model is the result of Yamaha’s vast experience in the pro-
duction of fine sporting, touring, and pacesetting racing machines. It represents the high degree of craftsmanship and reli-
ability that have made Yamaha a leader in these fields.
This manual will give you an understanding of the operation, inspection, and basic maintenance of this scooter. If you have
any questions concerning the operation or maintenance of your scooter, please consult a Yamaha dealer.
The design and manufacture of this Yamaha scooter fully comply with the emissions standards for clean air applicable at the
date of manufacture. Yamaha has met these standards without reducing the performance or economy of operation of the
scooter. To maintain these high standards, it is important that you and your Yamaha dealer pay close attention to the rec-
ommended maintenance schedules and operating instructions contained within this manual.