Yamaha TT-R90(R) Owner's Service Manual

Congratulations on the purchase of your Yamaha TT-R90(R). This model represents the culmination of Yamaha's extensive experience in producing high-performance racing machines, embodying the craftsmanship and reliability that define the Yamaha brand.

This comprehensive manual provides essential guidance on the operation, inspection, basic maintenance, and tuning of your TT-R90(R). For any questions regarding this manual or your machine, please consult your authorized Yamaha dealer.

Key Information & Safety Guidelines

This manual is designed to help you understand and maintain your Yamaha TT-R90(R) for optimal performance and safety. Please pay close attention to the following critical points:

• This machine is designed exclusively for off-road use by young operators under adult instruction and supervision.
• Operation on public streets, roads, or highways is illegal and strictly prohibited.
• Always wear a helmet and appropriate protective clothing when riding.
• Rider weight should not exceed 40 kg (88 lb).
• This is a single-seater vehicle; no passengers are permitted.
• Always perform pre-operation checks before riding.