Yamaha Technical Bulletin: December 4,2015
Bulletin Number: M2015-013R

Safety Bulletin:

In affected motorcycles, both second gear wheel and pinion gears in the transmission may break as a result of extremely high stress and/or improper shifting. This is due to inadequate component strength and stress concentration at the gear teeth bottom land. In addition, the third and fourth wheel gears may be deformed or break as a result of excessive stress caused by hard usage. This is due to inadequate component strength. If gears fail, the transmission could lock up, causing loss of control that could result in a crash with injury or death.

Potentially Affected Models:

All 2015 YZF-R1F RN39E-000001~001836
All 2015 YZF-R1FC RN39Y-000009~000801
All 2015 YZFR1MF RN40E-000002~000343
All 2015 YZFR1MFC RN40Y-000003~000135 

©2015 Yamaha Motor Corp.

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