Missing primary sheave nut may cause engine stall
Defect Summary
Yamaha motor corporation, usa (yamaha) is recalling certain 2015-2020 yamaha xc155 scooters. the primary sheave nut may loosen and fall off.
Safety Consequence
A missing primary sheave nut may cause a stall, without the ability to restart the engine, increasing the risk of a crash.
Corrective Action
Owners are advised not to ride their scooter until the remedy has been preformed. yamaha will notify owners, and dealers will replace the primary retaining nut and washer with one of a new design, free of charge. owner notification letters were mailed on april 28, 2021. owners may contact yamaha's customer service at 1-800-962-7926. yamaha's number for this recall is 990145.
Similar Recalls
Other recalls from Yamaha Motor Corporation, Usa or involving N/A.
FAQ: Recall 21V251000
Your rights, the repair process, and what each field on this page means.
What is recall 21V251000?
NHTSA recall 21V251000 was issued by Yamaha Motor Corporation, Usa on April 9, 2021. It addresses: Missing primary sheave nut may cause engine stall. The recall affects approximately 4,262 vehicles, with the defect involving the N/A component.
How do I get this recall repaired?
Contact any authorized Yamaha Motor Corporation, Usa dealer and reference NHTSA recall ID 21V251000 or the manufacturer campaign number 990145. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
What does "Do Not Drive" mean for this recall?
NHTSA has flagged this recall as Do Not Drive, meaning the defect poses an immediate safety risk and affected vehicles should not be operated until they are repaired. Owners should contact their dealer immediately and may be eligible for free towing or a loaner vehicle while awaiting parts.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.