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Yamaha Smax Recall 21V251: Loose Engine Nut Can Stall Scooter and Raise Crash Risk

NHTSA campaign 21V251, reported April 9, 2021, 4,262 vehicles potentially affected.

What this recall means for you

The primary sheave nut on certain Yamaha XC155 scooters may loosen and fall off. If the nut is missing, the engine may stall and cannot be restarted, which increases the risk of a crash.

Yamaha advises owners not to ride the scooter until the repair is completed. Dealers will replace the primary retaining nut and washer with a new design at no cost to the owner. Owner notification letters were mailed on April 28, 2021. Owners can also contact Yamaha customer service at 1-800-962-7926, referencing recall number 990145, and can check their VIN for open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 21V251Yamaha Motor Corporation, USA
Component
ENGINE
Problem
Yamaha Motor Corporation, USA (Yamaha) is recalling certain 2015-2020 Yamaha XC155 scooters. The primary sheave nut may loosen and fall off.
Risk
A missing primary sheave nut may cause a stall, without the ability to restart the engine, increasing the risk of a crash.
Remedy
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Affected vehicles

Yamaha Smax201520162017201820192020