Yamaha Motor Corporation, USA (Yamaha) is recalling certain 2015-2020 Yamaha XC155 scooters. The primary sheave nut may loosen and fall off.
A missing primary sheave nut may cause a stall, without the ability to restart the engine, increasing the risk of a crash.
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.
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.