Yamaha XC155: Engine

Affects Yamaha XC155 · 2015–2020 — about 4K vehicles.

The hazard

A missing primary sheave nut may cause a stall, without the ability to restart the engine, increasing the risk of a crash.

What to do

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.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational