2015–2018 Yamaha XC155, 2015 Yamaha XC155F Recall: Cylinder head nuts may not have been tightened properly and could loosen…
NHTSA campaign 20V277000 · Engine and Engine Cooling · filed May 15, 2020 · verified Jul 30, 2026
The defect
Yamaha Motor Corporation, USA (Yamaha) is recalling certain 2015-2018 XC155 scooters. The cylinder head nuts may not have been tightened properly and could loosen, allowing coolant to foul the spark plug.
The risk
A fouled spark plug could cause the engine to stall at idle and possibly not restart, increasing the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Yamaha will notify owners and dealers will replace the cylinder head gasket and tighten the cylinder head nuts, free of charge. The recall began May 29, 2020. Owners may contact Yamaha customer service at 1-800-962-7926. Yamaha's number for this recall is 990137.
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
Related recalls
More Yamaha XC155 recalls
Other campaigns involving Yamaha vehicles
Source: NHTSA recall database, campaign 20V277000 (manufacturer number 990137). Data last verified Jul 30, 2026.