NHTSA (USA)Critical
2015–2018 YAMAHA SR400NHTSA Campaign #18V730000
The official notice
Defect
Yamaha Motor Corporation, USA (Yamaha) is recalling certain 2015-2018 Yamaha SR400 motorcycles. The engine oil line flare nut may be insufficiently tightened, allowing oil to leak onto the rear tire.
Safety Risk
An oil leak onto the rear tire can cause a loss of control, increasing the risk of a crash.
Remedy
Yamaha will notify owners, and dealers will inspect the flare nut connection. If oil is not leaking, the nut will be tightened. If oil is leaking, the engine oil line will be replaced and the flare nut will be tightened, free of charge. The recall began October 31, 2018. Owners may contact Yamaha customer service at 1-800-962-7926.
1,902 vehicles affectedUpdated June 10, 2026