Yamaha Motor Corporation, USA is recalling 2,640 model year 2015 XC155F SMAX scooters manufactured September 17, 2014, to October 27, 2015. The motorcycles may have an insufficiently clamped speed sensor lead wire, causing the wire to fatigue and break. If the speed sensor wire breaks, the speedometer will not work, increasing the risk of a crash. Yamaha will notify owners, and dealers will replace the speed sensor assembly, free of charge. The recall is expected to begin in January 2017. Owners may contact Yamaha customer service at 1-800-962-7926. Yamaha's number for this recall is 990111.