Washer for Gearbox ( 0.9mm ) $ 6.05 SKU: 90201-206E5 0.9mm thrustwasher. Back to: Transmission and Driveline ×Close Yamaha Yamaha is a leader in businesses ranging from musical instruments and audio & video products to information technology products, new media services, home furnishings, auto components, specialty metals, music education and resort facilities. http://www.global.yamaha.com/ Description Suit 1st wheel gear on 1991 onwards models. Also suit 2nd pinion gear on 1988 - 1990 models.