Yamaha Merken Yamaha Xt 600 z t n r Yamaha Xt 600 z t n r generaties Yamaha Xt 600 z t n r 1988 Yamaha Xt 600 z t n r 1989 Yamaha Xt 600 z t n r 1990 Yamaha Xt 600 z t n r 1991
