Yamaha Merken Yamaha Xt 250 Yamaha Xt 250 generaties Yamaha Xt 250 1981 Yamaha Xt 250 1981 Yamaha Xt 250 1982 Yamaha Xt 250 1983 Yamaha Xt 250 1984 Yamaha Xt 250 1985 Yamaha Xt 250 1986 Yamaha Xt 250 1987 Yamaha Xt 250 1988 Yamaha Xt 250 1989 Yamaha Xt 250 1990