I don't think so, I read his profile on the AMA's Hall of Fame and he was a Suzuki rider from 1978 - 1984 and then switched to Kawasaki in 1985 but had a knee injury there and retired after the 1985 season. So it was all Suzuki's and then one year on KX's for the Bomber before retiring, so I don't know that he ever raced a Yamaha ever.