If ever there was a case of the right bike at the right time it was the Yamaha DT175MX. In 1978!. They were pretty much idiot proof and maintenance consisted of adding petrol and oil. Best of all, the DT was all things to all men. Novices learned there bike skills on them, people commuted on them, and enduro riders thrashed them like thoroughbred race bikes. No wonder Yamaha sold so many!