YAMAHA Santa Barbara Models/Series Timeline, Specifications & Photos

The 1964 Yamaha YA6 Santa Barbara was the first model to feature Yamaha's dramatic new "Autolube" system. Two-stroke oil was kept in a separate oil tank from which a pump caused a steady into the bike's intake chamber (where the rotary valve was located). From the valve chamber it was carried into the crankase with the charge of fuel-air mixture where it lubricated the innards more by luck than management, just like any other two-stroke engine.