In 1976, Honda introduced the worst CB750, namely the CB750A[utomatic]. Although the two-speed transmission included a torque converter typical of an automatic transmission, the transmission did not automatically change gears for the rider?!? The selected gear would remain selected until changed by the rider, or the kickstand was lowered (which shifted the transmission to neutral).
The CB750A used the same engine as the CB750, but detuned with lower 7.7:1 compression and smaller carburettors producing a lower output, 47.0 hp, and the engine was changed to a wet sump type. The CB750A used more fuel than the manual version, and was down on power, which made sales slow and the model was finally discontinued in 1978.