With a longitudinal engine you can always tell which way the engine rotates by revving it in neutral with the clutch lever pulled while stopped. If the bike (tries to) rotate to the left, the crank is rotating to the right, and vice versa. As I recall, the bike tries to lean left, so the engine would be rotating right (clockwise viewed from the rear of the engine or anti-clockwise viewed from the front of the engine.
It's the same effect as a helicopter that loses its tail rotor.