What should my machine’s drive rotation be?

Check the service manual first due to the many variations that manufacturers use. The motor always needs to rotate opposite of the process’s direction. The top master weight should follow the bottom master weight by 90 degrees approximately. So if your process is travelling counter-clockwise then your motor should be going clockwise and when the bottom master weight is at 6 o’clock the top master weight should be at 3 o’clock.