When referring to the side of a unit, the right side is always from the perspective of operation. In other words, when sitting in the driver's seat or when riding a bicycle or when pushing a mower, the right side is the operator's right hand side. In other words the left or right side is determined by facing the rear of the unit.
RIGHT
Meaning of RIGHT in English
English dictionary of automotive terms. Английский словарь автомобильных терминов. 2012