Where is the Oil Drain Plug on a Harley Davidson?

Determining where the oil drain plug on a Harley Davidson is all depends on the year of the motor cycle. On most Harley Davidson the the drain plug is a hose that is coming from the tank, you will notice a clamp holding the hose in, if you unclamp it you will then be able to drain out the old oil. It is important for you to change the primary transmission oil after you change the engine oil.