Where is the oil drain plug on a 2006 Yamaha roadliner?

The oil drain plug on a 2006 Yamaha Roadliner is located on the bottom of the engine crankcase. It's typically a large bolt, often with a hex head, towards the rear of the engine.

However, you should consult your owner's manual for the precise location and any specific warnings or instructions. The manual will have diagrams and specific details that are crucial for correctly identifying and accessing the drain plug. Improperly draining your oil can damage your engine.