Hello, my name is Tony and I have agreed to help a friend service and maintain their black shadow. The bike has sat stable for 5 months now in a secure garage. My friend is not physically able to do this work themself and my first tasks are to drain the oil and fuel, replace the battery and fuel and oil filters, to get it ready for regular starting and short riding. Is anyone willing to advise me on best techniques for draining old stale fuel and oil. I would greatly appreciate your assistance to me in servicing and maintaining this wonderful old bike.