How do you change the oil on a 1992 ultra Harley Davidson?

On my 92 utra,the drain plug is on the oil tank. With the engine warm,the oil is thinner & easier to drain.I remove the right side hard bag.Then remove the screw that holds the oil tank cover & take the cover off.You will see a 7/8" plug at the bottom of the tank.Try to get a funnel under it or it dumps on the exhaust pipe.Also remove the screw on filter on the front of the engine. I let it drain over night,& lean it to the right for a bit, to get it all out. Then put everything back together & fill with 4 qts & your done. No easy way to drain the bottom end,but it only holds a small amount.If your tank check valve is good,98% of the oil is in the tank & filter.