How do you change the oil in a 1978 SUZUKI GS 750?

To change the oil in a 1978 Suzuki GS 750, first ensure the bike is on a level surface and warm the engine slightly to help the oil drain. Remove the oil drain plug located beneath the engine and let the old oil fully drain into a container. Replace the drain plug, then remove the old oil filter, installing a new one afterward. Finally, refill the engine with the recommended oil type through the oil filler cap, checking the oil level with the dipstick to ensure it’s filled correctly.