To change the oil on a 1999 Harley-Davidson 883 Sportster, start by warming up the engine to thin the oil for easier draining, then turn it off and let it cool slightly. Place a drain pan under the oil tank, remove the drain plug, and allow the old oil to fully drain out. Replace the drain plug, remove the old oil filter using an oil filter wrench, and install a new filter after applying a bit of oil to the rubber gasket. Finally, refill the oil tank with the recommended type and amount of oil, check the level with the dipstick, and ensure there are no leaks before starting the engine.
Three
The 883 Sportster takes just under 3 quarts of oil
what type of oil for a 1993 Harley Sportster 883
In the compartment under the seat on the other side from the oil reserve
should be 20-50 wt harley oil but check with your dealer first..
Sae20W50
20/50
20w50 motorcycle oil
Under the motor
SAE 20w50 100% synthetic oil.
Should be right at 3 quarts
HD makes a weight of oil they call "Sport-Trans" that is made for use in the Sportster primary. Or, you can use any 30W non-detergent oil.