ANSWER: There is a tube underneath the engine right in front of the rear tire with a plug secured by a clamp. Remove that plug and let the oil drain into a containor. Replace the oil with fresh in the oil reservoir on the right side underneath the seat.
The 883 Sportster takes just under 3 quarts of oil
what type of oil for a 1993 Harley Sportster 883
amsoil 10w 30 the best money can buy
20/50
Sae20W50
20w50 motorcycle oil
Under the motor
SAE 20w50 100% synthetic oil.
Three
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.
through the clutch inspection cover