What is the trans oil level in a 1982 ironhead Harley Davidson?

pull the primary plugs out of the primary case on the lefthand side of th bike,there should be two.fill the primary with 20/50 oil .the bike should be held upright.when oil starts to come out of the lower primary plug,stop adding oil.when the oil stops coming out of the hole (dripping).it is full (about 1 and 1 1/2 quarts) replace the primary plugs.it should be full at this point.