Where is the primary drain plug on 2005 Harley road king?

The primary drain plug on a 2005 Harley Road King is located on the bottom of the primary case. To access it, you'll need to remove the inspection cover and the drain plug itself, which is typically a hex head screw. Be sure to have a drain pan ready to catch any fluid that may come out when you remove the plug. Always consult your owner's manual for specific instructions and torque specifications.