This Free pdf gives you the information you need to work with your enfield.
I personally have never owned one of these fine pieces of American history, but I have always wanted to.
The M1917 Enfield, formally named “United States Rifle, cal .30, Model of 1917” was an American modification and production of the .303-inch (7.7 mm) Pattern 1914 Enfield (P14) rifle (listed in British Service as Rifle No. 3) developed and manufactured during the period 1917–1918. Numerically, it was the main rifle used by the American Expeditionary Forces in Europe during World War I.
I keep this manual around though in case I have a student that has a question.
As I have said before, holding a firearm instructor certification does not automatically grant special powers to know everything about guns. I know some instructors that think it does, but personally, I know that in every class I have some student that knows something about guns that I do not. I try to share what I do know, and learn from those that have knowledge I don’t. I keep a bunch of these gun manuals around in case I get questions – its easy to go to the manual rather that guess an potentially break a student’s gun.
You can only do that so many times before you don’t have students.