Thanks for the torque value TripleJ. Can’t image FLHR being much different.
Just replaced mine last week; no info in service manual on R&R. As was suggested in another post (and I Thank you too), I used some Teflon tape. 2 or 3 wraps about ¼ inch from the end so it starts on with no tape at first. Threads in easy to tape, then tightens quick. Worked fine, no leaks at all.