I have read about others repairing them on 8N's and hundred series but I have never tackled it, figured there ain't nothin in there my club fingers could work on with that wasn't already tore up. This is one of the things I will just buy when it needs to be replaced or like you said put an electric on it which to me is more accurate than the cable driven as I want to know how many hours the engine has been running. An hour with the electric is an hour where as the hour on the mechanical maybe several hours depending on the rpm of the engine.
If you do tackle it make a picture diary of the work.
If you do tackle it make a picture diary of the work.