There are about 50 stunt performers listed on IMDB, the first one in the list says
Mickey Gilbert … stunt coordinator / stunt double: Lee Majors / stunts (35 episodes, 1981-1986)
You might find something elsewhere that claims he did his own, but generally Hollywood doesn't like it, because of the dangers of losing production time if the star is injured… or worse.
It's always possible a star did some of the less risky stunts, but usually only if their face would really be in shot - no CGI in those days.
Even today, most stars do not do their own stunts. Only the very rich & 'powerful' ones, who are usually also producers of the movie, so accepting some of the financial risk already. Tom Cruise & Harrison Ford spring to mind, though I think Ford is down to just a bit of horse riding these days - he is 80 after all.
Some who are also known for martial arts etc do too, but your 'just an actor' tends not to.