30 30 Marlin Lever Action How Do You Get The Barrell Off Of A Marlin Model 336 30-30 Lever Action. Is It Threaded If So Right Or Left?

How do you get the barrell off of a Marlin model 336 30-30 lever action. Is it threaded if so right or left? - 30 30 marlin lever action

I think it is by looking at the drawing, but you can not lose. The weapon is a little rusty, so I would like to once again harmonize in blue.