I acquired a Marlin 336. It is in good shape but I cannot move the lever. Took the rifle apart and cannot see anything apparent, some wear. It acts like the locking bolt is not releasing, any thoughts.
Try to find a local gunsmith or call Marlin. Could be corroded, have you tried spraying some Break Free CLP or PB Blaster on it & letting it soak in? Do you have any paperwork that shows a breakdown of parts? Might be able to google it & find one on line. Good luck.
