Can you make trigger adjustments on a Marlin 30-30?

Answer 1

No, the triggers on 336 and other Marlin lever actions have no adjustments built in. Some gunsmiths and owners have worked over their triggers to make them better, but most just let them wear in. Aftermarket trigger springs, and mainspring kits are available from places like Wild West Guns, or Dave Clay, to make the trigger feel better. Sometimes this leads to lighter strikes, or misfires, so it's trial and error process. Hope this helps.