The Marlin lever action is easy to disassemble!
1. Open the action, leave the lever straight down!
2. Remove the hinge screw that the lever pivots on!
3. Pull the lever straight down and out!
4. Watch out for the cartridge ejector! (It just sits inside, on the left and is held in place by the bolt!)
5. Pull the bolt straight out through the back!
SUGGESTION: Leave the rifle laying on it's left side during disassembly! This way, the ejector will most likely stay right where it's supposed to be and you can see it for reassembly!