Quick Answer
Common issues with the Marlin 336 include jamming, misfiring, and excessive wear on the lever. These problems often stem from poor maintenance, worn-out parts, or incorrect usage. Troubleshooting these issues requires a systematic approach to identify the root cause.
Inspecting and Cleaning the Rifle
When a Marlin 336 jams, it’s often due to a buildup of debris or fouling inside the rifle. First, inspect the rifle for any visible obstructions, such as a bent or damaged firing pin or a misaligned breech face. Next, disassemble the rifle and clean it thoroughly using a soft brush and a solvent like gun cleaning solvent. Pay particular attention to the lever, breech face, and firing pin, as these areas are prone to wear and buildup.
Adjusting the Lever Action
If the rifle is misfiring or failing to eject cases properly, the lever action may be out of adjustment. To adjust the lever action, first ensure the rifle is unloaded and the lever is in the down position. Next, turn the lever screw counterclockwise to loosen the action, then reassemble the rifle. Using a feeler gauge, check the clearance between the lever and the breech face. A clearance of 0.003 to 0.005 inches is ideal. If necessary, adjust the lever screw to achieve the correct clearance.
Addressing Excessive Wear on the Lever
If the lever is showing excessive wear, it may be necessary to replace it. However, before replacing the lever, try to identify the root cause of the wear. Inspect the rifle for any signs of over-tightening or over-lubrication, as these can cause premature wear on the lever. If the wear is due to heavy use or neglect, consider replacing the lever with a new one. When replacing the lever, use a torque wrench to ensure the new lever is installed correctly, and apply a thin layer of lubricant to the pivot pin to minimize wear.
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