How to Troubleshoot a Crosman Air Gun

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Crosman has been producing quality air rifles and air gun ammunition since 1923. Crosman products include classic air guns such as the Pumpmaster Model 760, break-barrel air rifles, biathlon trainers and air pistols. As with all air guns, problems can arise from time to time while in the field. General problems include poor range performance, jams and mechanical failure. When problems occur, knowing how to effectively troubleshoot your Crosman air rifle will ensure that you can continue operating the weapon after maintenance.

  • Check to ensure that your lubricant reservoir is at the required level for optimal operation. This can cause mechanical malfunctions if not properly maintained. As all Crosman air guns vary in lubrication requirements, consult your specific manual for adding oil or lubricant.

  • Point the muzzle in a safe direction and inspect the chamber or feed tube if the weapon doesn't fire. Typically, a pellet or BB may jam inside the chamber, causing the rifle not to fire, or other debris may be inside the barrel or chamber. Place the weapon on "Safe." Look inside the chamber or feed tube to locate and remove the jam or debris. A slender pointed tool or tweezers can be used to grab jammed ammunition or other debris.

  • Check all O-rings, air seals and pistons if the weapon isn't shooting at its indicated velocity range. Low air pressure causes poor range performance. Consult your specific manual to access the O-rings, seals and pistons. Look for any visible damage or worn spots. Replace the items if needed.

  • Check the CO2 cartridge, if the gun is so equipped. Often, poor performance is caused by low CO2 levels. You may hear a loud burping sound, or the weapon won't fire properly when the CO2 is low or empty. Ensure that the CO2 cartridge is properly installed and sealed correctly. Installing a fresh cartridge generally corrects this problem.

  • Adjust your sights or scope if the weapon isn't firing on target accurately. If no other problems are evident, fine tuning the sights or scope will bring your shots back on target. Often, the sights can become out of tune through transport, improper storage or dropping the weapon. Consult your specific manual for detailed sight adjustment procedures.

Tips & Warnings

  • Disassemble the air gun to check for any evidence of corrosion on metal parts. This can cause poor performance over time. Look for any rusted or worn parts and replace them as needed.
  • Always ensure that you have an adequate backstop when firing a Crosman air gun.
  • Never point a Crosman air gun at anything that you do not intend to shoot or kill.

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