How do you Clean an air rifle?

Buy a .177 Cleaning rod kit for your air rifle ( If it's a .177 caliber.) DO NOT use any cleaning agents that are used for regular guns, the solvents will ruin the o-rings in the air gun. If it's s break-barrel rifle, break open the barrel slightly ( Don't cock it) and push a clean swab in from the rear of the barrel. Replace the swab several time until you get a clean swab. Do not use any oils on the barrel like 3-n-1. just use Air gun oils like the ones from RWS or Crosman. Wipe the rifle down with a clean rag with a few drops of air gun approved oil. Lubricate the joints with a few drops of Crosman or RWS oil. Clean the rifle about every 1000 shots or sooner if necessary.

I would not use any other cleaning oils other than approved Airgun oils

See the link below for Air Rifle cleaning kits.