How to Replace Seals in a Crosman 1077

By Sarka-Jonae Miller

The Crosman 1077 is a popular air rifle known for being lightweight and relatively quiet. It is a 12 shot repeater that, when working, is durable and easy to load. A leaky cartridge indicates a new seal is needed in the CO2 cartridge. New seals are very cheap. This article tells you how to replace CO2 seals in the Crosman 1077.

Replacing CO2 Seals in a Crosman 1077 Air Rifle

Take out the CO2 cartridge. Check that the gun is not loaded.

Use your screwdriver to unscrew the three screws at the bottom of the stock. The stock is the entire black part of the rifle including the barrel and grip.

Unscrew the CO2 assembly screw.

Use a toothpick to gently push the old seal out.

Replace the seal and reverse the steps to put the gun back together.

About the Author

Sarka-Jonae Miller has been a freelance writer and editor since 2003. She was a personal trainer for four years with certifications from AFAA and NASM. Miller also worked at 24 Hour Fitness, LA Fitness and as a mobile trainer. Her career in the fitness industry begin in 2000 as a martial arts, yoga and group exercise instructor. She graduated cum laude from Syracuse University.