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My 880 will only store a single pump. After pumping, if released the pump handle will spring back as if the air is only stored between the air chamber and the pump head. Took the rifle apart and replaced all the seals per your videos without success. Any suggestions?
Ron Fortier
You will need to replace that rubber cup shaped thing that acts as the check valve. In the pre 2000 880’s, it looks like a cup in the post 2000 880’s it looks like a cup with a hole in the middle. They are both sold on ebay. Older ones cost upwards of $20 because they are custom made.
Good luck.Thanks for the reply. Rather than pay an outrageous price for the seal, I inserted two o-rings (20 cents) into the recess of the seal, on top of each other, to expand it, and it corrected the problem.
Ron
