How do you start breakdown of crosman 1377 the pin that holds pump lever doesn't appear to come off easily

SOURCE: My crosman 1377 won't pump up. Is there a

Hello. Go to this site and down load the manual and the parts diagram for your pistol http://www.crosman.com/airguns/service/manuals/crosman-pistols

This info will give you knowledge to identify the faulty part. Hopefully they still have it available. J.

SOURCE: Older Crosman 1377 Air Pistol. Believed to be bad

Yes. This is as simple as replacing O-rings and seal bushings. you may get out for less than $5 worth of supplies. Just be sure to label everything as you take it out of the gun and lay out the parts in the order you removed them. this will make reassembly MUCH less painful. Oh yeah.... remember to clean and oil the parts as you put them back in.

Testimonial: "Very helpful. Will now try to do it. "