Here's some of the Daisy 790 parts gun I purchased almost two-and-a-half years ago. It was in a cardboard box and priced to low to pass on. At the time, I bought it so I'd have spares for a Smith & Wesson 78G purchased ten minutes earlier. Keep in mind that the S&W 78G and 79G (.22 and.177 calibers respectively) designs were sold to Daisy in the very early 1980's. Daisy renamed them 780 and 790.

1. Daisy Powerline 790

Daisy just changed the 'G' to a '0'. For the most part, the parts are all interchangeable, so simpletons that we are, we write about the guns as though they are identical. If you're new to this blog and need repair information on the Daisy guns, check the blog index for 'Smith and Wesson 78G' as Nick and I have cataloged the bulk of the work there. I had an almost mint 790 that I loaned to a neighbor for squirrel control. He jammed a pellet in the barrel, panicked, did not tell me, then tried to 'fix' the problem by firing more pellets (no, I could not even make this up!).

Daisy Powerline 790

I finally asked him to return the airgun when he admitted he the above and said was just going to throw the gun away!! I have cleared the barrel, but discovered that he stripped the o-ring on the co2 screw cap, so all the co2 leaks out when you puncture. Does anyone know if this requires a 'special' type of o-ring (it is not the traditional black synthetic o-ring found in common applications) or if I can just substitute a regular o-ring. I have not tried to remove the original o-ring since I did not want to cause any more damage than has already occurred. I had also given my neighbor the original box with the manuals.

He threw all that away. Does anyone have the manuals that they could copy/scan and email to me? Thanking you in advance, Sandy (Outspoken1).