FPV - How to Repair an 18 Year Old Crosman PumpMaster 760

In this video, I show you how I fix my 18 year old pumpmaster 760. A lot of people have these old guns laying around, and they most likely do not pump very well, if at all. Most likely, the rubber o-ring and one rubber pump cup are old and need replacing.

In my case, I modified the existing materials to work again, but I would suggest that most people just replace existing with new. The gun itself is only worth $30, so I figured why spend $15 on parts?
The gun works like new, except the pump is a little loose and doesn't hold itself in, other than that, it shoots with as much muzzle velocity as day 1.

Hope this video helps many out there revive life into their old 760's!

Cheers.

David.

Category:

Education

Tags:

• pumpmaster
• 760
• repair
• diy
• fix
• old
• seals
• air
• gun
• rifle

[Asys1985]

Thanks for this video. Can you somehow increase the velocity of this rifle btw? Don't think it reaches up to the specs that it should be.

[DavidSunshine867]

@Asys1985

Anytime.

I don't think so, the strength of the compression chamber and seals would break at higher pressures. For instance, you can pump 10 times and be at max power, if you pump more, you'll just damage the gun.

You need to buy a different gun if you want more power, this one's maxed out.

The next step up is the Ruger 10/22. Lol. It's a great rifle.

[alsomeguy13]

Hey this helped me alot,but,i cant see the thr trigger finctions right can u make another video on puting the trigger stuff all together

[DavidSunshine867]

@alsomeguy13

Hey man, ya my vidoe of the triger grupo ins't the bset but I'll mkae antoehr veido to sohw you mroe crlrleay! I dno't maen to be csnnuoifg.

Crehes.

Diavd.

[DavidSunshine867]

Great to hear it could be of help!

Glad to hear you got ur 760 back in action.

Cheers!

[Asys1985]

What kind of BBs would you recommend, the Steel Copperhead ones or the leaded BBs?

My 760 is with a riffled barrel and heard that the steel BBs can mess up the riffling?

But the leaded BBs tends to roll out there barrel sometimes wich can be abit annoying.

[soyjok3r]

Thanks a lot this video helped me put it back together after it jammed

[alsomeguy13]

@DavidSunshine867 thanks man

[gilbet]

Excellent video!  I was wondering, are there any steps we can skip? (trigger,etc)

[TheDirtbikerider14]

thank you :) this helped me very much. mine was jammed somehow and i didnt know how to take it apart and put it back together without messing it up.