The 2100 can be a juggling act to get back together. If you have to open the valve up check to make sure that stem on the exhaust valve moves freely in the valve body. The only other thing that I can think of is that the check valve spring is too stiff and it isn't letting the valve open like it should. Make sure the pin on the striker is not hanging up in the bolt and that the striker is able to move freely in the tube. If the valve rebuild went well the striker is where I would start. My first thought is the striker/ hammer spring is weak and not opening the exhaust valve far enough or holding it open long enough.
Having air left in the valve after only 10 pumps isn't normal. There were enough parts to bolt together to make sure it was shootable and it has turned out to be a good shooter so far. I'm not saying the 766 is better than the 2100 just that the 2100 is less expensive to make and the reason you can get a 600+ fps pumper that will put pellets inside a dime at 10 yards for around $60. There are some differences, most of which seem to be to make production easier and cheaper. A lot of the parts for the 2100 have a 766 prefix, it was nice of Crosman to continue to use the same parts through the years otherwise it would be much more difficult to find the parts I need. I am ordering parts from the parts list for a late model 2100. Parts are no longer available from Crosman as they quit making this version of the 766 in 1981. Replacement Parts (OEM) Crosman ® Crosman® View. This listing is for a Factory Service Manual for the Crosman model 766. Details about Crosman 766 Service Manual With Exploded. Theshootingshow 639,293 views.Ĭrosman 766 Rebuild Kit - Repair. The Airgun Show – Hectic daytime rat shoot, PLUS top night hunting shots with Nite Site - Duration: 22:41. Repair instructions and Disassembly/Assembly pro. I his manual is intended as an informational guide in servicing Crosman products. My rifle is the second variant of the 766. The third version was renamed and became the 2100 in 1983. The second variant had a tapered metal barrel housing and the third variant had a straight metal barrel housing.
There are three variants of the 766, the first version had a tapered plastic barrel housing.
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