• No more parts from Crosman. ;^( Not sure if any other guns use that same part. Don't know who would have them. But you can file the big piece flat, where it broke, and drill it so the little piece fits in the hole and then glue it in place. Straighten the spring the best you can. Expect that will werq just fine.

  • This reply was modified 1 month ago by biohazardman.

  No more parts from Crosman. ;^( Not sure if any other guns use that same part. Don't know who would have them. But you can file the big piece flat, where it broke, and drill it so the little piece fits in the hole and then glue it in place. Straighten the spring the best you can. Expect that will werq just fine.

  There comes a time when dealing with old guns. Both air and powder. Where you will just have to make replacement parts. The plus side to that is some times you can make the parts better than the original. If you can find a hobby machinist in your area they can probably make that whole part fairly easy and out of metal.
  Your only other option is buying a parts gun. But remember. It may have the same issue as the gun you already own.

  There comes a time when dealing with old guns. Both air and powder. Where you will just have to make replacement parts. The plus side to that is some times you can make the parts better than the original. If you can find a hobby machinist in your area they can probably make that whole part fairly easy and out of metal.
  Your only other option is buying a parts gun. But remember. It may have the same issue as the gun you already own.

  I also have a nonworking 766. Yes, the 378 at the front of the SN indicates March 1978. The Crosman website has manuals and parts lists you can download. Just search for 'Crosman parts list' and it will pop up. You can then search for 766. Parts are no longer available unless used in a current gun. Check your parts diagram, the part number will give you an indication. A 2100 part number is used on current 2100 guns, etc. Hope this helps and good luck with your repairs.

  I also have a nonworking 766. Yes, the 378 at the front of the SN indicates March 1978. The Crosman website has manuals and parts lists you can download. Just search for 'Crosman parts list' and it will pop up. You can then search for 766. Parts are no longer available unless used in a current gun. Check your parts diagram, the part number will give you an indication. A 2100 part number is used on current 2100 guns, etc. Hope this helps and good luck with your repairs.

  There is a guy in Canton not far from you he may have parts. Phil's vintage airgun repair

  There is a guy in Canton not far from you he may have parts. Phil's vintage airgun repair

  Is this that spring ? From a different model but will it work ???

  • This reply was modified 1 month ago by GoldenStateAIRGUNer.

  Is this that spring ? From a different model but will it work ???

This listing is for a Factory Service Manual for the Crosman model 766 pump air rifle. This is a nice printed copy of an original factory service manual. Seven pages of invaluable information, including the Exploded View & Parts List. How to Disassemble / Reassemble a Crosman 766 / 2100 Pellet / BB Rifle.Manuals can be found here: you have.

Crosman 766 Repair Manual

• Locate the safety directly in front of the trigger.
  
• Push the safety from the left side all the way in. The safety is not 'On Safe' unless it is pushed all the way in and the RED ring around the safety is not showing. The air rifle will not fire when 'On Safe.' Even when the safety is 'On Safe,' you should continue to handle the air rifle safely. Do not ever point the air rifle at any person.
  

• Push the safety from the right side all the way in. When you can see the RED ring around the safety, the air rifle is 'Off Safe' and can be fired.
  

• Open the forearm all the way until it stops. Be sure to hold the forearm firmly as you open it. It could spring back into the closed position, possibly causing injury. Place your hands in the same positions shown in Fig. 3 in order to avoid being pinched, should you lose hold of the forearm. Do not twist the forearm while pumping. Use straight strokes to prevent breakage.
  
• Be sure to use at least two pumps (but not more than 10) to prevent the barrel from jamming with a BB or a pellet remaining in the barrel after firing.
  
• Return the forearm to the original closed position with a smooth stroke. Be sure to hold the forearm firmly as you close it to prevent it from springing open and possibly causing injury.
  

Crosman 766 Manual Free

Crosman 766 Manual Online