Go to www.crosman.com and click on "Download a manual" you will find you rifle there. It will give you an exploded view of the rifle.
Crosman 66 Powermaster: 100%=$80, 95%=$65, 90%=$45, 80%=$35, 60%=$20 (50%= no value) Blue book of Airguns
There are 4 different versions of the 66 Powermaster by Crosman. See the link below for all the Crosman rifle models, parts list and owners manuals https://support.crosman.com/hc/en-us/search?utf8=%E2%9C%93&category=200223634&query=powermaster
Go to www.crosman.com and click on "Download a manual" you will find you rifle there. It will give you an exploded view of the rifle.
Thew old model 66 was made between 1983 to 1988. after that the model 66Rt was made from 1993 -1994 the model 66BX was made up to 2005 and the new 66 powermaster is new for 2012
At this point, you need professional help.
I checked the Crosman web site (WWW.Crosman.com) and It says that some parts are still available. You part cost $4.58. Go to crosman and click on "download a manual" find the drawing for the 66 and then contact crosman customer service and see if you can order it.
You can find a parts diagram on the CROSMAN homepage. Click on "Download a manual" (at the bottom of the page ) There you will find an owners manual and parts diagram for the model 66. Parts are still available through Crosman. See the related link.
Crosman corp has schematics and some parts available on-line through their home page. Click on the link below and when it opens, at the bottom of the page, click on "Download a manual." There you will find the information you are looking for.
The FPS listed by the manufacturer is 680 FPS For BB's and 645 FPS for pellets. Field testing produced different results which can be seen below. 1. Gamo Pro Magnums, 7.9gn <--- Pellet Type 5 pumps: High 483, Low 475, Average 479, Difference 8 10 pumps: High 613, Low 586, Average 598, Difference 27 2. Crosman Wad-Cutters, 7.9gn <--- Pellet Type 5 pumps: High 475, Low 465, Average 471, Difference 10 10 pumps: High 601, Low 591, Average 596, Difference 10 So depending on the pellet type and number of pumps the FPS is between 465 on the low side and 613 on the high side with an average of just under 600 FPS for pellets fired after 10 pumps.
The Crosman model 66 Powermaster BB rifle was made between 1983 and 1986. In order to get and estimate of value you will have to state the current condition of the rifle. Is it still working? Is it in Poor, Fair, Good very Good or Excellent condition. without more information it is not possible to give and estimate of value. Re post you question with this information and I will try to give you a reasonable value.
You need to state what condition it's in. without more information it is not possible to answer you.
It all depends on the current condition of the rifle. You have not given description so it is not possible to give an estimate of value