I have extensive resource books on airguns. But can not find anything about the model 1800. I do know that it exist. It was the model 1800 powermatic. I think it is similar to a model 1600 powermatic but I do not know the difference. I suggest you contact Crosman Customer service and ask for an owners manual
see the link below for the 1600 owners manual and Crosman customer service web page.
This model was made for Sears by Crosman. It is a Crosman model 160. For the owners manual see the link below.
Most makers have manuals on line or will supply one for free if you contact them. -----------------------New answer----------------------------------- See the link below for the Crosman model 160 Owners manual.
Crosman Corp still has the Owners Manual online. You can find your manual here. see the link below
Unfortunately the parts manual is no longer available from Crosman but the owners manual is. See the related link.
Around $110. It was made between 1950-54. its a .22 caliber. If you have the original C02 cylinder spare tank DO NOT USE IT. Crosman had warned owners. If you have the tank then you can add 30% to the collectors value. For the owners manual see the link below.
See the Crosman link below and select your rifle for the diagram and owners manual.
Crosman Corp still has the Owners Manual online. See the link below)
If you have the original C02 bottle. Crosman warns you NOT to use it. see the link below for the owners manual from Crosman.
The Crosman 400 is rated at 450 FPS. See the link below for the owners manual
Crosman does not own Marksman. Crosman made a Repeatairmodel and Marksman made a Repeater model. See the link below for the Marksman Repeater owners manual.
Would you like to see the "Owners Manual" for the V350. Crosman has it online. See the link below. The loading port in on top of the barrel.
I believe Crosman never made a model B661 (But I may be wrong) I've searched the web and 5 different Catalogue Airgun books and can not find any reference to a Crosman Model B661.