Try eBay
You can find an owners manual for a Savage Arms Foremost model 6670H, 12 gauge shotgun by contacting the company. The phone number to call for the manual is 413 642-4261.
Your shotgun is a Mossbeg 500. made by them for Sears. Go to the Mossberg website, customer serivce, owners manual, and download the manual for your shotgun.
Try gun shows.
Yes, there is an owners manual available for a Charles Daly Model 500 double barrel shotgun. Various sources can be found online.
This model Cross refernces out to a Remington Sportsman 58, introduced in 1956, the Sportsman-58 was Remington's first gas-operated shotgun. You can request an owners manual for obsolete firearms at www.remington.com click on sportsmans library, then downloads, then owners manuals, then click obsolete owners manuals, you will have to register but it is worth it to get the free manual.
Try want ads and on line auctions.
A guy on eBay has a store called Rediscovered Shooting Treasures (RST). He sells reproductions of the Marlin Model 120 manual.
You may find a reproduction on E-bay.They are listing alot of older model shotgun and rifle owners manuals.You could also look at gunbroker.com.
You can find what you need at webdept@gunpartscorp.com .
Probably at Savage customer service website (Savage bought Stevens in 1920)
Not quite sure which model you have. Use the link below to find the owners manual for your gun. Follow the manual for dissassembly.