Stevespages has copies of the owner's manuals for a LOT of guns-
page7b
Be a sport and send him a couple of bucks to defray costs- heck of a public service.
gunpartscorp.com (website for Numrich) has parts drawings on site for a LOT of guns, and more that you can buy for couple of bucks.
Most US gun makers have owner's manuals on their website, and Remington will send you a copy of any manual not on the site.