How do I clean Remington 241?

I've never even seen a bolt action version of the Remington Nylon 22's. So, I won't guess this one. Try eBay. There is a guy selling copies of the Original Manual for this gun. Reference: eBay Item...

You can request a owner's manual for fee at the Remington web site. A local gun smith could also help.

100-1000 USD depending on specifics

On the bottom is a large screw. Remove the screw and the receiver and the barrel will come off. Once you have that off, use a screwdriver on the back of the receiver to loosen the receiver plug....

Follow the instructions in the owner's manual. If you don't have one, you can request one from Remington on their web site.