You can get a manual for free by going to Ruger's web site and requesting it.
Not enough information to answer.My information which was found in ruger and his guns,indicates that this block of serial numbers was assigned to the ruger standard semi-automatic Mark-1 .22cal handgun in 1974.
50-200 usd
50-200 USD or so
50-200 USD or so
Magazine
No such Ruger ever made
Primarily in the magazines; Mark II has a bolt hol open also
25-125 USD or so
Go to Ruger's web site to find out.
Get your hands on an owner's manual (available from Ruger for free or eBay for a few bucks) which will have disassembly instructions or buy the Gun Digest Assembly/Disassembly volume for automatic pistols from the Gun Digest website. You can also go to Ruger's website and READ a Manual for the Mark I... http://ruger.com/Firearms/PDF/InstructionManuals/48.pdf
Assuming you mean Mark II. $250-$350, depending on barrel, sights, etc
Ruger's web site has sn tables.