How to take apart Coast to Coast Marlin 22 cal long rifle Model 00550
The same way you would clean any Marlin lever action rifle. These models are of the same design of a Marlin 30-30.
Contact Marlin customer service through their website, and request an owner's manual for your rifle. They are free.
my old trick is baking soda and vinigar that always does the trick
Go to stevespages.com/page7b.htm and look for the manual.
about $200 max if very clean
You clean the bore with brass and cloth 'pull throughs' and Hoppes fluid. Wipe the outside of metal lightly with an oily cloth and woodwork with a light wax.
Serial numbers were required per a 1968 firearms act. Marlin .22's produced prior to this were not required to have serial numbers stamped on the weapon and marlin decided it was not productive to do so. Although they did stamp some earlier models they discontinued the practice. My Marlin model 56 made in 1960 also has no serial number.
http://www.marlinowners.com/forums/index.php/board,89.0.html will cover all your questions
use hoppes bore snake in 22 caliber best i have ever used
1 marlin several marlin.
$165