http://stevespages.com/pdf/marlin_15yn.pdf
your marlin was made in 2002-2003.
www.brownells.com
1988.
Your Marlin model 15YN little buckaroo single shot,which was made in the year 1994 will bring between 80-110 dollars in the condition that you describe.
By taking the first two numbers from the serial number and searching, Im getting 1983 http://armscollectors.com/sn/marlinlookup.php
Send me your email & I'll send you a scan of the manual.
I just bought one for $160.00 and found another one for $159.00 So I would say they run 160.00 in real good condition. Ron Nelson
Marlin 336 Owners Manual at Marlin Firearms website: http://www.marlinfirearms.com/pdfs/manuals/MFC_Centerfire.pdf
Follow this link to the Marlin website page for the 795, and you can download the manual for the weapon, which explains disassembly. http://www.marlinfirearms.com/Firearms/SelfLoading/795.aspx
On the main Marlin Firearms website, there is a section labeled "Owners Manuals", from which you can download the manuals of Marlin products in .pdf form. Assembly and disassembly instructions should be included in these manuals. See related link.
If you go to Marlin's web site you can download a pdf file of the manual, which includes instructions on how to disassemble your 1894. http://www.marlinfirearms.com/pdfs/manuals/MFC_Centerfire_1894.pdf
The first step should be to read the owner's manual. You can request a paper copy from marlin, or go the the link below that says MARLIN, and it will take you to the owner's manual. Check that the rilfe is unloaded before performing ANY maintenance.