Set the safety and cycle the action until the magazine is empty.
Your Marlin model 336 was made in the year 2000.
It's a version of the Marlin 336 lever action rifle that was made for KMart back in the day.
With the serial number that you have supplied,your Marlin model 336 was made in the year 1982.
Your serial number indicates that your Marlin model 336 lever action rifle was made in the year 1980.
Your serial number indicates that your Marlin model 336 lever action rifle was made in the year 1974.
Marlin 336 Owners Manual at Marlin Firearms website: http://www.marlinfirearms.com/pdfs/manuals/MFC_Centerfire.pdf
1981
Your Marlin model 336 in the condition that you describe will bring between 300-375 dollars.
your marlin is valued at between 200-350 dollars depending on the overall condition of your rifle.
U is for 1961
1955
Sereal numbe F25405 336 a 32 special , how can I find retail and wholesale value ?