I have a model number 536.918301 24" craftsman snowthrower. I would like to know what year it was manufactured.

Hi,
Manual does not seem to be available, but the parts breakdown is. There is a four digit number after the 143... number on the engine that is YDDD where Y is the last digit of the year and DDD is the day of the year between 1 and 365 on a non-leap year.
Peace,
Clarke

You got me confuse