Hi Jamie … It is out of a Suzuki M15 or M15-2

Never seen the number with a hyphen between the actual numbers, normally just after the M10.

They are a 50c.c. and from around 1964 to 1967.

Cheers … Phil in NZ

Hello,
  I have a suzuki engine, it calculates out to around 50cc's. The
number on the case is m10-369-485.
   Would like to get some parts for it (obvious needs are piston and
rings and shifter side cover, intake setup) (don't know what it
needs that isn't obvious)
  Neat little engine, hoping to learn something about it and get it
running again.

  Thanks,
Jamie.