tess: don't hold your breath waiting on them for any manuals. most times they'll just ignore requests like yours.
the carb on that saw is a common one I'm sure. and pulling it off the saw to clean/rebuild it is pretty easy.
if we can get some pictures of the carb, we can tell you what kit you need and walk you through the process of getting that carb back up and happy again.
after that, it's the tuning....