Hi
Sounds like a clogged carb which is a common problem for snowblowers due to they set around more then they get used and gas turns stale and clogs carb. Most of the times the problem is in the bolt that holds the carb bowl on it should have 2 or 3 small holes in it. Check that the holes are all open and clean if this does not help you will need to remove and clean whole carb.
Sam
Please vote

I have the manual to this snowblower as that is the brand and model number I own. If you need me to copy it, I'd be happy to make one for you.