Thunderbird93

I have a 2-stage MTD Snowking (31A-3BAD700) with the Tecumseh 5.5 HP engine that I've had for about 2 years but have rarely used it due to the lack of snow we've gotten last year here Upstate NY.  But last Wednesday I had to pull it out and use it and it fired right up with a few pushes of the Primer. When I went to go use it a few hours later it would not start, and after 4 days I still can't get it started. I want to try ether but not sure where the carb is located, or is there something else I can do. I'm fairly mechanical so I can do most things. How hard is the carb to get off so I can clean it? Any ideas? Thanx.