Small Engines (Lawn Mowers, etc.): carb, craftsman snowblower, trouble shooting guide

Question
I have an older craftsman snowblower with a tecumseh motor.  I need a carb for it.  but i dont know what model number the carb is.  How do i figure out the model number?  I do have some numbers stamped into the top of the carb? 577 7F29 and there is a 27 cast into the side of the carb.  there are no markings on the motor for a horse power rating or there is not a tag that i can find either.  the only other info i can find is the model of the snow blower itself which is 536 906001.  the motor im guessing is like maybe a 5,6,or 7hp its not real big. thanks alot for the help!

Answer
Hello Kevin:

To View a Breakdown of this Unit Go to this Site Addy, http://www.searspartsdirect.com/partsdirect/index.action?sid=PSHx20080114x00001 and Enter the Model Numbers 536.906001 and Click Search. From this Page you can View Diagrams and Parts Lists for you Equipment Using the "View Sub Components" Section Near the Bottom Left. The Engine Model is Shown in the Wheel Assembly File. This Unit Uses a Tecumseh Engine Model 143.666382. Enter the Engine Model Numbers in the Model Area and Click Search. The Old Carburetor Part Number is Tecumseh #631920 and the Current Part Number is Tecumseh #631954. I Located this Carburetor at Outdoor Distributors (http://www.outdoordistributors.com/ or @ 1-877-707-2787) for $71.86us. Since this is a Tecumseh Engine, I have a PDF Site Addy that May Assist you Also. http://www.tecumsehpower.com/CustomerService/BSI.pdf  .  This Site Addy; http://www.outdoordistributors.com/Tecumseh/tmain.html has a Link to a PDF Trouble-Shooting Guide. Simply Select the Free PDF Download for the Tecumseh Trouble-Shooting Guide. If you Hit a Snag or this Does Not Correct the Problem,  I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. Have a Happy Holiday Season and May the All Mighty Bless You and Yours. Be Safe and Happy. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Comments and Ratings are Greatly Appreciated. Thanks.

Respectfully

John