Model #31AM2N1C799 MTD Snowthrower, Gas

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Question and Answers

Q:

when priming Snow thrower model #31AM2N1C799 the carb leaks air/gas 31AM2N1C799 Mtd Snow thrower

A:



Thanks for the inquiry and for being a valued member.

I am sorry to hear of the issue you're having with the carburetor leaking. I suspect that your carburetor has a stuck needle/float, and is in need of cleaning. Some of these carbs will have an internal check valve that can go bad and cause it to constantly flood. 

I would pull the carb from the engine. With a full can of carb cleaner, a wire brush, and a bread tie wire to poke through and clean the main jet; I would recommend a very thorough cleaning. Start by taking off the float bowl. Douse it very liberally with carb cleaner, and undo the pin for the float, and remove the needle and float. Clean them very thoroughly with the wire brush and carb cleaner. Pay close attention to the seat the needle sits in and clean it well. Once clean, start brushing the carb bowl and body and make sure you get all the varnish out. It may take three or four brushings with carb cleaner dousing in-between. From there, take the straw of the carb cleaner and shoot carb cleaner through any little hole or passageway of the carb. Shoot out the throat of the carb and poke the main jet with the bread tie wire. You have to make sure you get everything the first time, if you leave anything behind, it’s likely to reclog once you have it reassembled. 

If a thorough cleaning doesn’t help the issue, I’d recommend replacing the carburetor. The rebuild kit is almost as much as the whole assembly, so replacing it would be cost effective. The part number is 951-10974A.

I hope this helps and thanks for using SearsPartsDirect.com. We appreciate your business. 

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Jeff Wallace Sr -
Sears Technician
February 10, 2015
A:

Thank you for you time and expertise

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gregg -
February 16, 2015
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Q:

how do i replace the primer assembly? (just the baffle part) 31AM2N1C799 Mtd Snow thrower

A:

Removing the cover will gain you access to replace the primer assembly. It appears by the image of the primer assembly at Sears PartsDirect that the primer is push and snap in installation. Since you have to replace the primer, you can likely pry it out of the cover. Disconnect the fuel line from the old one and reconnect it to the new primer. Push the new primer into the cover and will lock in with tabs.

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Joey S -
Sears Technician
November 05, 2014
Q:

how do i clean the carberator 31AM2N1C799 Mtd Snow thrower

A:

Hello, glad to help.  Thank You for choosing Sears PartsDirect.com. We, at Sears, value your business.
 
I am sorry and do understand your frustration when there is problems in needing to clean the carburetor.
 
Glad to help out.  I’m looking at your MTD Snow Thrower model number 31AM2N1C799 .
 
I am sorry but I can't pull up your carburetor because I need the model number of the engine to do so.   The model number is found on the engine itself.  

Most carburetors for small engines are so bad that they cannot be cleaned because of the ethanol gas.   It destroys the bowl and all the small ports inside the carburetor.   Take the bowl of the carburetor off and see if it is tarnished with white, green, or gold dust and particles.   You can soak the carburetor into some carburetor cleaner and spray it well with it also but 9 times out of 10, a new carburetor is needed.

Most of the engines for carburetors have fuel lines that need to be taken off.  (Good to take pictures so that you know where everything goes when you put it back together).   Take the fuel lines off and then unbolt the carburetor from the engine.   Clean off the old gasket if it is stuck on the engine and always remember to put new gaskets back on the engine.
 
Please "RESUBMIT ANY FURTHER QUESTIONS IF THERE IS ANY OTHER PROBLEMS".
 
Thank you for your understanding in this matter and I hope we can help you with your future questions and repairs.  Thank you for choosing Sears and using our SearsPartsDirect.com.
 

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Larry Jr -
Sears Technician
September 23, 2014

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