MTD 22" dual-stage with possible bad carb - Snowblower Forum : Snow Blower Forums
 
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post #1 of 6 Old 04-25-2015, 07:40 PM Thread Starter
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MTD 22" dual-stage with possible bad carb

Hi,
I have an MTD/Sears 31A-32AD762 96098 22" snowthrower that was given to me the other day. It appears to be a model pretty popular at Lowes/HD.

I'm relatively handy with tools and engines and I think I've narrowed this down to a bad carb. It likely wasn't properly stored, and the carb is now filled with gunk.

I emptied the gas tank, changed the spark plug, took the float bowl cover off and cleaned it, put some new gas in, and it still doesn't start. Sprayed a bit of starter ether and it then starts momentarily. That's what makes me think it's just not getting a sufficient amount of gas.

Is this perhaps a known problem with this model/make/carb?

It looks to be quite a process to take the carb apart. Any ideas which parts I should replace? Perhaps the whole carb? Idea of a part number?

I've also broken it down to the point where the covers are off, the gas tank is removed, and the air intake is visible. I don't know how to get the remaining cover off which actually reveals the carb. Ideas for removing the last cover connected to the throttle, primer button, and key would be appreciated.

Thanks,
Dave
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post #2 of 6 Old 04-25-2015, 10:11 PM
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Hello and welcome to the forum gossamer. Here is a link to the service manual "I think" you need. Be SURE you re-install the carb gaskets so all the holes line up correctly. If you have any problems, come on back and someone here is always happy to help.

http://service.mtdproducts.com/Train...horizontal.pdf

Operators Manual-
http://www.manualslib.com/manual/506...page=21#manual

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Last edited by Grunt; 04-25-2015 at 10:14 PM.
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post #3 of 6 Old 04-26-2015, 07:31 AM
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Welcome to the forum Dave

Please add your location to your profile.

It's always a good idea when asking engine questions to include the engines numbers too as it might not be the original engine.

Here is a link to videos on rebuilding Tecumseh carbs. https://www.google.com/#q=donnyboy+tecumseh+carb

On youtube, Donnyboy73 's videos are a great resource for almost all problems with small engine equipment.

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post #4 of 6 Old 04-26-2015, 08:24 AM
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hello dave, welcome to SBF!! if the price of a new carb is cheap enough I would get a new carb rather than rebuild the old one unless you just want the experience

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post #5 of 6 Old 04-26-2015, 02:29 PM
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As for parts, I recently had to buy a part for an MTD push mower. So I web-shopped around, and found that the MTD parts site was the cheapest. $2.49 shipping too.

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post #6 of 6 Old 10-25-2015, 01:40 PM Thread Starter
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Quote:
Originally Posted by Grunt View Post
Hello and welcome to the forum gossamer. Here is a link to the service manual "I think" you need. Be SURE you re-install the carb gaskets so all the holes line up correctly. If you have any problems, come on back and someone here is always happy to help.

http://service.mtdproducts.com/Train...horizontal.pdf

Operators Manual-
MTD 31A-32AD762 Operator's Manual (Page 21 of 52)
Thanks very much for your help. It was last April when I started working on this, and now really need to get it going. Hope it's okay to follow up on this thread after so long.

I just wanted to confirm that I have the proper engine manual. I have model 31A-32AD762, although the manual you sent says it's for models 61/65/70 horizontal crankshaft engines.

I'm assuming it's extracting the 61/65/70 from the last two digits of the model? So mine would be 62, although I don't see any manual for that model.

Is there some other label that can uniquely identify my model, or can we be pretty sure this is the proper one?
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