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I'm trying to identify a tecumseh lawnmower carb that came off a snowblower. I have scoured the internet and have had zero luck... The bowl nut is part# 632385. All I'm seeing is the bowl nut is used on CCR Toro's. NOTHING with a push to prime. Any help would be highly appreciated.

Look for the manufacturing number and then post it.


But I think is a Dellorto carburetor which I have no info on.

Looks to me like a Tecumseh #640278, but I’m running into a memory problem. Looking at your pic I don’t think that that carb came on a snowblower engine, as it is most commonly used on mower engines. Are you sure that it is the original carb? Do you have any numbers off the engine ID tag?

Rivets said:

Looks to me like a Tecumseh #640278, but I’m running into a memory problem. Looking at your pic I don’t think that that carb came on a snowblower engine, as it is most commonly used on mower engines. Are you sure that it is the original carb? Do you have any numbers off the engine ID tag?

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I know this is a mower carb. 640278 is not the correct carb. carb 640278 uses 640050 as the bowl nut. no bueno.

Now I’m totally confused as to what you are looking for. I identified the carb in your pictures. Are you trying to find a lawnmower carb which uses specific snowblower carb bowl nut?

Rivets said:

Now I’m totally confused as to what you are looking for. I identified the carb in your pictures. Are you trying to find a lawnmower carb which uses specific snowblower carb bowl nut?

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No.. I'm trying to identify the carberator part# man. That carb you listed it similar but it has a manual choke lever to connect a linkage which mine doesn't have.

Find me a tecumseh push to prime carb that takes the bowl nut with the huge main jet. It's a fixed jet (non adjustable) so I'm thinking it came off a machine from the early 2000's or later. possibly a 2 cycle engine.

Good luck in your search. Finding the specific carb which uses a specific main jet is not easy. Just as your carb came from a mower, I’m willing to bet that the jet came from a blower. Probably a “fix it job” done by a “DIY GUY” from his “ I’ve got something that will work” scrap box. If you find what you are looking for, I recommend you also go buy yourself a lottery ticket.

Maybe this website will help you. https://www.mymowerparts.com/pdf/Te...-TROUBLESHOOTING-AND-IDENTIFICATION-GUIDE.pdf

Done a little more digging here. It seems to a series 6 4/2 cycle carburetor. Try looking at the 632466 which was replaced by the 632795A.

Star, I found that one also, but the OP has stated more than once he wants a fix-jet non adjustable carb.

StarTech said:

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OMG!!!!! You found it!!! Thank you so much! What program are you using? I find it weird that the parts breakdown shows an adjustable mainjet but when you click the part#, it's fixed. I have posted In so many small engine groups and no one was able to find it.

Rivets said:

Star, I found that one also, but the OP has stated more than once he wants a fix-jet non adjustable carb.

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he found the correct carb. 632466 is it.

Just an old fashion separator tube that I keep fairly well honed. The information is out there though sometimes you have to go on the dark web to find it. The above bowl nut jet may still may not be the exact same one, jet size wise. That is probably why the replacement is adjustable.

Just be careful as that is a right hand threaded items and if the carburetor was for only 2 cycles that part would be left hand threaded one that would be a lot harder to find.

To simplify your request why don’t you post the Model, Type, and Serial number of your Tecumseh engine and then look it up here on Tecumseh. For what it is worth I have serviced over 1000 Tecumseh Powered Snowblowers and none of them used a carb with a built in primer. They all have a primer remotely located on the flywheel housing attached to the carb by a hose. All carbs were the same except ones had a adjustable main needle valve on the bottom of the fuel bowl. All others are fixed jets.

Take a picture of your engine along with the Model, Type, and Serial number of your Tecumseh engine, text or email it to me, and I will look it up for you.

Robbie
AtRo Racing Products
203-641-8569
AtRoRacing@Gmail.com