Easy
15-30 minutes
This genuine replacement part is designed for use with Tecumseh engines that are commonly installed on Toro lawn and garden equipment. It is sourced from original equipment manufacturer and it is sold individually. The purpose of this part is to mix air and gas before the fuel mix goes to the engine. One durable metal carburetor assembly is included per order.
Carburetor Asm 640350
OEM part for: Tecumseh, Toro
Part Number: 640350
$97.16
In Stock
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Compatibility
This Carburetor Asm will fit the following 334 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 334 matching models.
334 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Tecumseh
- Toro
This item works with the following types of products:
- Lawn Mower
This part replaces obsolete part #: 640271, 640303
Customer Part Reviews ?
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Perfect Fit
The carburetor fit like a glove. These people know their stuff. My craftsman wheeled weed trimmer which is just about 20 years old works like new again. Nobody else even knew what I was talking about. This is the second time I have bought something for one of my pieces of lawn equipment, I will come again if I need something. Thank you
Guest -
July 28, 2020
Verified Purchase
Extremely Easy Repair
Replacing the parts ordered was extremely easy. It took no longer than a few minutes to replace the parts and my lawn mower was up and running. Thanks.
Guest -
May 14, 2020
Verified Purchase
Easy shopping on line and fast shipping
The carburetor was the correct one, fit perfectly and was received on time!
Guest -
June 3, 2019
Verified Purchase
Questions & Answers ?
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Spring on carburetor float was broken.
Michael - December 29, 2015
👍 13 of 14 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set
Parts Used
The internet suggested it would be prudent to replace the whole carburetor and not just the spring attached to the float within the carburetor. With a new lawn mower cost of $329 I thought $82 for the carburetor was a steal. It was incredibly easy to replace and the mower started immediately and has continued to work. All it took was to remove the top lawn mower cover, loosen the two carburetor bolts and replace it with the new one using the gasket supplied with the carburetor. A word of caution. Be sure you notice which hole on the old carburetor that the throttle cable was placed through so you can be sure to connect it to the same hole on the new part otherwise your mower may run either too low or too high rpm.
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Bad carburetor.
Allan - August 6, 2016
👍 5 of 5 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set
Parts Used
Replaced the new unit and serviced the old unit keeping it as a spare.
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Replace the Carburetor on my Toro Lawnmower
Carroll - May 7, 2016
👍 5 of 6 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Socket set, knife
Parts Used
Pretty easy to do. Took the old carburetor off and put the new one on and reattached the linkage. It was a perfect fit. I also cleaned out the gas tank, replaced the fuel line, and installed a fuel filter. Lawnmower started on first pull and stayed running. All I need to do now is adjust the idle a little bit.
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Lawnmower wouldn't start
Darren - May 6, 2024
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set
I removed the spark plug and keep it connected and pulled on the rope to see if I could see any spark. No spark and it was a new spark plug. Replaced magneto. Started on second pull. Took around 15 minutes to remove and replace all the screws.
Went ahead and replaced Carburetor and air filter.
Went ahead and replaced Carburetor and air filter.
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Would not start, needed a tune up.
Alex - April 6, 2023
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set
Replaced carburetor, air filter, and replaced string on pull cord. Changed oil also.
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Lawnmower would not continue running
Lisa - September 2, 2022
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Demo tool to remove flywheel
Parts Used
Replaced the Carburetor but it was probably not necessary. It didn't improve the performance of the mower so I suspected a problem with the gas tank or line. Removed the line but no gas spilled out, so I suspected the tank was clogged, turned the cap to open the tank and drain the gas and gas poured out the line, my problem was simply vapor lock (no ventilation opening in the cap). Mower is now running like an Indy car (after drilling a small hole in the cap).
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No start, leaking carburetor, very low spark
Paul - May 21, 2020
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Medium
Time
15-30 minutes
Tools Used
Pliers, Wrench Set, Nutdriver, None
Parts Used
Cleaned up motor and took a picture to assure proper set up of new parts. Removed rope start, removed bolts from muffler to make easy access, removed carburetor, swapped part, reassembled and started up with 3 pulls.
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Mower would not start. When I could get it running, it would run for awhile then stop.
Craig - May 31, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set, Adjustable Wrench
Parts Used
Removed old carburetor and replaced with new one. You can find instructions on YouTube. Not difficult.
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Carburetor broke.
Michael - December 11, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Wrench Set
Parts Used
Remove the old carburetor springs starter rope gas tank. Cleaned gas tank, fresh gas, three pumps on the carb, one pull and it fired up. Done deal. I've fixed a lot of things with Ereplacementparts. Thanks.
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Carburetor leakilng gas and mower barely starting then stopping.
John - June 25, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Socket set, Wrench Set
Parts Used
Removed cowling and disconnected gas line and spring from carburetor.
Removed 4 bolts holding carburetor in place then put new carburetor assembly in it's place.
Very easy even for a non-mechanic like me. Regular shop told me it was a 45 minute job but would take two weeks to get to it, I had the part shipped and in place within 4 days.
Removed 4 bolts holding carburetor in place then put new carburetor assembly in it's place.
Very easy even for a non-mechanic like me. Regular shop told me it was a 45 minute job but would take two weeks to get to it, I had the part shipped and in place within 4 days.
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
