Medium
15-30 minutes
Diaphragm Assy. 630978
OEM part for: Tecumseh, Toro
Part Number: 630978
$5.49
In Stock
Ships within 1 business day 
Compatibility
This Diaphragm Assy. will fit the following 1787 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 1787 matching models.
1787 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Craftsman
- Tecumseh
- Toro
This item works with the following types of products:
- Lawn Mower
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Finally found it!
Company that made carb. Couldn't find part for it. Just wished parts could have been mailed.
Guest -
January 28, 2022
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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.
Carburetor flooding
Larry - March 5, 2021
Tool Type
Engine
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Torx head screws
Parts Used
1. Remove four screws holding the carburetor diaphragm plate
2. Remove the two fuel mixture adjustment screws
3. Scrap with a single edge razor blade the old gasket from the carburetor and diaphragm plate.
4. Blow out the fuel mixture ports with gum out and clean the carburetor fuel bowl with the same.
5. Assemble the new diaphragm, gasket and plate installing the four screws.
6. Install the metering needle screws with an initial 1 turn out for each
7. Start engine and adjust the metering screws.
2. Remove the two fuel mixture adjustment screws
3. Scrap with a single edge razor blade the old gasket from the carburetor and diaphragm plate.
4. Blow out the fuel mixture ports with gum out and clean the carburetor fuel bowl with the same.
5. Assemble the new diaphragm, gasket and plate installing the four screws.
6. Install the metering needle screws with an initial 1 turn out for each
7. Start engine and adjust the metering screws.
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Engine had sat for several years would not start
Earl - May 10, 2020
Tool Type
Lawn Mower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver, Adjustable Wrench
Parts Used
1. Removed and disassembled carburetor
2. Cleaned spray carb cleaner
3. Used small wire to clear tiny holes
4. Removed and cleaned needle valves
5. Installed new diaphragm and reassembled
6. Installed new spark plug
2. Cleaned spray carb cleaner
3. Used small wire to clear tiny holes
4. Removed and cleaned needle valves
5. Installed new diaphragm and reassembled
6. Installed new spark plug
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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.
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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.
