Easy
15-30 minutes
This is a genuine OEM approved replacement part designed for use with Toro lawnmowers with Tecumseh engines. By pressing on the purge bulb, it will force fuel into the fuel line from the fuel tank into the carburetor. Once the carburetor is full of fuel, the excess fuel will be purged back into the tank in the fuel return line. At some time the primer will lose its elasticity or crack and need to be replaced. It is made out of rubber and it is sold individually.
Primer Bulb And Retainer Ring 640259
OEM part for: Tecumseh, Toro
Part Number: 640259
$7.67
In Stock
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Compatibility
This Primer Bulb And Retainer Ring will fit the following 98 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
This item works with the following types of products:
- Lawn Mower Parts
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Super easy to install!
It was super easy to install and my lawn mover is working great!
Guest -
June 28, 2022
Verified Purchase
Great resource
I was able to repair my 18 yr. old lawnmower with the correct replacement parts as well as the instructions to make the repair. Just great!
Guest -
June 2, 2020
Verified Purchase
Lawn mower parts for a Toro
The parts arrived as stated and were just what I ordered. Things went well.!
Guest -
May 12, 2021
Verified Purchase
tall grass
The parts were correct and worked fine just a little upset with delivery, paid extra to get it here in two days and didnt show up up for seven days. I get the covid thing, so just say no matter how much you spend it will not get here for 7 to 10 business days. Just saying!
Guest -
September 8, 2020
Verified Purchase
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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.
Hole in primer bulb
Rodney - April 7, 2016
👍 23 of 25 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, 19mm socket, small hammer
Parts Used
Pull out old primer bulb and pry out retainer ring with small screwdriver. Put new retainer ring over new primer bulb with ears facing out, put in place and place 19mm socket over bulb and drive retainer ring in place tapping on socket with hammer.
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Air getting into gas line. I could get it started after priming, but mower wouldn't stay running.
Toni - June 11, 2016
👍 3 of 3 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, One socket and Hammer
Parts Used
Repaired as instructed. Removed retainer ring with screwdriver and used socket and hammer to insert ring and primer bulb. As a 54 y.o. woman, I figured out the problem AND fixed it myself.
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Cracked plunger bulb
R - May 1, 2016
👍 2 of 2 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Pliers, Wooden tube
Parts Used
Remove the old primer by pulling on it. The remove the the retaining ring. Then press the new primer back in and use a socket the same size of the retaining ring and tap it in, with the tabs facing up.
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Lost power. Didn't run smoothly.
Steve - November 6, 2023
Tool Type
Lawn Mower
Difficulty
Easy
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver
Pulled the carburetor off and rebuilt it. The idle jet was completely clogged. You'll need a very small diameter wire to clean it. I used a strand of copper wire. Reassembled and runs like new. Check for videos on how to do it. Very simple if you have ever turned a wrench.
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Lawn mower rubber primer bulb replaced
joyce - September 18, 2021
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Socket set, Q-tip to clean out any dirt
Parts Used
Removed old cracked bulb w/screwdriver and pliers
Replaced with new bulb and retainer ring
Tapped into place with socket
Mower started and ran smooth on first try
Replaced with new bulb and retainer ring
Tapped into place with socket
Mower started and ran smooth on first try
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Primer bulb was torn, spark plug and air filter were overdue for a change
Randall - May 14, 2021
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers, Socket set, No others needed
Use socket to replace spark plug. Air filter does not require any tools. The primer bulb is held in place by a retainer ring so you need a sharp tool to get behind the ring and pry it out. Very simple to do.
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primer blub cracked
JOSE - April 23, 2021
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, 19mm socket
Parts Used
poped off retainer ring, pulled off primer blub...used 19mm socket placed over bulb and retainer ring tapped in with rubber mallet..slight pull on blub to insure proper install.
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primer bulb was bad..
FRANK - July 8, 2020
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, none
Parts Used
I pulled the old one out and put the new bulb in.
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It had dry-rotted allowing air leak
Joel - June 11, 2020
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers, 19 mm socket, small hammer
Parts Used
I ripped the old one out with pliers, pried out old retaining ring. Slipped the new ring over the new bulb and tapped it into place with hammer and 19 MM deep socket. That’s it. 😀
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Lawnmower primer bulb replace
James - May 22, 2020
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Pliers, Socket set, Nutdriver, Pliers screwdriver socket
Parts Used
Take the old primer bulb off put The new one on with a socket Hooked up the hoses but gas in it done.
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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.
