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Jd 300 Carburetor Float Valve Removal

float valve carburetor

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#1 purdum OFFLINE  

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Posted April 13, 2013 - 02:51 PM

I need to replace the float valve assembly in a JD 300 carburetor.  The float valve is easily removed but I can't figure out how to get the valve seat out (brass part, center of photo). It's a 3/8" threaded fitting but there's no room to even get a thin-wall socket around it.  I've tried putting a drill bit inside and backing it out, no dice.  Is there a special tool need to get the valve seat out?  My alternative seems to be to file down a bit of the carb body which forms the support for the float hinge pin just enough to get the thin-wall socket in.  Other ideas? 

 

John Deere 300

16 hp Kohler K-341AQS engine, spec 71169A

Carburetor JD # AM35801 (Kohler # 4505308, pre-55000)

 

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#2 olcowhand ONLINE  

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Posted April 13, 2013 - 02:55 PM

I use a craftsman 1/4" drive 12 point socket....fits fine for me.  I would not remove any material from the carb body.  Maybe if you have one, take a cheap socket & grind the wall thinner.



#3 chris m ONLINE  

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Posted April 13, 2013 - 03:15 PM

I use the same socket Daniel (olcowhand) mentioned.



#4 John@Reliable OFFLINE  

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Posted April 13, 2013 - 03:25 PM

I use a craftsman 1/4" drive 12 point socket....fits fine for me.  I would not remove any material from the carb body.  Maybe if you have one, take a cheap socket & grind the wall thinner.

 

 

I use the same socket Daniel (olcowhand) mentioned.

Same here, many of the cheaper sockets are to thick to work, I have many cheap tools that have been customized like Daniel said. :smilewink:



#5 purdum OFFLINE  

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Posted April 13, 2013 - 03:38 PM

I use a craftsman 1/4" drive 12 point socket....fits fine for me.  I would not remove any material from the carb body.  Maybe if you have one, take a cheap socket & grind the wall thinner.

 

 

I use the same socket Daniel (olcowhand) mentioned.

 

 

Same here, many of the cheaper sockets are to thick to work, I have many cheap tools that have been customized like Daniel said. :smilewink:

 

Thanks.  I thought about this but the option didn't seem practical because I don't have any grinding machinery.  Maybe put the socket in a vise and attack it with a file....it's worth a try with a cheap socket.

 

I just wonder how the folks at the John Deere shop get these seats out.



#6 chris m ONLINE  

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Posted April 13, 2013 - 03:45 PM

Thanks.  I thought about this but the option didn't seem practical because I don't have any grinding machinery.  Maybe put the socket in a vise and attack it with a file....it's worth a try with a cheap socket.

 

I just wonder how the folks at the John Deere shop get these seats out.

They just use a thin wall socket. This is another reason I have so many of the same size sockets and wrenches. Even though they are the same size, they are all different in some way.



#7 purdum OFFLINE  

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Posted April 13, 2013 - 04:05 PM

They just use a thin wall socket. This is another reason I have so many of the same size sockets and wrenches. Even though they are the same size, they are all different in some way.

 

I took the carburetor into an auto parts store and we tried a 3/8" thin-wall socket, but it didn't go down far enough to engage the hexagonal side of the valve seat.  There's only 1/16" clearance between the carb body and the edge of the seat.



#8 LTD OFFLINE  

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Posted April 13, 2013 - 07:48 PM

If I don't have a socket, I can usually get them out with a wrench or a pair of large pliers. They aren't usually to tight. You probably don't want to use a file....unless you have plenty of spare time :rolling:



#9 LTD OFFLINE  

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Posted April 13, 2013 - 07:51 PM

Oh and BTW :welcometogttalk:   Glad you joined the site. Thanks for the detailed description on the carb. That helps us out a lot. :thumbs:


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#10 Ryan313 OFFLINE  

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Posted April 13, 2013 - 08:06 PM

Welcome to the site!

I use a 1/4 drive deep socket like the others to get mine out.

#11 purdum OFFLINE  

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Posted April 17, 2013 - 07:49 PM

Thanks to everyone.  I found a 3/8" thin-wall socket that was able to engage the sides of the valve seat and remove it.  Back in business.


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