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Briggs 23fb Carb Specs And Parts


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#1 Ryan313 OFFLINE  

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Posted May 14, 2012 - 07:09 PM

Does anybody know what the carb specs are for a Briggs 23FB? I mostly need to know what the internal part numbers are supposed to be. Any info is appreciated!

#2 caseguy OFFLINE  

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Posted May 14, 2012 - 07:49 PM

I posted this in the other thread as well, but is that the number on the engine, or the number on the carb. I did a quick search and couldn't find any info for 23FB under Briggs & Stratton.
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#3 chris m OFFLINE  

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Posted May 14, 2012 - 07:50 PM

Ryan do you have a picture of the carb? I'm thinking this is just a 2 piece Large Flo-Jet carb.
If no picture does the top of the carb come off? if so, is there 3 screws or 4?
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#4 chris m OFFLINE  

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Posted May 14, 2012 - 07:53 PM

I posted this in the other thread as well, but is that the number on the engine, or the number on the carb. I did a quick search and couldn't find any info for 23FB under Briggs & Stratton.

It is the engine model.
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#5 Ryan313 OFFLINE  

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Posted May 14, 2012 - 08:19 PM

On the tag it says 23 under model but I thought there was an engine called the 23fb? I figured the fb was the series and not on the tag.

The carb comes into two pieces, it has 3 screws on the top.

#6 chris m OFFLINE  

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Posted May 14, 2012 - 08:29 PM

Ok so it is just a standard Large Flo-jet cab then. Ryan did you guys take the 2 halves apart?

Those are the ones you need to take out the high speed needle assembly to get to the metering tube. that tube has to be taken out before you can split the carb. or you'll bend it. they can be fun removing if the carb has sat awhile.
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#7 chris m OFFLINE  

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Posted May 14, 2012 - 08:30 PM

On the tag it says 23 under model but I thought there was an engine called the 23fb? I figured the fb was the series and not on the tag.

The carb comes into two pieces, it has 3 screws on the top.

yes there is a 23FB also
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#8 chris m OFFLINE  

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Posted May 14, 2012 - 08:34 PM

http://www.ebay.com/...=item20c4eaead7 Here is a cheap rebuild kit
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#9 chris m OFFLINE  

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Posted May 14, 2012 - 08:39 PM

http://gardentractor...rb-adjustments/ Download this and look at the 2 carbs one is the Medium Flo-Jet, The other is the Large. Let me know what one you have.
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#10 Ryan313 OFFLINE  

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Posted May 14, 2012 - 08:39 PM

Oh yea! He bent the needle! I was putting the flywheel and covers back on as he took the carb apart. He took the two halves apart and the when we went to put it back together he said that he was having trouble getting it apart because of the stupid little needle sticking up. I told him to remove it so it would go back together easier and as he took it out it wobbled a little. I had another one, but the one that got bent had a G on it, the extra one has a E on it. They have slightly different hole placement so we put the bent one back in, not sure if we should have. What is the difference between the two metering tubes? If any?

#11 caseguy OFFLINE  

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Posted May 14, 2012 - 08:42 PM

Wow Chris! I toddled off to look at a few more posts and you're all over this! I'm not exactly a carb expert, though I've been through a few. It sounds like you've got the experience with this one! Hope you two figure it out!
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#12 chris m OFFLINE  

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Posted May 14, 2012 - 08:45 PM

The G is the one I have in all my carbs. Not sure of the difference, more than likely more or less holes. Those carbs can be a pain if you never worked on one. one big problem is that tube will not seat properly when you put it in. It will cause gas to leak out the over flow hole on the bottom of the carb. it makes it seem as if the float is sticking, but it is not. it's this tube.also the top likes to warp when you take them apart.
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#13 chris m OFFLINE  

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Posted May 14, 2012 - 08:47 PM

Wow Chris! I toddled off to look at a few more posts and you're all over this! I'm not exactly a carb expert, though I've been through a few. It sounds like you've got the experience with this one! Hope you two figure it out!

LOL. This was the first type of carb that I mastered. I know a lot of people that hate them because of all the issues they can have.
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#14 Ryan313 OFFLINE  

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Posted May 14, 2012 - 08:50 PM

How much do you think it matters that it now has a little bent in it? Should I put the E into it? I think it had the same number of holes, but they were farther up or down the tube.

#15 Ryan313 OFFLINE  

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Posted May 14, 2012 - 09:10 PM

I downloaded the manual you posted the link for, it is a medium flo-jet.




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