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I need help identifying a B&S engine. I am looking for parts especially a carb but want other information as well. If I know the model number all this info would be just a google search away. Here is what I got.







Mostly I want to buy a replacement carb.

Use scotchbright pad etc. to remove rust, need: Model xxxxxx, type xxxx, trim xx, & code xxxxxxx numbers.
See pages 18-23 to determine your carburetor make Walbro or Nikki & rebuild kit or new carb.
Carburetors that are inexpensive are not OEM B&S Parts, easy to determine by manufacturer.
Example: OEM B&S Carburetor- Manufacturer B&S

I think I got it

Model 31C707
Type 54E1
Code 040320ZE

cant find it by searching online

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It is actually
Model 31C707
Type 0?54-E1
Code 040320ZE

made March 20 2004
So you are missing a digit

Go to Jacks Small Engines & click on the parts look up link on the right side
When the window redraws go down to engines and click on B & S
This brings up a numerical listing of the engines made for the USA market
So click on the one that has your engine series in it ( 200000 -> 399999 )
When the window redraws scroll down to see where 31c707 will be (31C700 to 31C799 )
Click on the + or right click to get another new window and scroll down slowly looking 31c707
Open that window and scroll down checking for every code that ends in your numbers ( 54 ) with the E1 on the end.
I found 1 of them .
But the aim of all this typing is to show you how it is done properly.

The other way is to do 10 google searches with the numbers 0->9 for the missing digit
Both ways work but the Jacks search works better

The missing digit is a "1" since we can see the model number.

31C707-0154-E1