You need to get the model number of your tractor (under the seat, under the hood possibly) What engine does it have? You will need the number off the engine too, then you should be able to find an online manual for both or post your request here.

Please do not start new posts for the same question as answers will end up sprinkled around in several places and duplicated.

So find the model number of the tractor, brand of engine and its model number and someone may be able to answer the question. Kind of impossible with the information given so far, kind of like asking 'which carb fits my chevy', and not saying the year, model or engine.

If no model number, a good description. Engine size, pusher, tractor, etc.

Ebay has a load of parts.

ok murray tractor 40702x92f/ briggs&stratton engine 289707-0121 need manual and just let u know i tried to get the carabator for this tractor but found out there are quite a few for this one that is why i need the manual.

Even after you "get the manual", you will still have a few choices to make. Click the link below to view the Briggs IPL for your engine.
You can e-mail me if you want the other manual.
You don't mention why you want (or need) to replace the carburetor instead of cleaning and rebuilding the one you have (unless your engine is "minus the carb").

Here is a link that might be useful: 289707 IPL