How do i adjust carburator - 2001 Yamaha V Star Classic

Should be two holes on the side of the case towards the back. One is for high adjustment and the other for low adjustment. Hope this helps.

Believe it or not you just said the solution to your own problem manufacturers specs requires for any adjustments to engine idle or other carburator adjustments to be preformed while the engine is idling and at normal operating temp in plain english let the car warm up then make your idle and mixture adjustments if this doesnt solve it i would check the auto choke and make sure it is opening at normal operating temp hope this helps good luck

With one screw you can adjust the idle speed, and with the second, located under the carburetor you can adjust the running or load speed.

H is the high speed adjustment ( screw in to lean the mixture and increase the revs, screw out to richen and decrease revs ) I is the idle screw, this will adjust the tick over speed of the engine, you can also have a srew marked L this is to adjust the low speed running by leaning or richening the fuel mixture

This is a very hard carburator to adjust best to take it to a carburator shop and let them deal with it.

If the carburator has never been rebuilt, or the plugs that were installed at the factory have never been removed, you need to remove those plugs, there is one for each idle mixture screw, at the front of the base plate on the bottom of the carburator, 1 for the TPS adjustment on the driver side front of the carburator, and one for the mixture control solenoid on top of the carburator, in the middle, towards the front.

Replace all of the lines before any adjustments, too small to see air leaks are a common cause the issue you have.

Carburated engines of that year may have an idle screw adjuster. You can see the screw from the outside of the carb. If so, try adjusting the carburator with a screwdriver. Unlike fuel injected Engines they can be manually adjusted.

Are you sure that that the replacement is the correct one. Also, why did you have to replace the carburetor . Did you verify that the carburetor was the problem? Did the weedeater run by priming? Did you check the pump and lines? If these methods were tried and did not reveal the problem, then I suggest that you get professional help.