1977 cj5 carb idle adjustment questions

[sibeta]

Can someone tell me where the idle adjustment screws are on my mastercraft carb? It is on my 77CJ5 with a 304. I believe it is the stock carb for this year. I cannot find them to adjust the idle for the life of me. Thanks.

 

[Cherokeester]

Do you mean Motorcraft carb?

 

[Cherokeester]

These pics should do the job, 2 mixture screws and one curb idle screw which opens the butterfly. Start the mixture all the way in and the engine running or barely running then turn them out 1/4 turn at a time with a vacuum gauge on the manifold vacuum port and adjust for best vacuum setting then set your curb idle speed after that.