Originally Posted by elsalvadorklr
thought stock was 39 but anyways...
I have mine but im en el salvador...shipping might not be worth it, however mine has been rebuilt, has a custom choke flap, new float valve and needle, new splash guard, new gaskets, new acv valve and new fuel screw...so its a great runner...
pleanty of jets too..
Could be 39, I just assumed as many 600-650s seem to use 40mm. Yours sounds like great, but probably to expensive to ship. Ill keep it in mind incase I dont find one closer.