[Bobcat]

Those are pretty easy and inexpensive to replace ... do you have a spare carb around you could rob ? Just for the heck of it , check to be sure the float doesn`t have a leak or is sticking . You also might have some trash in the float needle valve holding it open all the time . I`ve also seen the float level adjustment run so far in , it causes the float to hang open because the angle on the needle valve plunger is so bad it sticks open .

Bob