PURPOSE: To enable confirmation of starting oil storage condition from the outside by providing a display which will become transparent upon storage of fuel at the auxiliary starting fuel storage section of carburetor.

CONSTITUTION: Fuel is fed by means of priming through a hole 88 into the valve body of a floatless carburetor 10 and stored at the fuel storage section 70. The side wall 90 of the storge section is made of transparent member having diffused reflecting section 104 on the inner face while a fuel guide member 92 is provided through a gap. Since said fuel will make the diffused reflecting section transparent when passing through the diffused reflecting section on the inner face of the side wall 90, the storage condition of fuel can be confirmed easily from the outside.