Late Carburetor Kit

According to the parts manuals, variants of the "late" carb were in installed N600's with chassis #1500000 and up, and all Z600's, but they are interchangable so your Honda may have had a different one installed at some point.  The early float bowl is 5-sided and "squarish" in overall dimensions.  The "late" carb has a more rectangular float bowl.   Compare your carb to the exploded view to determine if it is correct.  We also carry the early kit. According to the parts manual, N600 chassis #1500001 and higher, and all Z600's have the late carb.