This model is relatively popular, the repair kit configuration is relatively complete, has the greater convenience to the maintenance. This carburetor service kit is suitable for the KPS Zephyr 400 Keihin carburetor. It is equipped with vacuum diaphragm and float for easy maintenance. It is recommended to purchase 4 sets of complete replacement, when adjusting the mixing ratio, it will be easier. The following pictures are taken in kind. Some detailed sizes have been marked in the following pictures. Buyers can compare the sizes.