For HS4 single carbs this is the very least of the parts required for an overhaul kit-if you require the spindle and disc and bushes see CRK121.pre waxstat with the red jet is CRK227
Carb repair kit less spindle and butterfly for single HS4 carbs-includes float needle valve and jet. Full repair kit with spindle etc is CRK227-----for waxstat type see CRK121, This kit is suitable for pre Waxstat (pre 74) Minis only
Service kit for the following carbs: FZX1306, FZX1307, FZX1280, FZX1281, FZX1409, FZX1412, FZX1429, FZX1433, FZX1462, FZX1524, FZX1526, FZX1525, FZX1531, FZX1469, FZX1312, FZX1366, FZX1422, FZX1428, FZX1443, FZX1468, FZX1529, FZX1419.
Kit entretien carburateurs SU double HS2/4