Savior Carburetor Carb Rebuild Kit Gasket for ZAMA RB-20 Homelite String Trimmer ST155 ST175 ST285 ST385 HB180 BP250 A03979 Blower Carburetor High quality carb rebuild kit Refer to Zama RB-20 Fits: C1U-DM4 A-C, C1U-H10 A-F, C1U-H11 A-K, C1U-H12 A-B, C1U-H13 A-E, C1U-H36, C1U-H37, C1U-H61A, C1U-M21 A-C Fits: ST155, ST175, ST285, ST385, HB-180 & BP250