AISEN Carburetor with Primer Bulb Diaphragm Gasket Repair Kit for Echo Mantis 2 Cycle Tillers SV-4B SV-4/B SV4B Zama C1U-K54A Fit Echo & Mantis 2 Cycle Tillers Replace Zama Part Number: C1U-K54A Fits Echo Engine Models: SV-4B SV-4/B SV4B Mantis Tillers Rebuild kit replace ZAMA RB-71 Package includes 1 carburetor + 2pcs gaskets + 2pcs primer bulbs + 1pc rebuild kit