Carburetor Rebuild Kit for ZAMA RB-23 Aftermarket Carburetor Rebuild Kit for ZAMA Replace ZAMA RB-23 Use GND-12 if you need a Gasket & Diaphragm kit For Echo HC-1500 hedge trimmers and Echo and Mantis cultivators. Order by 5.00 PM, ship at next day with USPS first class mail.