Carburetor Rebuild Overhaul Kit For Zama RB-17. Complete Kit. OK to Use With Up to 25% Ethanol In Fuel Quality Aftermarket Carburetor Rebuild Kit Made to meet or exceed OEM specifications. Rebuild kit for Zama part number RB-17 Complete kit, includes welch plug, screen, needle & inlet lever. OK for use with fuel containing up to 25% Ethanol