Guaranteed Carburetors makes it FREE and EASY to return your carburetor core anywhere in the continental U.S. The remanufactured carburetor we ship you comes with a FREE UPS return shipping label. Simply place your old core in the box, adhere the shipping label, and give it to any UPS driver or place in UPS drop box. No long lines or paper work and it's FREE! The core you return needs to be assembled, rebuild-able and the same model as the one we sent you. If the core you send is disassembled, different, has parts missing or damaged, you will be assessed a partial core charge. If you indicate that you will not return the core, you will be charged a core charge at time of order. If you indicate that you will return the core and Guaranteed Carburetors does not receive the core after fourteen days from delivery, you will be notified via phone or email before the core charge is billed to your credit card. Remanufactured carburetors are tested to O.E.M. specifications the day of delivery to ensure little or no adjustments upon installation. Please allow one to three business days for processing your order and calibrating your carburetor.