Carter YH Single Barrel: Overhaul: Reassembly
If throttle shaft assembly was removed, slide shaft into throttle body and position throttle plate on flat of shaft with numbered side to shaft, then install screws loosely. Center throttle plate on shaft and in throttle bore, then tighten screws and peen securely. If choke shaft was removed, install a new "O" ring seal and position choke housing on air horn. Tighten attaching screws just snug. Slide choke shaft into air horn part way, then install piston to shaft and position shaft by rotating while installing piston into cylinder bore. Tighten choke housing screws securely. Position choke plate on flat of shaft so identification numbers are on air cleaner side, then complete installation in same manner as for throttle plate. Install throttle body on main body and tighten attaching screws securely (use a new gasket). Install diaphragm assembly in diaphragm housing, then install lower spring and retainer. Install metering jet (no gasket), then install diaphragm housing screws and thread them in two or three turns to hold diaphragm in alignment and install diaphragm assembly in carburetor bowl. Tighten attaching screws securely. Install splash shield between metering rod jet and pump housing, then install metering rod onto rod arm, hook spring, and install clip. Place pump lifter link in guide opening and insert throttle lever connector link onto pump lifter link (connector must be installed before lifter link assembly is completely in position) then place lifter arm down over pump rod. Place metering rod in jet with arm over pump rod and lifter arm, then place upper springs over pump rod. Compress springs with a screwdriver and install retainer. Install throttle shaft pump lever over throttle shaft and pump link, then tighten retaining screw. Adjust metering rod (see above). Install float needle seat, needle valve, and float assembly in bowl cover (float hinge pin shoulder to outboard side of bowl), and adjust float level and drop. Install pump discharge needle, then install bowl cover (and a new gasket) and tighten cover screws. Install fast idle link into choke housing and hook unloader projection over tang on fast idle cam assembly. Install choke link connector link to throttle lever keyed hole, then to choke link with a clip. Adjust fast idle (see above), then adjust unloader. Install choke baffle plate, gasket, choke coil housing, retainer clips and screws. Adjust automatic choke (see above).