1978 Evinrude Outboards 9.9/15HP Service Manual, Page 26Get this manual
cCheck leaf plate for distortion or weardAttach the two leaf valves and stops to the leaf plate baseCenter leaf valves over recesses in plate See Figure 3-2Tighten screws to torque specified in Section to avoid distortion of the leaves or leaf platesCHOKE aCheck the choke for free operationChoke valve must move freely, without binding economySometimes though, it is difficult to tell when the carburetor's throttle shaft first begins to moveYou can make simple tool to exaggerate this movement from an alligator clip and piece of stiff wireSee Figure 3-23AbAttach clip to end of throttle shaft opposite the cam follower linkageSee Figure 3-23cAdvance throttle grip until center of cam follower roller is within the raised marked area on the throttle camSee Figure 3-23At this point throttle shaft should just begin to rotateIf not, adjust as follows: Loosen two cam screws (see Figure 3-23) and adjust cam in or out as necessaryTighten screws and check operationThrottle shaft should start to rotate as center of roller aligns within the wide mark on the throttle camdInstall air silencer base and cover with washers and screwsSee Figures 3-5 and 3-6GRIND ONE JAW HERE