A production running change in fast idle cams on model E4ME carburetor, P/N 17085203, has made necessary a change in the specification for the choke rod-fast idle cam adjustment. Some early production 1985 model carburetors were produced with a three (3) step fast idle cam identified with the letter 'E' (See Illustration). Later carburetors are built with a two (2) step fast idle cam identified with the letters 'AD' (See Illustration) the proper choke rod-fast idle cam adjustment specifications appear with each cam illustration.
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