Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 41Get this manual
9Secu re fuel pump components to carburetor flangeusing screws (a)T ighten screws even ly and securely 11.Secure mixing chamber cover (a) in placeusing screws (b)
12lnslalllow speed mixture screw (a) and spring (b) 13.Adjust low speed mixture sc rew as utlin ed in "Carburetor Adjustments" preceding