Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 640Get this manual
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SERVICE MANUAL NUMBER 24
J2-21 J2-22 J2-24 J2-26 J2-27 J2-30 J2-32
916 451 906 417 432 472 439
Poor Performance And Acceleration, Incorrect Idle Poor Performance