1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 340Get this manual
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othe isassembly of throttl body ded ever rem ove th ro tl va ves, id le nd jJark oles are dr lled in irect relati on to loc ation of thro ttie ' es Remoal of throttle "alves will ups th locationT hrot