1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 401Get this manual
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cB out nul unli lash is felt at push rodt hen tllrn in adj usting nut until all lash is remov dThi can be determined by checking push rodide pia' while turn ing adjusting nut(F'i!rure II Wh en is remo