1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 436Get this manual
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CYLINDER HEADtf80" and n90" REMOVAL
Figur 3 Cyl inder Lin er Retaining Bol ts INSTALLAT ION
Place cyli nder head in posi ion, , iLh loca in" Loo ;)Ttall linder ad sc re ws an