Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 63Get this manual

Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 63

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Cylinder Head , Inspect cylinder head for cracks, carbon build up or other damage2 Use surface plate and feeler gauge to measure cylinder head wa rpageCheck al several poi nts around diameter of head3