1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 123Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 123

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377 CID6.2L ENGINES
Valves that are pitted must be refaced to the proper angleValve stems that show excessive warp or wear, must be replacedWhen warped valve head is refaced, knife edge will be

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