1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 121Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 121

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377 CID6.2L ENGINES
Valve SpringsChecking Tension
Use valve spring tester to check valve spring tension with dampers removedRefer to "Specifications IMPORTANT: Replace the spring if the sp

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