1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 41Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 41

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MAINTENANCE
Avoid gasoline fire or explosionGasoline is extremely flammable and highly explosive under certain conditionsNEVER use gasoline as cleaning solvent1 Remove crankcase ventilation hose