Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 349Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 349

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INSTRUMENTATION
Oil, Fuel and Temperature
IMPORTANT: If testing proves gauge to be defective, it must be replaced as there is no repair available
TESTING
1 Turn ignition switch