Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 596Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 596

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SUPPLEMENT TO SERVICE MANUAL NUMBER 24
CLEANING AND INSPECTION
1 Clean knock sensor with dry cloth, paying special attention to threads on base2 Inspect surfaces of knock sensor for signs