Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 512Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 512

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SERVICE MANUAL NUMBER 24
aEngine Coolant Temperature (ECT) Sensor 2 Remove ECT sensor from thermostat housing
CLEANING AND INSPECTION
1 Clean with dry cloth, removing any excess seal