Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 243Get this manual

Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 243

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NOTE: BE SURE that water in thermostat tester is allowed to cool sufficiently [below 110 (43 C)] before testing the other thermostat A torque wrench is essential for correct reassembly of powerheadDO