mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

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Heated Oxygen Sensor: Service and Repair
Heated Oxygen/Catalyst Monitor Sensors

Front Bank

EGO Sensor Wrench

SPECIAL SERVICE TOOLS

REMOVAL

1. Remove the engine splash shield.

2. Disconnect the Catalyst Monitor Sensor (CMS) electrical connector.

3. Remove the cable tie which retains the CMS wiring harness to the engine block.

4. Remove the CMS.

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