Service Bulletin 2011-03 is what is being talked about. A rather lengthy bulletin for new 8.2L cat equipped engines. there is a 30 page service bulletin on the 8.2 for hydro locking issues. Boat purchased 6/08/11, service bulletin issued 6/10/11 Here's the gist of it.

Situation

Mercury Marine has determined that some 8.2 Sterndrive Emission Control engine models within the Models Affected serial number range may experience a hydraulic lock after hard running conditions and keying off. This situation may prevent the engine from restarting and could damage internal engine components.

In addition, Mercury Marine is taking this opportunity to address potential fault codes set due to corrosion in the oxygen sensor connection, misfire codes due to spark plug wire damage, and a propulsion control module (PCM) replacement to address injector driver issues that may cause the injector to stick open or closed.

Also, Mercury Marine determined that the position of the clamp on the flame arrestor may have resulted in differences in the amount of torque applied to the clamp at the factory.

Owner Notificaton

A letter will be sent to every registered owner of an affected 8.2 Sterndrive Emission Control–powered boat. The letter will advise the owner to take the boat to any Mercury MerCruiser authorized dealer for certain upgrades to the engine. Some affected power packages will have been updated before shipment. Visit MercNET or contact MerCruiser Customer Service or your regional service center to determine whether repairs have already been completed on a given package.

As a Mercury MerCruiser dealer, you should also contact affected customers to make them aware of this recall and to schedule an appointment for the repair. A copy of the customer letter is attached.

Correction

An exhaust elbow inspection, and replacement when required, coupled with the installation of the vent valve assembly are corrections intended to prevent the hydraulic lock situation.

Inspection of the oxygen sensor, oxygen sensor connections, and spark plug wires, including replacement of these components when required, is necessary to correct the potential fault code issues.

Replace the PCM when indicated. Engines without PCM replacement are required to receive a PCM reflash using the CDS G3 tool to update the calibrations and software to the latest version.

Inspecting, repositioning, and tightening the flame arrestor’s clamp to specification eliminates possible differences in the torque value applied to the clamp. Follow the procedures in this bulletin and complete each action for an affected engine.

Sterndrive Models:

8.2 MAG ECT

8.2 MAG H.O. ECT

SeaCore 8.2 MAG ECT

SeaCore 8.2 MAG H.O. ECT

Engine Serial Number Range 1A350340 – 1A352732

In short, if a customer has purchased a boat with a MerCruiser 8.2L ECT, and it's affected by this bulletin, one would receive a letter. Unless perhaps in Canada, with the postal strike going on...