Update!! Dealer along with Mercury field service technician found that the grommet/gasket for the thermostat was gone! May have disintegrated over time. Also removed the line to the water pressure gauge (it is unnecessary on a 60). They also found the fuel filter on the port side of the engine...
The 2006's were a joint effort between Mercury and Tohatsu. Mine ran fine for 17 years. Now it starts and idles fine. It will not run between 1000 and 2400 rpm. Read many threads of others with similar issue. They replaced all of the parts listed above with no changes. All mechanical and...