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A 65 hp Mercury outboard, serial number 4574019, is a 1976 year model.
50:1
An 65 hp Mercury outboard, serial number 4266564 is a 1975 year model.
A Mercury 65 hp outboard, serial number 7039331 would be a 1974 year model.
A 65 hp Mercury outboard, SN 6315551 would be a 1976 year model.
The 75 hp Mercury outboard will need a starting battery in the 650 CCA range, although, up to 1000 CCA would work just fine.
600-650 lbs fully dressed.
The mercury switch installed on your engine is designed to short out the ignition to ground when the engine is tilted out of the water. The intended purpose is as a safety feature in the event of striking an under water obstruction during operation.
For a 2 stroke model, a 500 to 650 cca, 12 volt starting battery will be sufficient. The recommended battery for a four stroke model is 1000 cca,
Freightliner never made a model called the 650.
650-700lbs
BCI group 65 ( such as Motorcraft BXT-65-650 ) 650 cold cranking amp (CCA)