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Need help finding out the year of a mercury outboard

Adam S

New member
Hi. I just bought a boat with a 40hp mercury outboard serial#6362661 and wanted to know the correct year of the motor as well as the proper fuel/oil ratio for it. Thanks for your time
 
Should be a 1983 model year. fuel/oil ratio is 50:1, 1 pint(US) TC-W3 rated oil to 6 gals(US) 87-89 octane gasoline. Avoid ethanol enhanced fuel if you can.
 
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