Re: Mercury 4 HP Serial No. Location

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August 9, 2015 at 7:08 pm #21766
billw
Participant

    US Member

    It should be right on the swivel bracket, facing towards the rear of the motor. Prior to around 1986ish, they had a seven digit serial number. Then around that time period, they switched to an eight-place number that went: digit, letter, then 6 more digits.

    Long live American manufacturing!