The "J" prefix on this serial number would indicate a Johnson, however, Johnson / Evinrude uses the model number to designate the year model of the engine. What make is the engine?MURCURY
my serial # is 81885 on a Silverline boat.
1986
1988
its a 1956
2k210405
The year model for a Johnson outboard is determined from the engine model number, rather than the serial number.
Mercury 3.9 HP. Single Serial Number 1657514
The engine model number, rather than the serial number, is required to determine the year model of a Johnson, or Evinrude outboard.
An Evinrude model E4RDHSR would be a 2004, 4 hp.
Two items are required to determine the year model of a Mercury outboard, the serial number and the horsepower rating.
More information is needed to answer this question. For most outboards, the brand, model number, and serial number is needed.
Johnson outboards uses the engine model number to determine the year model of the engine.