Looking for help figuring out what year my Ski Doo Bombardier Rotax 583 motor is... The motor number is m4986023.    bore: 2 X 76mm   Stroke 64mm    capac: 580.7 cc    made in Austria.  I am trying to figure out the year of my 583 so I know the proper jetting for sea level... If anyone knows what size main jets this specific motor would take for sea level and or what year this motor is that would be very helpful! 

10274_1_motor number.png (You do not have access to download this file.)
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