582 YEAR OF MANUFACTURE

HI ALL.

I BOUGTH A USED ROTAX ENGINE, BLUE TOP WITH 2 CARBURATORS, AND I'D LIKE TO KNOW THE YEAR IT WAS MANUFACTURED. I HAVE THESE NUMBERS:

1) ON THE LABEL: 5307427 AND JUST ABOVE THIS PLATE IN THE ENGINE THIS Nr: 6811410. ALSO I HAVE AN OTHER Nr AT THE END OF THE OTHERE SIDE OF THE ENGINE TO THE PROP: 6913440

IS IT POSSIBLE TO FIND THE YEAR OF THIS ENGINE?

THANK YOU IN ADVANCE.

LAAS

PS. ATTACHED PHOTOS