Well, something is amiss. The last two numbers should be the year of manufacture! I'm not sure seadoo had a 1949 model. The HIN has 12 characters like yours. It doesn't look like a 94 either. Do you know if it is original engine, they have a HIN on them, its on the back , I think right side, on PTO.
Show us a pic of the dash and engine. that could help ID it.