Hi guys...I could use a little help. I'm new to the jetski arena, and I picked up a '93 X2 where the guy swore it ran. When I try to start it, you hear the loud thump of the starter engaging, but the engine doesn't turn over. I jumpered my car battery to it and the same. Is there a way to manually rotate the shaft to see if the engine froze... or is there a step I'm missing?