Just bought my first jetski. It's a 1997 Seadoo GSI with the 717 engine and the single carb. I'm pretty mechanically inclined but this is my first jetski and I've never worked on them. It starts and runs just fine but doesn't seem to rev up right. When I put it on the water, it won't go over 10 mph and the tach only reads around 2000 rpm but I don't know if this works quite right. Engine compartment was just flooded but I replaced battery and spark plugs and it runs just fine now, don't know if that makes a difference. I was thinking maybe it was a carb issue but I don't know how to tune these or anything. Any help is appreciated.