slow speed

First several rides of the year, no issues, ran great. Last week it didn't want to accelerate past 37mph for a few minutes, but then it recovered and ran great at 49/50 mph, so I brushed it off. I was hoping it was stale fuel, so I ran it down some and filled with fresh fuel. Today it would not...

I have a 13 year old granddaughter that I would like to buy a used 2 cycle Seadoo for. The 2 cycle for the reduced price. I would like to know if she operates it at only medium throttle will it hurt the unit. I do not want her operating it at full throttle for a while until I feel that she is...