I have this Kawasaki 550 Jetski, It will not run more than one min, Before the Rpm Goes down.

I startet the ski this morning and sailed 50yards, it took Rpm and that was good but after that i could only hold the ski startet with Gas at MAX... and the ski whent on very low RPM.. and then it turned of:o(

Some People says it is the Carburator I need to fix?

Help Me.. What's Going on..

Nicolaj J R