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					Originally Posted by  bradford
					 
				 
				I had an old Kawasaki jet ski that would do that when being flushed on the trailer with no load. I had to cut the fuel to get the dang thing to quit. It would idle up pretty high and pretty much scare the crap out of anyone nearby. 
			
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i had a Kaw 550 Standup that did that right often when the timing was off, i aways killed it but covering the carb so it got no air, it turned out the timing was off by 4* doesn't sound like much but it fixed it once timing was set.