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70 HP Yamaha running rough

T

Texasredfish

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"I have a 2006 70HP Yamaha. A

"I have a 2006 70HP Yamaha. At about 1500 RPM, th engine runs very rough. Does not seem to be missing. I tried hooking up the flush attachment with water hose. It runs fine at 1000 to 2000 RPM. But when I run in the water it runs rough between 1200 to 1800 RPM. Any ideas about what is causing this problem?"
 
DO NOT RUN WITH THE FLUSHING A

DO NOT RUN WITH THE FLUSHING ATTATCHED
read ur manual
sounds like bad gas or plugs
 
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