Evinrude 9.5 Sport Twin Model 9722M /Serial # E10714

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Posted by Greg Hilker ( on August 29, 2005 at 21:41:37:

Can anyone tell me why I am experiencing an overheating problem at full throttle. It will idle all day without an issue, but full throttle will cause the engine to want to overheat and sieze. After cooling down it will run fine again. Is it a thermostate problem, and if so is there a quick test for this. Or is it a water pump issue. Water is spraying from the rubber exhaust tube. It has truely got me stumped.

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