Yamaha 90hp Overheating

by Stoney Turner
(Hickory NC USA)

90 hp yamaha 2 stroke overheating when gear engaged. Boat is out of water with ear muffs.Strong stream coming from pee hole and watream is not hot. Tone does not sound when at idle or when running at higher rpm when gear not engaged, Only when I engage the gear does tone sound. Any ideas?

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Jul 05, 2020
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starstarstarstarstar 		2002 Yamaha 225 HP OX66
by: Tommy

My 225 Yamaha is now over heating while idling around scanning with fish finder for 5 or 10 mins. Alarm sounds and over heat light comes on and I just put a new impeller in it. Any ideas?
Oct 26, 2019
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starstarstarstarstar 		Same thing on my 60FET
by: Bruce

Hi
Had similar issue with my 2001 60hp FET premix. Engine is 3 cyl and after confirming / replacing thermostat and water pump finally found culprit. #2 cyl had intake leak at carb mounting... no fuel no oil and cyl siezing during extended idle / low rpm. Would alarm only at idle speed as soon as throttle increased alarm would cease. Expensive repair but now very wary if low idle note changes when running.

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