Yamaha 25 hp 2004 4stk over heatin

Johnrude122

Cadet
Joined
Dec 3, 2008
Messages
28
the impeller is in the mail, but everyone is tellin me that it is the thermostat. I looked on this website and wasnt sure which one to get can anybody help me on which on to get
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
9,126
Re: Yamaha 25 hp 2004 4stk over heatin

pull the thermostat and test in a pot of water with a thermometer to see if and when it is opening and closing and make sure it is opening as far as it should. If it does not function properly look up the parts needed by the model and year number.

http://www.yamaha-motor.com/outboard/parts/home.aspx
 
Last edited:

Johnrude122

Cadet
Joined
Dec 3, 2008
Messages
28
Re: Yamaha 25 hp 2004 4stk over heatin

does anyone know if there are any tips or tricks to getting the lower unit off to replace the impeller, im a do it urself kinda guy, and have done this type of stuff before and know some engines can be tricky
 
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