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25 merc


walleye_bill's Avatar
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Join Date: Jul 2009
Posts: 12

08-02-09, 06:54 AM   #1  
25 merc

hello i have either a 1987 or 1988 tiller model merc outboard.
does anyone know if these have thermostats ?
because my repair manual shows absolutley nothing on thermostats, or replacement.
thanks

 
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samuari's Avatar
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Join Date: Jul 2008
Posts: 541
MN

08-02-09, 05:49 PM   #2  
I'll take a look tomorrow I have been out of town, another thing to check is the pop off valve. If it sticks shut it will cool while at idle but won't let enough water through the powrehead at full throttle.

 
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