40hp merc outboard have thermostat

rsgonza

Seaman
Joined
Feb 18, 2002
Messages
72
I have a merc outboard 40 hp ser#555407 Does this have a thermostat? water does not come out of tail tale stream at idle.any help would be appreciated :)
 

Case

Cadet
Joined
Nov 17, 2001
Messages
25
Re: 40hp merc outboard have thermostat

Tex,<br /><br />Had this problem with my Mariner and got awsome help on this board. Turned out that I had trash in the pee hole right at the outlet. Try cleaning that first with a straightened paper clip or a pipe cleaner and see if that don't fix it.<br /><br />When did you last change the pump impeller?<br /><br />Case :cool:
 

rsgonza

Seaman
Joined
Feb 18, 2002
Messages
72
Re: 40hp merc outboard have thermostat

Thanks for the quick responce ill try cleaning the hole. its been about two years i guess its time to change
 
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