Thermostat Location?

nscvol

Cadet
Joined
Sep 23, 2009
Messages
11
Hey everyone... Needing to change the stats in my 77 115 Johnson... Having trouble locating them... This is a new boat to me and I'm not real familiar with this engine... Can anyone tell me where they are located? Thanks in advance!
 

Daviet

Fleet Admiral
Joined
Sep 24, 2008
Messages
8,958
Re: Thermostat Location?

If you stand behind the engine and look at the cylinder heads, you will see a hose from each head going to a housing in the middle of the engine. The thermostat is inside that housing.
 

nscvol

Cadet
Joined
Sep 23, 2009
Messages
11
Re: Thermostat Location?

I thought that might be it.. It's the little solid brass piece... Thanks!
 

Vic.S

Rear Admiral
Joined
May 4, 2004
Messages
4,690
Re: Thermostat Location?

The diagram HERE may help as there are quite a few bits and pieces to the whole Venatherm and pressure control assembly. (Enlarge it fully with your browser magnifier to view it)

# 45 is the cover to which the hoses attach. #48 is the Venatherm. #54 is the Venatherm Valve and #55 the spring.
#47 is a check valve and #53 its spring.

Full parts list for this section HERE
 
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