Merc thermostat temp

grandx

Petty Officer 1st Class
Joined
May 21, 2001
Messages
383
Have a pair of CR 150 mercs, 96 model carburated serial # 0G374411. Cannot find temperature rating of my thermostats in my Clymer manual. Does anyone know what the proper thermostat rating is for this motor?
 

clanton

Rear Admiral
Joined
Jul 9, 2001
Messages
4,876
Re: Merc thermostat temp

Probley 143 F,can check book monday.
 

clanton

Rear Admiral
Joined
Jul 9, 2001
Messages
4,876
Re: Merc thermostat temp

Book says thermostat must start to open at 140-145 degrees F.
 

grandx

Petty Officer 1st Class
Joined
May 21, 2001
Messages
383
Re: Merc thermostat temp

Thanks<br />That's what I expected, just wanted confirmation. Although thermostat is open at 145, Does your book say how hot engines should run?? 145+20=165 max, I think my book does say 20 deg above thermostat rating???
 
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