75 merc 850 thermostat?

B

billdivins

Cadet
Joined
May 12, 2008
Messages
10
SHould I see water coming from the discharge at start up or is there a thermostat that needs to heat up and open. 1975 Mercury 850 85hp
 
C

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,146
Re: 75 merc 850 thermostat?

Bill, Those motors do not have thermostats. Water should come out of telltale after a few seconds. It also should come out gratings above antiventilation plate and thru hub of prop. Water should be no more than lukewarm when running of flusher, or idleing in water.
 
B

billdivins

Cadet
Joined
May 12, 2008
Messages
10
Re: 75 merc 850 thermostat?

Thanks,
Pulled lower unit and found a toasted impeller. Water running great now. Appreciate the help.
 
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