need help

[blackjack30]

how hard is it to change a thermostat on a 9.8 hp merc...

 

[galamb]

If it's actually a 9.8 then it's really easy, if it's a 110 model, they didn't have a thermostat.

On the 9.8's the thermostat cover is located on the top of the exhaust cover. It isn't even bolted down, just kept in place by a big retaining spring (kinda like what keeps the top on the fluid resevoir on the master brake cylinder of a car).

So, you just snap her open and replace the thermostat, the cover gasket and the thermostat gasket (total cost about 15 bucks of parts) and snap her closed - total time 15 minutes (that includes stopping to drink a beer midway through the job)

 

[blackjack30]

its a 9.8 hp and above it says 110. The problem i have is hot water coming out of p-hole

 

[blackjack30]

9.8 hp/110 m

If it does not have a tstat, would it be water pump causing hot water to come out of p hole ?

 

[fastjeff]

Of course it's hot--it just cooled the power head. If you can KEEP your hand on the exhaust plate when it's running, it's okay.

Jeff

 

[blackjack30]

no i can not keep hand on it