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Ask Dominick Your Own Question
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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I have a 40 hp merc outboard. it has a temperature switch

Customer Question

I have a 40 hp merc outboard . it has a temperature switch beside the
top spark plug. switch part number is ***** 3
CLOSE AT ? it is not a sender , it is a make or brake temp switch.
Submitted: 4 months ago.
Category: Boat
Expert:  Charles replied 4 months ago.

Hello, my name is***** will assist you.

Have you tested the engine temp with an IR temp gun?

When was the last time that you had the cooling system serviced?

Customer: replied 4 months ago.
I am a mechanic myself. I have done all of that. I asked what temperature does the
Paticular temp switch i gave you the part number for close ????? Thats what i need
To know.
Expert:  Charles replied 4 months ago.

Around 165* F

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