How an outboard Thermostat works - Evinrude Thermostat test

This is a Thermostat from a 1990's Evinrude outboard.
Camera used:
Sony Alpha a6300 Mirrorless Digital Camera
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Sony SELP1650 16-50mm Power Zoom Lens
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Sony VCLECU2 12-16 MM,f/2.8 Petal Shaped Fixed Ultra Wide Converter for SEL16F28 and SEL20F28
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Sony E 55-210mm F4.5-6.3 Lens for Sony E-Mount Cameras
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[@Ceviche956]

Great video thank you

[@rickeyholtsclaw7764]

Thank you...any idea how the little plunger is pushed up to the open position?

[@cenkaetaya]

I believe the metal it's made of, or what's under it contracts and expands due to heat.

[@rickeyholtsclaw7764]

@@cenkaetaya Thank you...I have one from my Mercury Verado Outboard sitting here on my computer desk and I was thinking the same thing....thank you...

[@fishmania]

Can you take it out and just work the motor without thermostat? I'm on the Caribbean sea so water is always 23/26 °C

[@cenkaetaya]

From what I read on forums, you can.... But the motor really has a specific temp it's meant to run at. If it runs too cool, it's not good for it. That's all I read about it.