Where is the thermostat on a Johnson outboard motor?

Where is the thermostat on a Johnson outboard motor?

Unbolt the thermostat housing located at the top of the cylinder head or exhaust plate (Note: for older V4 Evinrude/Johnson outboards this will be located at the bottom of the exhaust plate between the cylinder heads) 2. Remove the thermostat and place in a clear jar. 3.

How do I know if my outboard thermostat is bad?

Symptoms of a failed thermostat (open position)

  1. Engine slow to warm up.
  2. Engine not reaching its correct operating temperature.
  3. Poor cold weather performance.
  4. Water flowing from the exhaust pipe at idle.

How do you test an outboard thermostat?

Step 2: Put the thermostat in a bowl and immerse it in boiling water. As the thermostat heats up, it should open. When you remove it from the boiling water, allow it to cool and it should close again. If the thermostat remains open or closed, it has failed and must be replaced.

Where is the thermostat on a 2 stroke outboard?

On the Mercury 40-60HP 2-stroke outboards the thermostat is this thing in the top right of the port side of the outboard.

Can you run a outboard motor without a thermostat?

Can I Run My Outboard Without The Thermostat? Yes, you can temporarily run your outboard without the thermostat and not harm the engine. No, you can not remove the thermostat and continue running the engine for long periods of time without causing harm to the engine.

How often should you replace outboard thermostat?

Typically, water pumps and thermostats should be serviced every two to three years. This varies on where you do most of your boating.

Can you run a 2 stroke outboard motor without a thermostat?

Is it OK to run outboard without thermostat?

What happens when you run an engine without a thermostat?

If you drive your car without a thermostat, it will run at 50 degree centigrade. When the car drives at this temperature, moisture or humidity will form. And when it is condensed, it will mix with oil and turn into slush (watery ice). This slush blocks out lubrication.

What happens if an outboard motor overheats?

The cooling system keeps the oil temperature down so the oil can lubricate the internal parts of the engine. Overheating ruins the lubrication and the metals parts start melting and sticking together. Or they just break apart with a big bang.