Any help would be appreciated. The fan on my sons trail boss comes on as soon as the key is turned on and never goes off until the key is turned off. If I play with the thermal switch it will turn on and off. I assume it is the switch that is bad. I have searched on here and the internet in general to find a replacement switch. I have even looked at all the parts diagrams for the machine, and I cannot find it.

It is located near the carburetor and has two wires going to it. It is a small round switch.

Does anyone know what the part number is or where to find out?

Thank you.