I recently purchased this 88 Foreman (TRX350) and I have noticed one thing after reading through some threads. The fan is on from first turn of the key and I do not get that momentary oil temp light.

So is the first thing people usually go for the temp sensor itself? I have a meter so I could do some troubleshooting if I had a schematic or a verbal on what I should be reading through the sensor.

I imagine the fan running all the time isn;t that big of a deal except for wearing down its life faster.