I have put a cover on it, I put one on before ever running it very long.
I knew if it didn't have one it would run hotter on that side but it had been running that way since the guy I got it from had bought it. He said he used it for 2 years before the belt broke.
Just kinda worried me after I heard it doing it after it is hot, even with the new cover installed.
And I know that it is installed good because I replicated the other side almost exactly, same spacing from the head, lenght, & bends...
I painted it black and it took my buddy that went with me to help load it up, a double take to see that it wasn't factory lol!

Also were is the hydo fluid resivoir (if there is one) or where do you check it?
The pump and rear end was covered in oil/dirt paste and it took forever with a power washer to get MOST of it off not even all of it... After that the hydro seemed a lot more peppy. It has to be running a LOT cooler...