Hey guys. Im from texas and was wandering a few things about my l175. #1, it smokes inttermittently.#2, what is the front pto for and how could it be used?#3, what are the loud engine http://www.youtube.com/watch?v=ku9txwjnGes&feature=em-upload_ownernoises about, it sounds like a knock? And what are the basics on my tractor, such as power, what size implements can i use, and the cooling system. It overheats very easily. Thanks