where & what exactly is the suction line? I have had this tractor for many yrs but I dont live in the area where I bought and had it serviced. Plus I'm a female that really doesnt know the ins & outs of this unit. Have to have it "spelled out" in simple terms. I do know where the hydraulic fluid tank is. I see the big lines coming out of the tank. thks again. Any help is appreciated. KL