:aj: I was just cleaning up the 440 I have and I had it running. I noticed there was a clear tube going into the crank case/Tran area. Is there supposed to be coolant or oil running through it? And if I want to drain and change the coolant how do I do it and what do I use? Please help, I would like to do it right the first time and not screw up my bike. Also how do I adjust the fuel mixture, I had to turn a screw between the air cleener and the cab three turns to the right to keep the bike ideling but it sure smokes alot even after I warm it up. It is a 2 stroke. :worship: