I have used this site a few times for questions on my Model L walk behind and am grateful for the help. The machine is so reliable and rugged I rarely have to do anything to it. Most of the times I visit this site I read what is going on with other peoples machines. I have been through the engine a couple of times since I have had mine. Once for normal wear, once because of my doing. The trans has been rebuilt. I have refurbished the rototiller inside and out including welding a cracked gear housing which has worked well. These machines never cease to amaze me with what they can do. Have a great day.