My Deere LA 115 has begun mis-firing when it warms up. Manipulating the choke doesn't make any difference. The troubleshooting section of the manual says I should try changing the oil. The engine has 13 hours on it.
My question is this...why does oil have anything to do with a mis-fiiring...
I have had my Deere riding mower for 18 months. It has behaved well until about a month ago. By and large, I am very satisfied with it. My back yard has some hills and gullies in it so I can't use it to mow the entire back yard. I also have some stumps that I have to carefully avoid when mowing...