I have a Gravely 144z with the 17hp Kawasaki engine. The mower now has 45 hours on it and has been to the dealer 5 times over the engine. I really like this mower but I am disgusted with the way it runs. It might mow perfect tomorrow and the next day it will be running along and start cutting out on me to the point that you can't even mow. The dealer says he can't find out the problem since it is intermittant. They have changed the plugs, fuel filter, fuel pump and still not fixed it. I believe they even changed the coils. While the dealer had it they loaned me a great dane with the same engine, and after a while it started acting the same although the dane's engine had 1400 hours on it, so I am not sure if it is the same problem. Has anyone else had problems with the 17hp kaw or is it just me?