I am a new member on this forum and I recently acquired a 1991 Snapper tractor Model YT18H with the 18 hp Kohler MAGNUM engine Model – M18S. I’m looking forward to this forum and I hope you can help me to get it running better.
I had a little experiance with a Snapper YT18 with a Kohler M18S engine this summer. The previous owner said the wiring harness was burned out so I ended up parting the tractor out. I never tried adjusting the engine because it ran great from the day I bought it so I'm not certain I can help you much with getting your tractor to run better, but please explain your problem a little and we'll try to help.