Model 2812523bve. Snapper 28 inch rear engine 12.5 Hp. I removed the plastic deck cover and a saw a long threaded rod with a 9/16 nut on it. I turned the nut in to reveal about another 1/4 inch of the rod thread and that adjustment raised the whole deck front and rear. I had to also adjust the rear chains to get the front to rear height correct. I now have a higher cut.There is nothing in the owners manual about that adjustment but it worked.