$400 · *wont start* John Deere Lawn Tractor Mower

It was working great until it wasent. LA135 Series tractor. I bought the grass catchment system 2 years ago for $400 from JD in Nanaimo. This spring, I tried to mow the lawn, but the engine won’t turn over. Spark plugs look ok. Oil looks good. Fuel seems ok. I’m not a mechanic. I live on 6 acres of lawn, but am moving June 26 to a small patch of grass. I will buy a robot lawn mower for my back yard. So this tractor is broke and I don’t want to pay to fix it- so I’m selling it cheap and hopefully someone in the community can get it started and enjoy the insanity of mowing lawns for life. I quit.