walker 48??

I have been looking for a walker. I bought a ferris mower in the beginning of the year. Don't want to pay the money for a collection system. Found a 2004 walker with 26 HP efi engine with 2020 hours. He wants 4400 for it. It look in great shape. Anything to look for when looking at a used walker? Help would be great!!!!

Here's a link to the add
https://cleveland.craigslist.org/grd/4619879142.html