BobRip
Elite Member
I am have some back issues after driving the PT422. I looked at the seat suspension and if you compare it to a typical riding mower it actually has none. The riding mower seat has a hinged front and springs supporting the back of the seat. The PT422 pivots on bolts, but really has no suspension. An old style tractor at least has a U shaped spring. In an effort to solve this problem I installed a suspension seat (Model A-W223YL) from Tractor Supply. It has adjustable spring tension to compensate for your weight. It cost about $100. I had to removed the 10 Micron Filter cap on the hydraulic reservoir and go back to the original unfiltered cap to get enough head room, but otherwise it was not to bad. I originally mounted it too far forward and had to remount it twice. This required drilling extra holes. We will see if this helps the problem.