Got tractor from a relative so can't attest to what worked or its history. I noticed that the PTO won't engage. The PTO safety works and tractor won't start with PTO engaged. However the tractor will start without the clutch engaged. I don't have a B3300 WSM but do have a B3200 WSM which appears to be very similar but nothing in trouble shooting for this and can't find a clutch safety switch in the wiring diagram. There is a HST switch but since it starts not sure how that would disable the start for the clutch. The only procedure I can find is the Clutch Free travel check.