I have never heard of been able to do this, in one of these type tractors. We had a 14145 didn't anyway. That lever on the floor eventhough it has a badge on the side shows PTO 540/1000. It didn't put it into 1000 there and the other positions were neutral. The only big
zetor I had with ground speed was a Forterra 10641, which was replaced by economy on the HSX.
Can I asked what machine are working that you call "lift pump". Your lift pump is your
hydraulic pump in the tractor, on the left side. So you talking about something else?