I agree with SV--The early 7020 had the same engine as a 4620 and the later ones had the 4630 engine--so The knob shut-off is most likely the linkage on the side of the pump--have someone run the throttle while you watch the lever on the side of the pump. You might have to adjust the linkage. Like SV said--the charge pump feeds your main pump and when you push in the clutch it stops--I would start by changing the hydraulic oil filter first and go from there.---Get your muti-meter out and stat checking voltage while someone runs the key for you starter trouble--you should be able to narrow it down pretty fast.---I would check the PTO cable -If the previous owner never used it the cable most likely froze--Penetrating oil?--Good luck--My first 4-wheel drive was a 7020--remember--NO live PTO--Good Luck---TEE Had a Deere 3200 6-18's plow--pulled it good--I wished I would have kept the 7020--Mine was a early one but someone put the 4630 engine in it.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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