I'm new to Mahindra. Just purchased a 3510 with FEL serial # Y03 so I guess it's either 2005 or 2006. When I got it home PTO worked fine. I removed the FEL for easier access and replaced all the fluids, front end, engine oil and hydralic oil. After all the fluids were replaced with the FEL still off my PTO will not work. All the lights work switch in manual or auto,lever in either 540 or 1000. I am mechanically inclined and have read all the help on many forums. I have tried pushing in the button at the back of the solenoid and sprayed in WD40. I have power to the PTO solenoid, and can feel it kicking in when I switch on the PTO in either manual or auto. I am at my wits end. I don't want to start throwing parts at it. Any suggestion are welcome.