Mower blades will not turn on with pto switch engaged on john deere stx 46

Just out of curiosity check your pigtail that plugs into the pot harness. I have ran into a broken wire inside that pigtail before.

Check your fuse or for a broken wire( or shorted)

Most of these mowers have a safety switch between the PTO switch and clutch. A safety switch or relay is most likely the problem. Hope this will help ya.

check for power and ground going to the clutch

electric pto clutches go bad, turn your ignition switch to the on position and turn your your pto switch on and see if you hear a click if you do that is the pto working if not check and see if you have a fuse for the pto i have seen switches go bad and it could be the pto clutch it self

check the safety switches

it sounds like the safety switch under seat is bad

Are the blades turning? If they are not, this is normal. The PTO is an electro magnetic clutch that engages when you apply electricity via the PTO switch. When it is disengaged, the bearings and top portion of the clutch will turn because it is coupled to the engine. If the blades ARE turning then you have a bad clutch and will need to repair or replace it

Are the blades turning? If they are not, this is normal. The PTO is an electro magnetic clutch that engages when you apply electricity via the PTO switch. When it is disengaged, the bearings and top portion of the clutch will turn because it is coupled to the engine. If the blades ARE turning then you have a bad clutch and will need to repair or replace it

May be a safety switch not letting the PTO engage the clutch? Also check your voltage at the battery...too low a voltage won't let the clutch engage either. Should be between 13.3-14v at full throttle.