My BX 2680 starts and Idles but when you push on the peddle it stalls. I have drained the tank. fresh fuel and replaced the filters, still the same problem. Don't know what to do.
If you sense a 1 second delay before the engine stalls, then the Operator Presence Controller( OPC) is taking charge and having the OPC timer send power to the engine stop solenoid which stops the engine. The OPC timer is a one second device.My BX 2680 starts and Idles but when you push on the peddle it stalls. I have drained the tank. fresh fuel and replaced the filters, still the same problem. Don't know what to do.
I can move my 2380 while standing beside it, pushing the tredle with my hand. Been this way since new (2017).... Did KB change something?If you sense a 1 second delay before the engine stalls, then the Operator Presence Controller( OPC) is taking charge and having the OPC timer send power to the engine stop solenoid which stops the engine. The OPC timer is a one second device.
In your situation, you sense the stall as you push on the HST pedal.
I suspect the seat switch is making the OPC think you are not in the seat and the tractor is being moved.
If there is a tiny delay between pushing the pedal and the stall, then I think my diagnosis is correct.
Many owners, when they closely examine the seat switch wiring, find damage to either the wiring or switch.
The engine is stopped by applying power to the engine stop solenoid. If you disconnect its wire, then the various safety devices cannot stop the engine as I am suggesting might be happening
Dave
No your OPC is not operating properly. Possibly your OPC timer has failed which is why the designers wanted owners to be regularly checking for the proper functioning of the OPC systemI can move my 2380 while standing beside it, pushing the tredle with my hand. Been this way since new (2017).... Did KB change something?
Mine (1880) will also do this but only if you move EXTREMELY slow. Just barely press the pedal so it creeps along at slug speed. Press any harder it stops immediatelyI can move my 2380 while standing beside it, pushing the tredle with my hand. Been this way since new (2017).... Did KB change something?
Again, something is not right with your tractor. Perhaps the HST pedal switch is improperly adjusted but whatever is wrong is unsafe.Mine (1880) will also do this but only if you move EXTREMELY slow. Just barely press the pedal so it creeps along at slug speed. Press any harder it stops immediately
I'll have to try this. I typically move it very slowly anyway, inching into my tight (fore & aft, not width..) parking spot.Mine (1880) will also do this but only if you move EXTREMELY slow. Just barely press the pedal so it creeps along at slug speed. Press any harder it stops immediately
Thanks to all of you who have commented . It did turn out to be the safety switch in the seat. I did try the shut off valve first and was able to drive the tractor. The I by-passed the seat and that worked. I did purchase, both the seat switch and the opc just for good measure. Once again, Thats to all of you.My BX 2680 starts and Idles but when you push on the peddle it stalls. I have drained the tank. fresh fuel and replaced the filters, still the same problem. Don't know what to do.
did you figure out your problem? I have the same issue on the same bx2680 model. I inadvertently shorted the seat relay down at the seat hinge which blew the 15 OPC fuse, the engine died, restarted it and fwd/rev worked, got done and the key wouldn't turn off the engine. so I replaced the 10a OPC, and had to pull the 15A ignition stop then the key worked...My BX 2680 starts and Idles but when you push on the peddle it stalls. I have drained the tank. fresh fuel and replaced the filters, still the same problem. Don't know what to do.
Dave, this is exactly what is happening on my bx2680. there is a delay for engine stall when pressing the hst pedal, I suspected the OPC system as you mention here. question: when you say "If you sense a 1 second delay before the engine stalls, then the Operator Presence Controller( OPC) is taking charge and having the OPC timer send power to the engine stop solenoid which stops the engine. The OPC timer is a one second device.
In your situation, you sense the stall as you push on the HST pedal.
I suspect the seat switch is making the OPC think you are not in the seat and the tractor is being moved.
If there is a tiny delay between pushing the pedal and the stall, then I think my diagnosis is correct.
Many owners, when they closely examine the seat switch wiring, find damage to either the wiring or switch.
The engine is stopped by applying power to the engine stop solenoid. If you disconnect its wire, then the various safety devices cannot stop the engine as I am suggesting might be happening
Dave
mine turned out to be the actual seat switch. I finally got out of the weather enough to test it properly. I did get the turn-over seat switch replaced and then removed the actual seat connector and jumped it and tested it and the engine dies about 1 sec after engaging HST if that harness isn't jumped. I'm not 100% sure both switches weren't bad. I will check the old turn-over switch and update you. if both were bad that would explain why I got turned around when trying to isolate which switch. but I will say it was like 10 degrees and mentally I wasn't exactly my best!!!My BX 2680 starts and Idles but when you push on the peddle it stalls. I have drained the tank. fresh fuel and replaced the filters, still the same problem. Don't know what to do.
ok so mine is fixed. there are two "seat" switches and its confusing because in the parts description they both say seat switch. The One pictured in this thread by another user is actually the tip-over switch, it is actually in the hinge are of the seat driver's left hand if behind the tractor, the seat has to be raised all the way up and then its activated, dealer told me it also had something to do with the back hoe option. the other seat switch is embedded in the center of the seat. In my case once I got out of the crazy single digit weather was able to troubleshoot and discovered the switch in the seat was bad. part number for the this switch is K1122-62280. Believe it or not, if you short this to ground (not the best advice) it will blow the fuse and kill the engine, you then can restart the tractor and run all day. keep in mind you OPC is disabled and not advisable. you will not be able to turn the engine off until you replace the fuse blown and you will have to pull the ignition stop fuse 15A blue fuse next to the OPC 10A fuseMy BX 2680 starts and Idles but when you push on the peddle it stalls. I have drained the tank. fresh fuel and replaced the filters, still the same problem. Don't know what to do.