Kubota BX2360 won't restart/deadman's switch?

ACL

New member

Equipment
BX2360
Dec 4, 2011
3
2
0
OR, USA
My father borrowed my 2009 Kubota BX2360 tractor with mower attached to the rear PTO. After disengaging the PTO, with the engine running, he got up to move some logs in his path. The engine died immediately when he got up. We have not be able to restart the tractor since. The PTO lever is in the disengaged position and despite following normal start up procedure the tractor won't start. The starter was tested and is fine. Any suggestions?
 

ACL

New member

Equipment
BX2360
Dec 4, 2011
3
2
0
OR, USA
Is there a sensor in the seat that might have fowled up?!
There is a plug with wires going into the seat but aside from what is hidden in the seat nothing appears out of place or disconnected. Since getting off the seat seemed to engage the deadman's switch despite the PTO being "disengaged" we are leaning towards the notion that the tractor thinks the PTO is still is engaged despite the lever position indicating otherwise.
 

birddogger

New member
May 29, 2011
433
0
0
Pittsburgh
This can get crazy depending on the model, there can be up to 6 safety switches. I would first verify the seat switch since it was the last known activity. Then the neutral safety switch, PTO switch; find neutrals shake the levers. If this unit has the single pedal for motion (not the rocker) there's one on the pedal that senses the pedal is pushed (no start) push the pedal down a bit and let it snap back up. Maybe one that says the brake needs to be on to start.
 

Kubota_Man

Member

Equipment
BX24, Rear blade, Front blade, Snowblower, 54" MMM, Box scraper, Landscape rake
Dec 25, 2010
953
2
18
Kellogg, Idaho
Even if the PTO leaver in in the disengaged position sometimes a very small wiggle of the leaver may trip the switch. On my BX24 I have had this issues quite a few times till I bent slightly the tab that covers the safty switch on the PTO leaver. Notice I said slightly as not to bypass the safty switch but make it a bit less tempermental.
 
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cabu

Member
Lifetime Member

Equipment
Kuno B1-15 (B1502DT)
May 24, 2009
736
2
18
Germany, Oyten
"up to 6 safety switches..." :confused:

I like to use my brain and disabled my switches from three to one. To much electric are to many possibilities for failures. And I am an engineer in elecronics!

As the other suggested measure at all switches if they are connected to ground or not. Some safety-switches are parallel to each other some are in serial. That means, that you can measure a signal at a switch, but it is from a switch in the wire befor it...

Searching that kind of failures with noch schematic is no fun...

carl
 

ACL

New member

Equipment
BX2360
Dec 4, 2011
3
2
0
OR, USA
Well, problem solved. After disconnecting and reconnecting every electric connection I could find without resolution of the problem, I figured it out. I followed the lever that engages the PTO down into the wheelwell, looking for a switch or electrical wire that does not exist. There is a stop that I thought was mechanical to keep the lever from going too far. When I dusted it off, the tractor started. I presume that the stop is making an electrical connection. If this is the case, it is bad design because it is in the wheelwell and is going to get dusty again. At least now I know where to look first.
 
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Kubota_Man

Member

Equipment
BX24, Rear blade, Front blade, Snowblower, 54" MMM, Box scraper, Landscape rake
Dec 25, 2010
953
2
18
Kellogg, Idaho
My bet is that after you cleaned it and put the PTO leaver back is that you got it all the way seated. If it happenes again try bending the stop a touch. I would think the only electrical contacts would be contained within the switch.

Anyways I am glad you got it up and running :D