Safety Switch issues

[Willie_B2650HSDC]

Hello
Has anyone ran into this?
sitting on the seat and PTO disengaged....no start.
engage PTO It starts.
With PTO engaged, i can climb out of the cab and tractor still runs.
With PTO disengaged, Tractor shuts down when I leave the seat.
Complete opposite to how its suppose to work.

My guess is a bad PTO safety Switch???

 

[RCW]

Did it just start doing this?

I didn’t look at a schematic, but I believe the PTO switch is activated by the PTO lever..don’t hold me to that, but maybe the switch’s mount is just loose or out of alignment/adjustment?

Just talking from memory, so don’t take as gospel.

 

[mikester]

Replaced the switch and used the wrong contacts?

 

[GreensvilleJay]

this...
With PTO engaged, i can climb out of the cab and tractor still runs.
IS a VALID 'mode of operation'.

I agree ,sounds like connector was installed wrong, though that should not be possible.

more info is needed, like 'did you replace the switch, or reinstall the connector ??

 

[Dustball]

Hello
Has anyone ran into this?
sitting on the seat and PTO disengaged....no start.
engage PTO It starts.
With PTO engaged, i can climb out of the cab and tractor still runs.
With PTO disengaged, Tractor shuts down when I leave the seat.
Complete opposite to how its suppose to work.

My guess is a bad PTO safety Switch???

Here are the conditions for a B2650HSD and B2650HSDC. The ON/OFF refers to the state of the safety switch, not the function.

Not one of the conditions below allows starting with the Independent PTO engaged (OFF).

 

[Willie_B2650HSDC]

this...
With PTO engaged, i can climb out of the cab and tractor still runs.
IS a VALID 'mode of operation'.

I agree ,sounds like connector was installed wrong, though that should not be possible.

more info is needed, like 'did you replace the switch, or reinstall the connector ??

Normally when I'm running the belly mower and don't disengage the PTO and climb out the cab the engine shuts off...This is a new issue and can only start if I engage the PTO while sitting on the sseat..
I've located what I think is the PTO safety switch and attached the two connectors together and seems to have solved the issue

 

[Willie_B2650HSDC]

Replaced the switch and used the wrong contacts?

No this just randomly started happening nothing was replaced...I think a switch has shorted out as Ive bypassed the PTO switch and everything is fine

 

[GreensvilleJay]

curious as to how anyone could run, say a 3PH/PTO run chipper if the engine shuts off when you leave the seat ?

 

[Willie_B2650HSDC]

curious as to how anyone could run, say a 3PH/PTO run chipper if the engine shuts off when you leave the seat ?

I think the mid PTO has Safety and the rear does not

 

[TheOldHokie]

I think the mid PTO has Safety and the rear does not

The answer to these things can usually be found in the manual.

For example on a L3901 the rear PTO safety switch normally shuts the engine off if you leave the seat. You can defeat that by tilting the seat forwards within 2-3 seconds of getting up.

Have you thoroughly studied your manual?

Dan