2013 B26 No Crank

Rayrla · Mar 12, 2020

Used the B26 to dig a trench for a 20 foot culvert to divert water under my driveway and spread a load of maintenance gravel. Time to complete these tasks was about 3 hours. Tractor performed flawlessly. Parked tractor for about three months and then tried to start with no success, just a click that is coming from somewhere? Can't be sure.
Trouble shooting procedure follows:
1. cleaned battery terminals and wire connections.
2. checked negative battery ground to frame-tight and clean
3. checked positive battery cable voltage at starter with ground to starter- 12.5 volts
4. bypassed seat safety switch, seat forward/reverse safety switch, fwd/rev neutral switch, and pto safety switch- still no start
5. checked continuity of safety switch wires by connecting meter to both wires going to safety switch. for pto switch checked continuity between two blades going into the switch.
6. checked OPC fuse(5amp)- good
7. ran WSM test on main switch connector wiring and main switch- good
8. checked voltage at small wire/connector going into starter solenoid and solenoid screw ground- zero volts
9. ran WSM test on engine stop solenoid relay(also called starter relay in WSM)- should read 0 ohms- actually measured 80 ohms
10. tested connector to starter relay-red wire to white wire 12.5Volts key off
black wire to white wire 0 volts key on or off
white/black wire to white wire 12.1 volts key on
My conclusions from this test(perhaps inaccurate) OPC system is operating correctly. Back to #9- is starter relay bad with reading of 80 ohms since everything appears good to the connector? Other questions..WSM states the engine stop solenoid should be checked when no start occurs. Where/ what is the engine stop solenoid? Are the engine stop solenoid and fuel cutoff solenoid the same? Help!!!!!
Another information/ suggestions are appreciated.

Dave M7040 · Mar 13, 2020

You need to do the simple test of jumping the starter to make certain it still works.

You need to be very careful doing this as all safety features are bypassed. Even better to have someone on the seat with brakes on.

The starter solenoid will have a small terminal or possibly a pigtale which is the power signal for the solenoid to pull in.

Use a piece of insulated wire and apply 12 volts to the solenoid either from the battery + or from where the battery cable connects to the solenoid.

There may be a little spark at your jumper wire as the solenoid engages.

If the starter does not work, then you now know where to focus your efforts beyond the things already done.

The engine stop solenoid is attached to the fuel injection pump.

Dave M7040

Rayrla · Mar 13, 2020

Dave M7040 said:
You need to do the simple test of jumping the starter to make certain it still works.

You need to be very careful doing this as all safety features are bypassed. Even better to have someone on the seat with brakes on.

The starter solenoid will have a small terminal or possibly a pigtale which is the power signal for the solenoid to pull in.

Use a piece of insulated wire and apply 12 volts to the solenoid either from the battery + or from where the battery cable connects to the solenoid.

There may be a little spark at your jumper wire as the solenoid engages.

If the starter does not work, then you now know where to focus your efforts beyond the things already done.

The engine stop solenoid is attached to the fuel injection pump.

Dave M7040

Hi Dave,
I forgot to mention that I did jump the starter and the starter does work. I am a little slow at figuring out electrical stuff but did separate the engine stop
solenoid and the starter solenoid last night. I was thinking that the engine stop solenoid and the starter solenoid were the same, as the WSM called the engine stop
relay and starter relay the same .From the WSM, I found a wire from the controller to the starter solenoid(pigtail connection) not from the starter solenoid relay
as I previously believed. Today I will verify on the tractor that that is correct. I was hoping that the controller was not the problem. I understand that there is no way
check the controller. You must eliminate everything else, then hopefully its the controller. Controller is over $200. Thanks to you I now know where the engine stop solenoid is. Thanks for responding and for your previous assistance.

Rayrla · Mar 15, 2020

Rayrla said:
Hi Dave,
I forgot to mention that I did jump the starter and the starter does work. I am a little slow at figuring out electrical stuff but did separate the engine stop
solenoid and the starter solenoid last night. I was thinking that the engine stop solenoid and the starter solenoid were the same, as the WSM called the engine stop
relay and starter relay the same .From the WSM, I found a wire from the controller to the starter solenoid(pigtail connection) not from the starter solenoid relay
as I previously believed. Today I will verify on the tractor that that is correct. I was hoping that the controller was not the problem. I understand that there is no way to
check the controller. You must eliminate everything else, then hopefully its the controller. Controller is over $200. Thanks to you I now know where the engine stop solenoid is. Thanks for responding and for your previous assistance.

Confirmed continuity from controller plug contact to starter solenoid. Also confirmed continuity from all contacts on the controller plug to four safety devices and main switch. I assume since I have a click at injection pump when main switch is turned to start that the engine stop relay and everything to injection pump is good. Will order new controller tomorrow.

Dave M7040 · Mar 15, 2020

Rayrla said:
Confirmed continuity from controller plug contact to starter solenoid. Also confirmed continuity from all contacts on the controller plug to four safety devices and main switch. I assume since I have a click at injection pump when main switch is turned to start that the engine stop relay and everything to injection pump is good. Will order new controller tomorrow.

I cannot think of anything else for you to check. Hope we are both not overlooking something!

Dave M7040