HELP! My ZD326 kills when I move a handle

[Richard001]

Go here, down load the user manual, it has the wiring diagram:

ZD321,ZD326,ZD331 ZERO TURN MOWER​

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This Workshop Manual has been prepared to provide servicing personnel with information on the mechanism, service and maintenance of ZD321, ZD326 and ZD331. It ...
279 pages

 

[tallyho8]

Does anyone have a part number?

 

[ddbackhoe]

I had one where the switches were misaligned. If you brought either handle in it died. Both handles pulled at same time and it would go.
Good luck, these things get frustrating

 

[tallyho8]

Is this the brake light switch or the brake safety switch? The pedal does not align with this switch and never pushes it in. If the engine is running and I am off the tractor and push this switch in, it will kill the motor. If I am sitting on the seat and push the button in, it will keep running but when I move the control levers, it kills.

 

[tallyho8]

Got it fixed. The brake pedal was not pushing the brake switch in because an inch broke off of the brace that is supposed to push in the button. I don't know what could have caused that 1/4" steel brace to break because it wasn't in an area where it could hit anything.

With a little tenderness and a lot of sweat I was able to bend some brackets where the pedal would line up with the button. Very unusual situation.

 

[RandyT]

The switch mounting bracket is definitely bent or broke. You can see in the pictures were the button normally hits the tab to push the button.

 

[tallyho8]

It isn't the mounting bracket that's broken. It is the tab on the brake pedal that pushes in the switch button. In the photo you can see it is broken off about 1/8" before it touches the button.

 

[Linda White]

I have not found any info on a BRAKE SAFETY SWITCH. I Googled and can not find anything called that or any info on where it is or what it looks like. There are lots of brake light switches and lots of safety switches. I couldn't find anything on Messick's website.

I searched it on fridayparts and maxi force, I found it called "safe brake switch" at fridayparts(Is it same?), but,,, it's not compatible with your brand equipment. Maybe you can search more on different platforms.

 

[Suburban Plowboy]

You are so lucky. I just went through torment fixing a starting issue with my Kubota. I know almost everything about the starting system now.

The brake switch is NC, which means "normally closed." It is normally closed ("on") when the controller will not let the mower start. When you push the pedal, it opens the switch, the controller is happy, and the mower starts.

You can test the switch just by pulling the connector off of it. This opens the circuit like a new switch with the brake depressed. You can also test the resistance with a meter. It should be infinite when the plunger is pressed and 0 when it is extended.

The part number is K7561-62250. It's like $11. You probably won't be able to get it except through a dealer.

The tractor doesn't need the switch to run.