Tractor or rider won't crank: safety switches
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Applies to: Lawn, garden and compact tractors (John Deere, Cub Cadet, Kubota), All years
Symptoms
- Turn the key, nothing happens
- Dies when you stand up
- Works only with the pedal pushed hard
Why it happens
The seat, PTO, brake/clutch or neutral switch isn't closing, or a wire to it is broken.
How to fix it
- Sit on the seat, PTO off, brake pressed, in neutral.
- Test each switch for continuity with a meter.
- Look for chewed or broken wires under the seat and deck.
- Replace the failed switch; don't leave a bypass in place.
Tools and parts
- Multimeter
- Replacement switch
What the factory service manual covers
Electrical: interlock wiring diagram, switch tests. The full procedure, specs and wiring diagrams are in the factory service manual for your machine.