Identify faults faster with the John Deere 135G Operation and Test Manual (TM12666). Master the logic of your reduced-tail-swing (RTS) iT4 machine.
### **Diagnostic Tools:**
* **Electrical Maps:** Full machine wiring diagrams for circuit tracing.
* **Operational Tests:** Step-by-step performance verification for engine and hydraulics.
* **DTC Lookup:** Definitions and solution paths for all machine diagnostic codes.
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