**IMPORTANT**: Please ensure you have read the safety information in the previous chapter before commencing installation of **COMMAND**.
### Machine Preparation Complete the following steps before beginning installation of the **COMMAND** ECU:| **Step** | **Check** |
| Move the tractor and implement to a level, hard surface suitable for maintenance work. | |
| Center the steering wheels. For articulated tractors, engage the articulation locks to prevent movement. | |
| Fully lower any attachments or implements to the ground to ensure stability. | |
| Turn off the engine and remove the ignition key. | |
| Block both the front and rear wheels to prevent accidental movement of the machine during installation. | |
| Allow the engine and hydraulic system to cool completely before working near hot components. | |
| Disconnect the battery cables. Place a **“Do Not Operate”** tag in a visible location in the cab, and install a **lockout box** on the battery terminal to prevent accidental power reconnection. | |
| Before opening any hydraulic, pneumatic, or coolant lines, relieve system pressure. Use caution when removing fill caps or hose fittings—cover the area with a clean rag to contain any residual pressure or fluid spray. | |
| Unbox all kit components and verify the contents against the packing list. Lay out the parts on a clean, organized work surface to streamline installation. |