The image is a photograph of a blackboard with instructions written on it. The instructions are written in white chalk and are located on the dashboard of a green vehicle. The board is attached to the dashboard with two gauges, one on the left side and one in the right side. The gauges are used to measure the speed of the vehicle's engine.

The instructions are:

1. Start engine as instructed.
2. Open cock (B) when tank air gauge shows.
3. Close cock (C) when fuel flows freely.
4. After stabilizing engine. The text on the board reads "The following instructions are very important. Must be carried out when starting diesel engines."

At the bottom of the board, there is a note that reads "After stabilizing engines."