Component by component was disassembled, noting their original positions, and within just half a day, the researchers had drawn up a precise set of blueprints.
With scales marked, a copy of the blueprint was sent to the arsenal for production. This was hardly a challenge for the Romanov Kingdom; while their industry was indeed backward, they did have the necessary factories, and besides, an internal combustion engine wasn't a particularly difficult machine to manufacture...
With the blueprint in hand, the researchers only needed half an hour to restore the internal combustion engine. Filled with kerosene and with the copper wire heated up, they successfully started it.
Pugachev, surrounded by a retinue of physics, mathematics, and craftsman experts, closely inspected the internal combustion engine. Comparing it with the blueprint, they quickly grasped the working principle and, while marveling at its ingenuity, began the next phase of discussion.