【Honda Technology】 BF350 Assembly by a Small Team of Workers

Detailed technical explanations are available on the Honda technology site. Also check this.
https://global.honda/en/tech/BF350_with_V8_350-Horsepower_engine/

While the small 2 HP to 6 HP models are produced elsewhere, Hosoe Outboard Engine Plant is responsible for production and global supply, including to Japan, of 21 outboard motor models*1 ranging from 8 HP to 350 HP. Honda’s flagship BF350 outboard motor is assembled by a small team of workers on a dedicated cell production line.

*1. As of March 2024 / Small 2 HP to 6 HP outboard motor models are produced by Honda Power Products (China) Co., Ltd.