It can be the simplest style of gearbox. The arrangement of gears is in a neutral posture. The gear housing and bearing will not be shown. The clutch gear is set into the clutch shaft. It stays always connected to the travel gear from the counter-shaft. Yearly gearbox inspection. https://gearbox20741.blogscribble.com/33877444/the-smart-trick-of-gearbox-that-nobody-is-discussing