What is the schematic diagram of the walking tractor I-type gearshift operation and the method of hanging gears?

Below the left reverse gear on the right side of the first gear above the right 2 gears, the left 3 gears, the middle of the neutral gear, neutral gear below a handle is a sub-shift, after pulling out is the slow gear, that is, the whole gear can be 6 forward gears, 2 reverse gears.

The walk-behind tractor is a small tractor. Europe and the United States called garden tractor. By the engine, chassis, electrical and other systems mainly for traction and transportation of multi-purpose walking machinery. Walking tractor can travel by the power of the internal combustion engine through the transmission system, drive torque drive wheels and then through the tire tread and tire surface to the ground small, backward horizontal force (tangential force), this reaction force is to promote the tractor forward driving force (also known as the bit of propulsion). Simple structure, small power, suitable for small plowing. By the driver holding the handrail frame control maneuvering mechanism, traction or drive supporting farm equipment for operation.