The HG Feeder 600 model features:
■ A quicker and stronger feed pump
■ Electric blowers that automatically the oil- and watercooler for
straw and dust
■ A drive system, where the first two-thirds of the pedals movement are for feeding speed

Спасибо.

The speed pedal is set up such that the first two-thirds are for feeding speed, while the last third is for high speed (up to 18 km per hour).

насчёт "first two-thirds of the pedals movement are for feeding speed" есть догадки, но думаю, откликнутся более грамотные технически.

feeding speed - регулирование расхода/подачи корма