Is it necessary to cut food before putting it in the juicer?

Juicers

• Each food has its own preparation methods before putting it in the juicer, depending on its specific characteristics.
  • e.g. celery stalk – due to atypically hard and long fibers, celery stalk needs to be cut and shortened to 1 cm – 4 cm in length (except REVO model)
  • e.g. beetroot – due to its extremely rigid structure, it needs to be cut into slices like meatballs
  • All instructions are included with the juicer.