нет, опечатка, from the screw to the mixer..)
the bushings on the shaft of the tipping knives
the bushings on the shaft of the tipping knives are installed.
да в общем нет, наверное) может так Dosage of water supply is big . It has an inaccuracy.
а с 4 вообще засада, может что-то вроде support bearings on the screw dropping gypsum into the mixer have frequent breakdowns.