I-621F ne-721F ifaka amamodi amane ahlelekayo avumela abasebenzisi ukuthi bafanise okukhiphayo komshini namandla enjini atholakalayo.Ama-loader afaka ama-axle esindayo ane-auto-locking front kanye nezihlukanisi zangemuva ezivulekile ukuze zibambe kahle ezimeni eziningi.I-axle yakhelwe ukusiza ukunciphisa ukuguga kwamasondo, ikakhulukazi ezindaweni eziqinile, ngokusho kwe-OEM.I-621F kanye ne-721F zinikeza Iphakheji Elisebenza Ngazo Lokuzikhethela elihlanganisa ukudluliselwa kwamasivinini amahlanu okuguquguquka kwetorque yokuvala isivinini sokuhamba emgwaqeni, ukusheshisa kanye nezikhathi zomjikelezo omfushane, kanye nama-ekseli anomehluko wokukhiya okuzenzakalelayo nohlelo oluthuthukisiwe lwesistimu.Ukudluliselwa kwamagiya amahlanu ongakhetha kukho kufaka phakathi isici se-Case Powerinch esivumela opharetha ukuthi bafinyelele okuqondiwe ngokushesha nangokunembile ngaphandle kwesivinini senjini.I-Case ithi lesi sici siqinisekisa ukuthi akukho ukuhlehla ngisho nasemithambekeni ewumqansa, okwenza kube lula futhi kusheshe ukulahla elolini.