Lub 621F thiab 721F muaj plaub hom kev siv hluav taws xob uas tso cai rau cov neeg siv kom phim lub tshuab tso tawm kom muaj lub zog muaj zog.Cov loaders muaj xws li hnyav-duty axles nrog nws pib-locking pem hauv ntej thiab qhib rear sib txawv rau kev pom traction nyob rau hauv ib tug ntau yam ntawm tej yam kev mob.Lub qag yog tsim los pab txo cov log tsheb, tshwj xeeb tshaj yog ntawm cov tawv tawv, raws li OEM.Lub 621F thiab 721F muab ib qho kev xaiv Efficiency Package uas muaj xws li tsib-ceev kis tau tus mob nrog xauv-up torque converter rau txoj kev mus ceev ceev, acceleration thiab luv lub voj voog lub sij hawm, raws li zoo raws li axles nrog nws pib xauv qhov sib txawv thiab advanced system programming.Qhov kev xaiv tsib-ceev kis tau tus mob suav nrog Case Powerinch feature uas cia cov neeg ua haujlwm mus cuag cov hom phiaj sai thiab meej tsis hais lub cav ceev.Case hais tias qhov tshwj xeeb no ua kom tsis muaj qhov rov qab txawm tias nyob rau qhov chaw siab tshaj, ua kom yooj yim dua thiab nrawm dua pov tseg rau hauv lub tsheb.