Permobil X850 Corpus 3G User Manual page 57

Put the adjustment rod in the preferred position. The measurements below
indicate the distance between the centre of the front and rear wheels.
Settings
to = 815 mm
to = 850 mm
to = 885 mm
to = 910 mm
to = 945 mm
to = 980 mm
to = 1015 mm
Wheelchair usage - 57