Buhler 2180 - Manual (Page 100)

SECTION 2 - OPERATION
2-54
When in AUTO shift, the tractor will automatically
select higher gears whenever the engine speed
exceeds a predetermined speed. It will select lower
gears when the engine speed drops below a
predetermined speed as shown in Section 5
“Specifications.”
To disengage AUTO shift and return to normal
shifting, depress the AUTO switch, upshift, or
downshift with the shift control lever.
Depressing the inching pedal or selecting neutral in
any gear other than 10th will also disengage AUTO
shift.
When in AUTO shift, the tractor will automatically
select higher gears whenever the engine speed
exceeds a predetermined speed. It will select lower
gears when the engine speed drops below a
predetermined speed as shown.
The chart at the right illustrates typical auto shift
characteristics.