Cub Cadet Ultima ZT Series Operator's Manual page 18

Turning While Driving Rearward
To turn the tractor while driving rearward, move the lapbar
drive control levers as necessary so that one drive control lever is
forward of the other. The tractor will turn in the direction of the
forward lapbar drive control lever.
1. To turn to the left while traveling in reverse, move the left
drive control lever forward of the right drive control lever
(Figure 26).
Rearward Left Turn
Figure 26
2. To turn to the right while traveling in reverse, move the right
drive control lever forward of the left drive control lever
(Figure 27).
Rearward Right Turn
Figure 27
NOTE: The greater the distance between the two lapbar drive
control levers, the sharper the tractor will turn.
3. To execute a "pivot turn," move the turn side drive control
lever to the neutral position, while moving the other drive
control lever rearward.
NOTE: Making a "pivot turn" on grass will greatly increase the
potential for defacement of the turf.
OPERATION
Executing a Zero Turn
1. Stop the forward or reverse motion of the tractor by moving
the two lapbar drive control levers to neutral
2. To turn clockwise, move the left lapbar drive control lever
forward while simultaneously moving the right lapbar drive
control lever rearward (Figure 28).
3. To turn counterclockwise, move the lapbar right drive control
lever forward while simultaneously moving the left lapbar
drive control lever rearward (Figure 29).
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Rearward Right Turn
Figure 28
Counterclockwise Zero Turn
Figure 29