Case 580SR Service Manual page 74

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8 SECTION 21 - TRANSMISSION
Forward/reverse powershuttle lever
To select FORWARD travel, engage the required
gear ratio with the gearshift lever, then with the en-
gine idling lift the powershuttle lever from the neutral
lock position (1) and move to the forward position (2).
Use the accelerator pedal to control the engine rpm
and the ground speed.
To reverse the direction of travel, reduce engine
speed and move the power reversing from neutral
lock position (1) and rearwards (3) for reverse travel
an audible alarm device sounds.
NOTE: the powershuttle lever is equipped with a
neutral lock to prevent inadvertent engagement of
the transmission. With this design, the powershuttle
lever moves through a "T" slot to the forward or re-
verse positions.
IMPORTANT: when operating at low environmental
temperatures with cold transmission oil, allow the oil
to warm up before attempting to shift the powershut-
tle lever. The transmission can be shifted normally
after the oil warms up.
NOTE: the audible alarm sounds if the powershuttle
lever is operated (forward or reverse) with the park-
ing brake engaged.
NOTE: the powershuttle lever can be shifted at any
engine speed, however, for safe, smooth operation
the engine speed should be reduced to approximate-
ly 1200 rpm. This action is easily controlled by using
the foot accelerator to control engine and ground
speed.