Navistar WorkStar Series, Operator'S Manual

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Controls/Features
4. To change from this initial setting, use the appropriate
control to raise or lower the engine speed as you would
in the cruise control mode.
SET/CRUISE reduces
engine speed and RESUME/ACCEL increases engine
speed.
5. Press the OFF position of the ON/OFF control to turn
the throttle off and return the engine to idle.
Stationary Variable Speed Control (12VXT)
This feature is ordered to provide variable engine speed control
primarily for operation of PTO powered equipment. It operates
the same as the Cruise/ Throttle controls discussed above.
Stationary Pre-Set Speed Control (12VXU)
1. To activate this feature, press the ON position on the left
side CRUISE/THROTTLE - ON/OFF switch.
2. When ordered, this feature can provide two different
predetermined speeds, which are selected with the
SET/CRUISE or RESUME/ACCEL positions. You need
to know which position to use for your specific operation.
Press the right side SET/CRUISE or RESUME/ACCEL
switch for the desired pre-set speed.
3. First, press the switch that selects one of the desired
speeds.
4. To select the other speed, press the other switch. The
engine will immediately return to idle.
5. You must push the switch a second time to go to the
second speed. This is done to protect equipment from
being inadvertently operated at the wrong speed.
Mobile Variable Speed Control (12VXV)
Operates the same as cruise control, except the engine speed is
accurately controlled instead of vehicle speed. The truck could
be operated in one of several gears but the truck is limited to
a maximum of 20 MPH, or any pre-set lower speed down to 3
MPH.
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