Komatsu PC308USLC-3E0 Operation & Maintenance Manual page 80

DETAILED CONTROLS AND GAUGES
Travel Speed Selector Switch (Selection Switch)
When loading or unloading from a trailer, always travel at low speed (with travel speed selector switch (3) at the Lo position).
Never operate travel speed selector switch (3) while loading or unloading.
If the travel speed is switched between Hi and Lo when the machine is traveling, the machine may deviate to one side, even
when traveling in a straight line.
Stop the machine before switching the travel speed.
Switch (3) is used to set the travel speed to 3 stages.
Lo lights up : Low-speed travel
Mi lights up : Medium-speed travel
Hi lights up : Hi-speed travel
When the engine is started, the speed is automatically set to Lo.
Each time that the switch is pressed, the display changes Lo
Mi Hi Lo in turn.
When traveling in high speed (Hi) or middle speed (Mi), if travel power is needed, such as when traveling on soft
ground or on slopes, the speed automatically switches to low speed (Lo), so there is no need to operate the switch.
The monitor display GG stays at Hi or Mi.
REMARK
Each time that the travel speed selector switch is operated, the
mode is displayed in the center of display portion (GG), and the
screen returns to standard screen (BB) after 2 seconds.
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WARNING
OPERATION