JLG RT3394 Operation & Safety Manual page 41

Machine Controls, Indicators, and Operation
Engine Start Switch - A momentary contact, push button type switch that supplies electrical
power to the starter solenoid when the emergency stop switch is in the ON position and the
start button is depressed.
Glow Plug Switch (Diesel Engine Only) - A momentary contact, push button type switch
that supplies electrical power to the engine's glow plugs, to assist cold starting. Once pressed,
there is a 5 second default timer that will not allow the start button to function before this
time has elapsed.
Note: Diesel engine cannot be started while glow plugs are on.
Ground/Platform/OFF Key Selector Switch - A three position, key-operated power select
switch supplies operating power to the platform or ground controls, as selected. When
positioned to platform, the switch provides power to the emergency stop switch at the
platform controls. When positioned to ground, the switch provides power to the ground
control. The ground control emergency stop switch provides power to the key switch. With the
power select switch in the center off position, power is shut off to both platform and ground
controls and the key can be removed to disable the machine.
Head and Tail Lights - ON/OFF Switch (If Equipped) - This toggle switch turns the head
and tail lights on and off.
Hourmeter - The machine is equipped with an hour meter to indicate the number of hours
the machine has been operated.
Oil Pressure Indicator - Illuminates when the engine oil pressure drops too low.
Overload Indicator (LSS) - Illuminates when the platform becomes overloaded.
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RT3394, RT4394 31221544