JLG 660SJ Operator Manual - Manual (Page 40)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-4 – JLG Lift – 3121205
6. Lift Control
Provides raising and lowering of the main boom.
7. Hourmeter
Registers the amount of time the machine has been in
use, with engine running. By connecting into the oil
pressure circuit of the engine, only engine run hours are
recorded. The hourmeter registers up to 9,999.9 hours
and cannot be reset.
8. Platform/Ground Select
A three position, key operated switch supplies power to
the platform control console when positioned to PLAT-
FORM. With the switch in GROUND position, power is
shut off to the platform control console, and only the
controls on the ground control panel are operable.
NOTE: With the Platform/Ground Select Switch in the center posi-
tion, power is shut off to controls at both operating sta-
tions.
NOTE: Lift, Swing, Platform Level, Telescope, Platform Rotator
and Auxiliary control switches are spring-loaded and will
automatically return to neutral (off) when released.
WHEN OPERATING THE BOOM ENSURE THERE ARE NO PERSONNEL
AROUND OR UNDER PLATFORM.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CON-
TROL LEVERS OR TOGGLE SWITCHES CONTROLLING PLATFORM
MOVEMENT DO NOT RETURN TO THE OFF POSITION WHEN RELEASED.
9. Swing Control
Provides 360 degrees continuous turntable rotation.
10. Telescope Control
Provides extension and retraction of the boom, when
positioned to IN or OUT.