Oshkosh Corporation JLG H800AJ, Operation And Safety Manual

Page: 87 / 164

SECTION 4 - MACHINE OPERATION
3121769 – JLG Lift –
4-15
Raising and Lowering the Main Boom
To raise or lower the Main Boom, position the Main
Boom Lift switch to Up or Down until the desired
height is reached.
Telescoping the Main Boom
To extend or retract the main boom, use the Main
Telescope Control Switch to select In or Out move
-
ment.
4.7 SHUT DOWN AND PARK
1.
Drive machine to a protected area.
2. Assure boom is fully retracted and lowered over rear (Drive)
axle; all access panels and doors closed and secured.
3. Remove all load and allow engine to operate 3-5 minutes at
idle to permit reduction of engine internal temperatures.
4. At Ground Controls, turn Key Select switch to (center) Off
Position, Power/Emergency Stop switch (down) to Off.
Remove key.
5.
Cover Platform Control console to protect instruction plac -
ards, warning decals and operating controls from hostile
environment.