JLG 740AJ ANSI Operator Manual - Manual (Page 84)

SECTION 4 - MACHINE OPERATION
4-18 – JLG Lift – 3121650
Changing From Gasoline to LP Gas
1. Start engine from Ground Control
Console.
2. Open hand valve on LP gas supply tank by turning counter-
clockwise.
3. While the engine is operating, place the two position
LPG/Gasoline switch at the platform control station
to the "LP" position.
Changing From LP Gas to Gasoline
1. With engine operating on LP under a no-load con-
dition, position FUEL SELECT switch at Platform
Control Station to GASOLINE position.
2. Close hand valve on LP gas supply tank by turning
clockwise.
4.14 RE-SYNCHRONIZE UPRIGHT
Releveling Valve
A pull type control valve allows the operator to adjust the upright
level cylinder if the upright is not 90° (vertical) relative to the
chassis (Refer to Figure 2.9 and Figure 2.10). This valve is located
in the tank compartment area.
Perform the following steps with the aid of an assistant:
1. Turn the key switch to the ground control
position.
2. Start the engine.
3. Pull and hold the red relevel knob located next to
the main control valve. Refer to Figure 4-7.
4. Raise the tower boom 6 feet (1.8 m).
5. Release the red relevel knob.