Dual Fuel System (If Equipped) - JLG 4394RT Operation And Safety Manual

9. Have an assistant check to verify that the axle did not
oscillate and remained locked (one wheel is off of the
ground).
10. Carefully drive the machine back off the block and
ramp.
11. Lower the machine platform; the lockout cylinder
should then release and allow wheel to rest on the
ground. It may be necessary to activate DRIVE to
release cylinders.
12. If the lockout cylinders do not function properly, have
qualified personnel correct the malfunction prior to
any further operation.

2.4 DUAL FUEL SYSTEM (IF EQUIPPED)

IT IS POSSIBLE TO SWITCH FROM ONE FUEL SOURCE TO THE OTHER WITHOUT
ALLOWING THE ENGINE TO STOP. EXTREME CARE MUST BE TAKEN AND THE
FOLLOWING INSTRUCTIONS MUST BE FOLLOWED.
Changing from Gasoline to LP Gas:
1. Start the engine from the ground control station.
2. Open the hand valve on the LP Gas supply tank by
turning counterclockwise.
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SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION AND INSPECTION
– JLG Lift –
3. While the engine is operating, place the LPG/GAS
SELECT switch at the platform control station to the LP
Gas position.
Changing from LP Gas to Gasoline:
1. With the engine operating on LP gas under a no load
condition, position the LPG/GAS SELECT switch at the
platform control station to the GAS SELECT position.
2. If the engine 'stumbles' because of a lack of gasoline,
place the switch to the LPG position until the engine
regains smoothness, then return the switch to the GAS
SELECT position. Repeat as necessary until the engine
runs smoothly on gasoline.
Close the hand valve on the LP gas supply tank by turning
clockwise.
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