JLG 660SJ Operator Manual - Manual (Page 73)

SECTION 4 - MACHINE OPERATION
3121205 – JLG Lift – 4-15
4.14 DUAL FUEL SYSTEM (GAS ENGINE ONLY)
The dual fuel system enables the standard gasoline engine
to run on either gasoline or LP gas.
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 engine from Ground Control Station.
2. Open hand valve on LP gas supply tank by turning
counterclockwise.
3. While engine is operating on GASOLINE under a no-
load condition, place FUEL SELECT switch at Platform
Control to LP position.
Changing From LP Gas to Gasoline
1. With engine operating on LP under a no-load condition,
position FUEL SELECT switch at Platform Control Sta-
tion to GASOLINE position.
2. Close hand valve on LP gas supply tank by turning
clockwise.
4.15 HYDRAULIC TOOL CIRCUIT INSTRUCTIONS
Tool Circuit
Operate with engine running and foot switch released.
1. Be sure hydraulic switch is “OFF”. It is located on the left
side of platform below console box.