JLG T500J, Service And Maintenance Manual

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SECTION 3 - CHASSIS & TURNTABLE
3121200 3-65
3.16 ENGINE
NOTE: Refer to the engine manufacturer’s manual for detailed
operating and maintenance instructions.
Throttle & Choke Adjustment
1. Start the engine.
2. Hold the throttle open. Adjust the stop screw to 3600
rpm.
3. Release the throttle and set idle to 2000 rpm.
4. Set the choke control cable to 2.375" (6 cm) and tighten
the jam nuts.
Fuel Valve Lever
NOTE: The fuel valve is turned off upon delivery and must be
turned on prior to use. The fuel valve should be turned off
when machine is not being used.
The fuel valve lever must be in the ON position for the engine
to run. When the engine is not in use, leave the fuel valve lever
in the OFF position to prevent carburetor flooding and to
reduce the possibility of fuel leakage.
Checking RPM Level
1. Connect the JLG Analyzer to the ground control box.
Refer to Section 6.2, To Connect the JLG Control System
Analyzer.
2. Set the Analyzer to Access Level 2. Refer to Section 6.3,
Changing Access Level.
3. Use the right arrow key to scroll to DIAGNOSTICS.
4. Use the down arrow key to scroll to PLATFORM,
then the right arrow key to scroll over to ENGINE.
5. From ENGINE, use the down arrow key to scroll to
the SPEED display, which will display engine RPM as
shown below:
Choke Actuator
If a new carburetor is needed, the choke detent must be
removed from the new carburetor in order to make the choke
actuator function freely. Use the following procedure.
1. Remove the choke set from the carburetor by carefully
opening the slot in the choke shaft to remove the choke
plate and pull the shaft out the top.
2. Carefully file or grind the choke detent away.
3. Replace the choke shaft and choke plate.
A SET CABLE HEX TO 2.75" (7 CM) TO FACE OF SOLENOID THEN TIGHTEN
JAM NUT FOR THROTTLE
B SET CABLE HEX TO 2.375" (6 CM) TO FACE OF SOLENOID THEN TIGHTEN
JAM NUT FOR CHOKE
ESC ENTER
MAE19060
SPEED 2000

rPM