JLG 1850SJ Service And Maintenance Manual page 506

SECTION 6 - JLG CONTROL SYSTEM
2. Plug the analyzer into the connector inside the Ground
control box.
3. Pull out the Emergency Stop switch and start the
engine.
4. The analyzer screen should read:
6-74
5. Use the arrow button to reach OPERATOR ACCESS. Hit
Enter.
6. Enter the Access Code, 33271.
7. Go to the CALIBRATIONS menu and hit ENTER.
8. Go to the JIB LVL UP CRKPT Screen. Hit ENTER.
9. CALIBRATE? prompt should appear. Hit ENTER again.
10. You will hear engine go to 1800 rpm.
11. Using UP ARROW, increase the value until you see the jib
level movement.
12. Hit ENTER again. CAL. COMPLETE message should
appear
13. Engine should again return to idle.
14. Hit ESC should return to JIB LVL UP CRKPT screen.
15. Hit RIGHT ARROW to get to the JIB LVL DN CRKPT screen.
Hit ENTER.
16. CALIBRATE? prompt should appear. Hit ENTER again.
17. You will hear engine go to 1800 rpm.
Using UP ARROW, increase the value until you see the jib level
down movement.
Hit ENTER again. CAL. COMPLETE message should appear
Engine should again return to idle.
Hit ESC to exit.
Cycle power to the machine.
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