Lull 944E-42 Operation Manual - Manual (Page 134)

Section 8 - Additional Checks
8-2 31200354
5. Depress service brake pedal and lower boom below 40°.
6. Depress service brake pedal (5) and shift transmission into forward.
7. Raise the boom above 40°.
8. Stabil-Trak system locked mode will be activated and indicator (7) will illuminate.
9. Lower boom below 40°.
10. Engage park brake switch (3).
11. Release service brake pedal.
12. Raise the boom above 40°.
13. Stabil-Trak system locked mode will be activated and indicator (7) will illuminate.
14. Lower boom below 40°.