TM 9-2320-209-10-1 FRAME 6 NOTE Always level boring machine with engine operating at idle speed. Leveling adjustments are easier to make at idle speed. 1. To level boring machine: (a) Move derrick (1) so that leveling bubble (2) is near center. Refer to frames 3, 4, and 5. (b) Using ratchet wrench, turn-front-to-back leveling adjustment (3) and side-to-side leveling adjustment (4) to center leveling bubble (2). (c) When leveling bubble (2) is centered in circle pull out power leveler shifting handle (5). Set handle in neutral position. GO TO FRAME 7 4-320