Lincoln Electric IM10150 VIKING 1740 SERIES AUTO-DARKENING HELMETS - Manual (Page 6)

OPERATING INSTRUCTIONS
Headgear Adjustment
HEAD SIZE ADJUSTMENT: HEADGEAR TIGHTNESS is adjusted by push-
ing in the Ratchet Knob and turning to adjust for the desired head size. This
knob is located at the back of the helmet. HEADGEAR CROWN ADJUST-
MENT is made by adjusting for comfort and snapping the pin into the hole to
lock securely in place.
TILT: Tilt adjustment is located on right side of helmet. Loosen the right
headgear tension knob and push the top end of the adjustment lever outward
until the leverʼs Stop Tab clears the notches. Then rotate the lever up or
down to the desired tilt position. The Stop will automatically engage again
when released locking the helmet into position.
FORE / AFT ADJUSTMENT: Adjusts the distance between the userʼs face
and lens. To adjust, loosen the outside tension knobs and slide forward or
back to desired position and retighten. NOTE: Make sure both sides are
equally positioned for proper operation.
4
Crown
Adjustment
Ratchet
Knob
Fore-Aft
Adjustment
Tilt
Adjustment
LCD Viewing Area
Cartridge size
UV/IR Protection
Arc Sensors
Light State Shade
Variable Welding Shades
Grind Mode
Shade Control
Power Supply
Low Battery Warning
Battery
Power On/Off
Light to Dark Switching Time
Sensitivity Control
Delay Control (Dark to Light)
TIG Rating
Operating Temperature
Storage Temperature
Total Weight
Compliance (1)
Optical Class