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The negative and positive signs on a butane lighter typically indicate the direction in which to turn the adjustment wheel to increase or decrease the flame size. The negative sign usually indicates turning the wheel counterclockwise to decrease the flame size, while the positive sign indicates turning it clockwise to increase the flame size. It is important to adjust the flame size carefully to ensure proper functioning and safety of the lighter.

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6mo ago

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Moving a screw or control towards the + increases the size of the flame, the - sign decreases the flame size.

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Wiki User

11y ago
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Q: What does the negative and positive sign mean on the butane lighters?
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