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| Do not use tyre levers in the zone -a-. |
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| Set the taper head as near to the valve as possible so that the positioning of the lever about 30° -b- next to the valve is possible. |
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| Begin rotating the wheel until the bead has been completely released on the opposite side of the valve. |
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| Lift the tyre and repeat the operation on the opposite bead. |
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