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This guild will be used on both the X and U belts.
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First, using a 2.5mm Hex Wrench loosen the 4 M3x8mm securing the X or U motor in place. DO NOT remove them, just loosen them enough to let the motor slide. (Bolts are circled in red)
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Next, using a 8mm wrench turn the hex head bolt (indicated in blue) to adjust belt tension.
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Turing to the left will tighten the belt
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Turning to the right will loosen the belt.
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You want both X and U belts to be similar tensions and can be plucked like a guitar string but so high that it makes a high pitch sound with plucked.
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You will know if it is to loose if during moves it looks like the belt bunches up on one of the sides of the pulley or idler looking like a wave.
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Once you have the belt to the proper tension secure the 4 bolts mounting the motor to the motor plate. (Red Arrow and Circles)
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