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Apply a light tension to the belt to remove any slack. Do not over-tighten the belt or adjustments will be impossible.

We will adjust the belt, to the correct tension, in a later step.

Adjust the position of y_idler_mount and y_motor_mount using their M5 screws. Try to have the belt riding centred as best as possible on the pulley (motor side) and the idler (tensioner side).

It is important to move the Y carriage back and forth along the whole axis between each adjustment.

Remember that when you tighten the y_idler_mount and y_motor_mount screws you must do so evenly, incrementally and in turn. If you don't do this you may cause those parts to be misaligned.

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