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Tightening the X and Y-Axis Pulleys

    When to Tighten the Pulleys

    Loose X and Y-axis pulleys in your MakerBot Replicator 2X can result in belts slipping during printing. If you notice shifts on the X or Y-axis during a print, it might be time to tighten your pulleys.

    Tightening the X-Axis Pulley

    The X-axis pulley is attached to the motor mounted on the right side of the gantry. Slide the extruders to the left until you have access to the set screw holding the pulley to the motor shaft. Use the 1.5mm hex wrench from the Accessory Box to tighten the set screw. 

    Tightening the Y-Axis Pulley

    The Y-axis pulley is attached to the motor mounted in the back right corner of your MakerBot Replicator 2X. Slide the extruders to the front of your MakerBot Replicator 2X until you have access to the set screw holding the pulley to the motor shaft. Use the 1.5mm hex wrench from the Accessory Box to tighten the set screw.

    You may find the following video helpful. A MakerBot Replicator 2 is used in the video, but the process is similar for the MakerBot Replicator 2X:

    If you are still having issues with slanted prints, click here for other troubleshooting suggestions.


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