Shapeoko Y axis seem to be dragging

[WillAdams (William Adams (Carbide 3D))]

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Y axis is jerky when cutting

What sort of toolpath are you cutting? If your machine is mechanically sound (pulleys secure, belts well-tensioned, linear rails lubricated), check the wiring. You can verify the electronics by powering down, removing both Y-axis belts (label them so that you can swap them side-for-side and end-for-end), and putting a bit of tape on the pulleys. Then, power up and connect to the machine and try to initialize — the ma machine will home Z and X as normal, while the Y-axis should turn until it t…