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Orient two upper and one lower LMU8 bearings each with a bearing row up. (You cannot see row positions inside the bearings now, but we marked the row locations during x-axis assembly.)

Get your screws and driver ready now. You will only have one hand during next step.

2 of M3 x 12 mm (top row of screws)

3 of M3 x 18 mm (bottom row of screws)

Align x-carriage (with attached extruder) onto all three bearings. Hold in position while securing top x-carriage top cover.

Gradually and evenly tighten screws while checking that you are not causing any binding.

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