Route the timing belt through the x_carriage.

Continue to route the timing belt around the idler of the x_end_ilder_idler_mount and go back in the direction of the x_carriage.

To finish routing the timing belt, attach few belt teeth in the x_carriage.

The belt should have almost no tension, it will be adjusted later.

Estimate the length and cut the belt. Finish to insert it in the x_carriage

Verify that the belt is completely pressed into the slot and that it extends to the central portion.

Verify that no cable is pinched by the belt.