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Editing Step 5 —

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The pulley is fitted with the collar and grub screw facing towards the motor. This provides correct alignment with the idler at the top of each tower.

The motor shaft has a flat side - align the flat side with the first grub screw. This firmly couples the pulley to the motor shaft. Then secure the second grub screw. The shaft should not be sticking out more than 1mm from the pulley. Tighten firmly (but do not over-tighten) with the supplied 1.5mm hex key.

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