The Conquer Under Desk Treadmill requires virtually no assembly beyond removing the item from its packaging and placing it where you'd like. It requires minimal routine maintenance.
Please see attached for the manual.
Please also note, this manual covers multiple models, and they 330-UDTM does not have lubrication holes in the motor cover. The best way to lube the belt would be with an aerosol spray lubricant or the included oil applied under the belt (taking care not to spray the top of the belt). For a good illustration of this, see the below video:
And here is a photo: