Motorsport Scooters has this
Official Piaggio Workshop manual for the LX. Includes Specifications, Special tool chart, Maintenance, Trouble Shooting, Vehicle overhaul, Electrical, Engine, Suspension, Braking Systems, Bodywork and more. All you need to help you take better care of your investment. Bound copy for the LX 150
http://www.scooterwest.com/item_detail/Workshop-manual-LX150/412/