This service manual describes service procedures and Wring Diagram for Scooter Model JL50QT-18, JL50QT-X1/8, JL50QT-14, BT50QT-9 and BT49QT-3 part Manual covers BT50 QT-9 Software Database Instant Download Complete FSM This Service / Repair Manual is a professional book in which you can get a better understanding of your bike.