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Longjia Manuals & User Guides

User manuals, setup guides, troubleshooting help, and repair information for Longjia products.

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Longjia manuals

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Longjia LJ50QT-X Owners Manual: Operation, Maintenance, and Safety Guide

Owners manual

This comprehensive owners manual provides essential information for operating, maintaining, and ensuring the safety of your Longjia LJ50QT-X scooter. Discover details on controls, riding instructions, service procedures, technical specifications, and…

Longjia LJ125-9A Motorcycle Owner's Manual

Owner's Manual

Comprehensive owner's manual for the Longjia LJ125-9A fuel injection motorcycle, covering safety, parts description, operation, maintenance, specifications, and circuit diagrams.

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Longjia Motorcycle ECU (Engine Control Unit) Instruction Manual

Longjia 125, Longjia 150, Longjia 250, Longjia 300 • December 9, 2025

Comprehensive instruction manual for Longjia 125, 150, 250, and 300 series motorcycle Engine Control Units (ECU) with Delphi system. Includes setup, operation, maintenance, troubleshooting, and specifications.