The GPR 125 4-STROKE DERBY Service Repair Manual provides comprehensive instructions and repair information for maintaining, servicing, diagnosing, and repairing your motorcycle. This manual is an essential resource for both professional technicians and DIY enthusiasts. It covers a wide range of topics, including general information about the motorcycle, periodic maintenance schedules, tune-up procedures, engine components, fuel and lubrication systems, electrical systems, chassis, and detailed servicing information. With its step-by-step instructions and detailed diagrams, this manual empowers you to perform repairs and maintenance confidently, saving you time and money.