2009 Derbi GPR 125 4-stroke & GPR 125 4-stroke R Workshop Manual
Shop manual for Derbi GPR 125 4-stroke and GPR 125 4-stroke R. Covers maintenance, engine, fuel, cooling, and chassis systems. Publication C4085-91017
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Sample pages from the 2009 Derbi GPR 125 4-stroke & GPR 125 4-stroke R Workshop Manual manual
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Debri Models Covered & Key Technical Specifications
Models: Derbi GPR 125 4-stroke, Derbi GPR 125 4-stroke R
Build Years: 2009
Serial Numbers: VTHRG1A1Axxxxxxxx
Technical Data:
- Engine displacement: 124.2 cm³
- Power output: 15 HP at 9,250 rpm
- Engine configuration: Single cylinder 4-stroke, 4 valves, DOHC
- Compression ratio: 12:1
- Transmission: Manual, 6 gears
- Fuel system: Keihin CVK Ø30 carburetor
- Cooling system: Liquid, 780 ml radiator capacity
- Fuel tank capacity: 14.5 liters
- Spark plug: NGK CR8 EB (gap 0.7–0.8 mm)
- Brake fluid: DOT 4
- Tyre sizes: 100/80x17 (front), 130/70x17 (rear)
Debri Manual Features & Content Preview
Technical Scope and Service Documentation for 2009 Derbi GPR 125 4-stroke
- Covers the 2009 Derbi GPR 125 4-stroke and GPR 125 4-stroke R variants, detailing engine, chassis, fuel, and electrical systems for this 125cc liquid-cooled platform
- Official Derbi publication © 2009 Nacional Motor, S.A.U.
- Contains 26 detailed tightening torque tables, 247 pages of assembly and disassembly data, and numerous engine component identification diagrams
- Accessible from your device as soon as the order is placed
- Indexed PDF search covers every chapter and appendix
- Document features 2009 model-specific fuel injection and emissions setup notes that differ from earlier 2-stroke generations
Component and System Overview
This 2009 Derbi GPR 125 4-stroke workshop manual contains exhaustive explanations for the maintenance, installation, and dismantling of major vehicle systems. The documentation covers the 124.2 cc DOHC engine architecture, including valve adjustment procedures using calibrated shims, crankshaft assembly, and lubrication circuit verification. It provides professional-level breakdowns for the Keihin CVK Ø30 carburetor, transmission gear ratios, and the 6-speed manual gearbox configuration.
Technical Reference and Specification Highlights
Specification Highlights
Engine compression values are listed at a standard of over 15 kg/cm², with a service limit of 13 kg/cm². The intake valve clearance is specified at 0.10–0.15 mm, while exhaust valves require 0.15–0.20 mm. Coolant capacity for the expansion chamber is documented at 230 ml. Fluid service specifications include 1.15 liters for a periodical oil change with filter, and SAE 10W-40 oil viscosity is recommended for the 4-stroke power unit. The charging system utilizes a three-phase magneto producing 13v–15v at 8,000 rpm. Detailed torque specifications are included for major components, such as the 12 Nm requirement for the spark plug and 35–40 Nm for the brake caliper bolts. This 247-page official publication is the complete factory reference for the 2009–2009 Derbi GPR 125 4-stroke, documenting comprehensive mechanical and electrical specifications for the 125cc liquid-cooled, 4-valve DOHC engine and chassis.
Document Reference: © 2009 DERBI - Nacional Motor, S.A.U.
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