Vehicle Segment:
Urban commuter scooter, lightweight sports-oriented.
Competitors:
Competed against other 50cc scooters from brands like Aprilia, Yamaha (Aerox 50), Gilera, Piaggio.
Design Philosophy:
Aimed at younger riders and those seeking a sporty aesthetic and performance in the 50cc class, often featuring aggressive styling and advanced features for its segment.
Utility:
Essential tool for owners, mechanics, and parts suppliers to ensure correct part ordering and replacement, minimizing errors and downtime.
Coverage Description:
Comprehensive parts identification for the Derbi GP1 50 model year 2003.
Estimated Page Count:
Likely between 150-300 pages, typical for a comprehensive parts catalog of this era and vehicle type.
Language:
Likely English, with potential for diagrams and part numbers in multiple languages depending on origin.
Engine System:
Engine assembly, cylinder, piston, crankshaft, cooling system, lubrication system.
Fuel System:
Carburetor assembly, fuel tank, fuel lines, fuel filter.
Exhaust System:
Exhaust pipe, muffler, heat shields.
Transmission System:
Automatic transmission (CVT) components, drive belts, pulleys, gear reduction.
Chassis Frame:
Frame components, subframes, body mounts.
Suspension System:
Front forks, rear shock absorber, linkages, bearings.
Braking System:
Front and rear brake calipers, brake discs, brake pads, brake lines, master cylinders.
Steering System:
Handlebars, steering column, steering bearings.
Electrical System:
Wiring harness, battery, ignition system, lighting (headlight, taillight, turn signals), starter motor, instrument cluster components.
Cooling System:
Radiator, coolant hoses, fan (if applicable), thermostat.
Bodywork Panels:
Fairings, body panels, seat, storage compartments, mudguards.
Wheels Tires:
Wheel rims, tires, inner tubes, spokes, hub components.
Controls:
Throttle assembly, brake levers, switches, pedals (if applicable).
Identification Of Parts:
Primary function: enabling accurate identification of all replacement parts through detailed diagrams and part numbers.
Assembly Disassembly Sequences:
Illustrated guidance on component ordering and assembly for parts identification purposes.
Depth:
Detailed schematics and part numbers for component replacement, allowing for precise part sourcing.
Searchable Text:
Likely searchable text, enhancing ease of use for finding specific part numbers.
Printability:
Printable pages, allowing users to create hard copies for workshop use.
Binding:
Not applicable for PDF format; however, printable pages allow for user-chosen binding.
Paper Recommendation:
Standard printer paper, with heavier stock recommended for workshop durability.
Engine Type:
2-stroke, single-cylinder
Bore X Stroke:
Approx. 39.5 mm x 40 mm (typical for this displacement)
Cooling System:
Liquid-cooled
Ignition System:
Electronic ignition (CDI)
Horsepower:
Approximately 4.0 - 5.0 HP (depending on specific tuning and regulations).
Torque:
Estimated around 3.5 - 4.5 Nm.
Fuel Delivery:
Carburetor (e.g., Dell'Orto PHVA 12)
Fuel Type:
Unleaded gasoline
Oil System:
Automatic oil injection system for 2-stroke oil.
Crash Test Information:
Not applicable for this vehicle type (scooter) as formal crash testing is not standard for this segment.
Braking System Type:
Disc brakes front and rear, or disc front/drum rear depending on variant.
Lighting:
Halogen headlight, LED taillight/brake light, turn signals.
Frame Construction:
Steel frame providing structural integrity.
Rearview Mirrors:
Dual rearview mirrors for situational awareness.
Instrument Cluster:
Analog speedometer, odometer, fuel gauge, indicator lights (turn signals, high beam, oil level).
ABS Availability:
ABS was not a standard or common option on 50cc scooters of this era.
Connectivity Features:
No modern connectivity features like Bluetooth or USB charging were standard.
Headlight Type:
Halogen headlight for illumination.
Oil Change Recommendation:
Automatic oil injection, reservoir requires regular topping up; check manual for specific mileage intervals.
Spark Plug Replacement:
Typically every 3,000-5,000 km or as per manufacturer recommendation.
Air Filter Cleaning Replacement:
Regular inspection, cleaning/replacement every 2,000-4,000 km.
Transmission Fluid Check:
Gear oil for the reduction gearbox requires periodic checks and replacement, typically every 5,000-10,000 km.
Engine Oil Type:
High-quality 2-stroke synthetic or semi-synthetic oil meeting JASO FD or ISO-L-EGD standards.
Coolant Type:
Ethylene glycol-based coolant for liquid-cooled engines.
Gearbox Oil Type:
SAE 80W-90 or similar API GL-4 gear oil.
Common Wear Items:
Drive belt wear, spark plug fouling, carburetor jetting issues, suspension wear, brake pad wear.
Electrical Gremlins:
Older wiring harnesses can develop issues, leading to intermittent electrical faults.
Carburetor Maintenance:
Requires periodic cleaning and adjustment due to small jet sizes and susceptibility to fuel contamination.
Derbi History:
Derbi is a Spanish manufacturer with a long history in motorcycle and scooter production, known for its sporty and performance-oriented small-displacement vehicles.
Gp1 Series:
The GP1 series represented Derbi's effort to create a more modern, sporty, and technologically advanced scooter, particularly in the competitive 50cc segment.
Manufacturing Location:
Primarily manufactured in Spain.
Production Period:
The GP1 50 model was produced in the early to mid-2000s.
