Target Audience:
Owners and technicians seeking in-depth knowledge for maintenance and repair of this performance-oriented 125cc scooter.
Market Position:
Popular performance-oriented scooter in the 125cc class, known for sporty handling and distinctive aggressive design.
Main Competitors:
Aprilia SR 125/150, Yamaha Aerox 100 and Jog RR, Honda Dio and NSR 125 variants.
Key Advantage:
Aggressive styling and sporty chassis set it apart from rivals in its era.
Manual Key Features:
Comprehensive factory-level repair information, detailed diagrams and photos, step-by-step instructions, permanent access without expiry, multi-device compatibility.
Coverage Areas:
All repairs, servicing, troubleshooting, diagnostics, electrical systems, engine, transmission, chassis, bodywork, suspension, brakes, fuel system, cooling system, lubrication system, emission control systems, torque specifications, wiring diagrams, exploded views, component identification.
Page Count:
Hundreds of pages (exact count not specified, but described as extensive)
Manual Type:
Factory Service Repair Workshop Manual
Delivery Method:
Instant digital download
Multi Device Usage:
Yes, usable on as many computers as required.
Licensing Terms:
Full manual, no trial, no expiry, lifetime usage.
Operating Systems:
Fully compatible with all Windows and MAC computers.
Engine:
Internal components, timing, sealing
Fuel System:
Carburetor, fuel lines, fuel pump
Ignition System:
Complete ignition coverage
Exhaust System:
Exhaust removal, inspection, servicing
Cooling System:
Liquid cooling system service and repair
Lubrication System:
2-stroke lubrication system servicing
Transmission:
Variator, clutch, gearbox
Electrical System:
Wiring diagrams, starter, lighting, charging
Brakes:
Hydraulic system, pads, discs
Suspension:
Front forks and rear shock absorber
Steering:
Steering column and bearings
Chassis:
Frame and structural components
Body Panels:
Removal, refitting, alignment
Wheels and Tires:
Wheel service and tire information
Maintenance Procedures:
Routine maintenance, scheduled servicing, oil changes, filter replacement, spark plug replacement
Repair Procedures:
Major and minor repairs, component removal and installation, overhaul procedures, complete engine rebuilds
Adjustment Procedures:
Carburetor adjustment, engine tuning, brake bleeding, suspension adjustments, clutch adjustment, variator service
Reference Data:
Torque value specifications, exploded diagrams for assembly and disassembly
Depth Level:
Comprehensive and detailed, suitable for professional mechanics and experienced DIY technicians, from basic fluid checks to complete engine rebuilds and complex electrical troubleshooting.
Troubleshooting Coverage:
Extensive guides for engine performance, starting problems, electrical faults, braking issues, and handling anomalies.
Wiring Diagrams Coverage:
Detailed wiring diagrams for all circuits including lighting, ignition, starter, charging, and instrumentation.
Exploded Diagrams Coverage:
Hundreds of highly detailed exploded diagrams showing component relationships and order of assembly/disassembly for all major systems.
Parts Identification:
Component identification and exploded views for correct part ordering and assembly.
Specific Part Numbers:
N/A - refer to manual for specific Gilera part numbers.
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Type:
2-stroke, single-cylinder, liquid-cooled
Displacement:
124 cc (125cc class designation)
Bore X Stroke:
Refer to manual for exact specifications (typically around 52-54mm bore, 58-60mm stroke for this class)
Cooling System:
Liquid-cooled
Horsepower:
Typically in the range of 10-15 HP for this era and class; refer to manual for specific output.
Torque:
N/A - refer to manual for specific output.
Fuel System:
Carburetor (specific model and size detailed in manual, e.g., Dell'Orto PHBG 19/21mm)
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
Refer to manual for exact capacity (typically 7-9 liters)
Lubrication Type:
Premix or oil injection (specific system detailed in manual)
Wheelbase:
Refer to manual for exact wheelbase. Typically around 1300-1350 mm.
Overall Length:
Refer to manual for exact dimensions. Typically around 1800-1900 mm.
Overall Width:
Refer to manual for exact dimensions. Typically around 700-750 mm.
Seat Height:
Refer to manual for exact height. Typically around 780-800 mm.
Dry Weight:
Refer to manual for exact weight. Typically around 110-120 kg.
Gross Vehicle Weight Rating:
Refer to manual for GVWR.
Service Intervals:
Refer to manual for detailed schedule.
1000 km Service:
Oil change, check drive belt, brake pads
5000 km Service:
Air filter, spark plug, gearbox oil
10000 km Service:
Variator rollers, clutch, carburetor cleaning, coolant check
Engine Oil Type:
Refer to manual. Typically high-quality 2-stroke oil meeting API TC or JASO FD/FC standards, or a specific Gilera recommendation.
Coolant Type:
Refer to manual. Typically a permanent type antifreeze/coolant mixture suitable for aluminum engines.
Gearbox Oil:
Refer to manual for type and viscosity (e.g., SAE 80W/90 GL-3 or GL-4).
Brake Fluid Type:
Typically DOT 4; refer to manual for confirmation.
Common Wear Items:
Variator rollers, clutch wear, exhaust pipe carbon buildup.
Known Issues:
Carburetor jetting sensitivity to fuel quality or altitude, aging electrical connectors. Manual addresses these through maintenance and troubleshooting.
Spark Plug Type:
Refer to manual for recommended type and gap (e.g., NGK BR9ES).
Filter Part Numbers:
Refer to manual for specific Gilera part numbers for air filter and related filters.
Brand Heritage:
Italian manufacturer with a long history in motorcycling, established in 1909. Known for sporty, performance-oriented models including scooters and racing motorcycles.
Model Evolution:
The Runner series, introduced in the mid-1990s, became iconic for its sporty design and handling. The FX125 was a key model, offering a step up in performance from smaller displacement scooters while retaining a compact, agile package. It underwent minor updates throughout its production run.
Production Period:
1998-2001 (as covered by this manual)
Manufacturing Location:
Italy (typical for Gilera)
