🏷️ Basic Information Identification Make: BMW Model: C1 125 Model Variant: 125cc Scooter Applicable Model Years: 1999 onwards Codes Chassis Code: Not specified in product data, typically 'K' series for scooters Engine Code: Not specified in product data, likely a single-cylinder 4-stroke 👋 Introduction Market Position Positioning: The BMW C1 was a unique urban scooter offering a high level of safety and comfort for its class, akin to a small car for urban mobility. Competitive Analysis Competitors: Competed with other premium scooters and small-displacement motorcycles in the urban mobility segment, but its unique safety cage design set it apart. Key Features Unique Selling Points: Integrated safety cage, optional seatbelt, weather protection, car-like driving position. Manual Purpose Purpose: To provide owners and technicians with the necessary information to perform all maintenance, diagnostics, and repairs on the BMW C1 125. 📋 Manual Details Coverage Areas Coverage: Comprehensive service and repair for BMW C1 125cc scooters from 1999 onwards. Page Count Page Count: Not specified in product data, but described as 'highly detailed'. Manual Type Type: Service Repair Workshop Manual Language Language: English (presumed, standard for service manuals of this type) Format Format: Factory Type PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine disassembly, assembly, inspection, timing, valve adjustment, piston, rings, crankshaft, connecting rod. Engine Management: Fuel injection system, ignition system, sensors, ECU diagnostics, emission control systems. Cooling System: Radiator, coolant, water pump, thermostat, hoses, fan. Fuel System: Fuel tank, fuel pump, fuel filter, fuel lines, fuel injector cleaning/replacement. Exhaust System: Exhaust manifold, muffler, catalytic converter, lambda sensors. Transmission: Automatic transmission (CVT), belt replacement, clutch inspection, variator service. Brakes: Hydraulic brake system, brake fluid, master cylinders, calipers, brake pads, brake discs, ABS (if equipped). Suspension: Front forks, rear shock absorber, linkage, bearings, seal replacement. Steering: Handlebar assembly, steering stem, bearings, adjustments. Electrical System: Battery, charging system (alternator/stator, regulator/rectifier), starter motor, lighting, horn, wiring diagrams. Bodywork And Frame: Panel removal and installation, seat, fairings, chassis inspection, structural repairs. Wheels And Tires: Tire replacement, wheel balancing, bearing maintenance, rim inspection. Procedures Included Preventative Maintenance: Oil changes, filter replacements, spark plug service, chain/belt adjustments, brake checks. Troubleshooting: Diagnostic procedures for common problems, fault code interpretation (if applicable). Repair Procedures: Step-by-step instructions for all major mechanical and electrical repairs. Rebuilding: Engine and transmission rebuilding procedures. Diagnostic Charts: Flowcharts for diagnosing specific issues. Wiring Diagrams: Detailed electrical schematics for all systems. Technical Depth Depth: Comprehensive, covering everything from basic fluid checks to complete engine overhauls and advanced electrical diagnostics. 📊 Manual Specifications File Format Format: PDF (Portable Document Format) Searchable: Likely searchable text within the PDF (standard for factory manuals). Print Quality Quality: Factory type, implies high resolution for clear diagrams and text. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Type: Four-stroke single-cylinder engine. Displacement: 125 cc (Cubic Centimeters). Bore X Stroke: Not specified in product data, typically around 52mm x 50mm for 125cc BMW engines of this era. Compression Ratio: Not specified in product data. Cooling System: Liquid-cooled. Performance Horsepower: Approximately 15 HP (Horsepower) at around 7500 RPM (typical for this class). Torque: Approximately 12 Nm (Newton-meters) at around 6000 RPM (typical for this class). Fuel System Induction: Electronic Fuel Injection (EFI). Fuel Type: Unleaded gasoline (Petrol), minimum Octane rating typically 95 RON. Fuel Tank Capacity: Approximately 9-10 Liters. 🔧 Transmission Standard Type: Automatic Continuously Variable Transmission (CVT). Optional Optional Transmission: N/A (CVT was standard). Features Drive Type: Belt drive to rear wheel. Fluid Type: Specific CVT transmission fluid (e.g., SAE 75W-90 or similar, refer to manual for exact specification). 📐 Dimensions Exterior Length: Approx. 2000 mm. Width: Approx. 700 mm (excluding mirrors). Height: Approx. 1300 mm (to top of windshield/cage). Weights Dry Weight: Approx. 160-180 kg (depending on equipment). Gross Vehicle Weight Rating: Not specified in product data, typically around 300-320 kg. 🛡️ Safety Features Ratings Crash Protection: Designed with a safety cell (roll cage structure) providing superior protection compared to conventional scooters. Mentioned optional seatbelt. Active Features Braking System: Front and rear disc brakes. Optional ABS (Anti-lock Braking System) was available on some models. Passive Features Occupant Protection: Integrated safety cage, deformable front section, potential for airbag deployment on certain configurations. Lighting: Headlight, taillight, brake lights, turn signals. 💡 Technology Features Infotainment Features: Basic instrumentation: speedometer, tachometer, fuel gauge, temperature gauge. No advanced infotainment systems were typically fitted. Driver Assistance ABS: Optional ABS system available on some models, a significant technological feature for scooters of that era. Connectivity Features: N/A (No modern connectivity features like Bluetooth or app integration). 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 - 10,000 km or annually (refer to specific manual for exact interval and conditions). Spark Plug Replacement: Typically every 10,000 - 15,000 km. Belt Replacement: Recommended every 20,000 - 30,000 km, inspection at...