Segment:
Premium urban mobility scooter.
Target Audience:
Commuters seeking a stylish, safe, and practical urban transport solution.
Competitors:
Yamaha Majesty, Suzuki Burgman, Honda Forza (though C1 had a unique safety proposition).
Unique Selling Proposition:
Integrated safety cage and seatbelt system, offering unprecedented rider protection in a scooter.
Design Philosophy:
Motorcycle-like stability and rider safety combined with scooter convenience.
Years Covered:
2000, 2001, 2002, 2003
Regional Coverage:
Global (primarily European market focus)
Estimated Page Count:
300-400 pages (typical for comprehensive factory service manuals)
Type:
Factory Service Repair Manual
Language:
English (likely with German and other European languages available depending on source)
Format:
Digital (PDF) - Searchable, printable
Engine Mechanical:
Full disassembly, assembly, inspection, and repair of the 125cc engine.
Fuel System:
Carburetor adjustment and overhaul, fuel pump, fuel lines, and tank.
Ignition System:
Ignition coil, spark plug, CDI unit, wiring.
Cooling System:
Radiator, fan, thermostat, coolant circulation, coolant specifications.
Transmission Drivetrain:
Automatic transmission (CVT), clutch assembly, drive belt inspection and replacement.
Brakes:
Front and rear brake systems (hydraulic disc brakes), brake pad replacement, caliper service, brake fluid specifications and bleeding procedures.
Suspension:
Front telescopic forks (including oil change and seal replacement), rear shock absorber, swingarm inspection.
Steering:
Handlebar assembly, steering head bearings (inspection and adjustment).
Electrical System:
Battery, starter motor, alternator, lighting system (headlight, taillight, indicators), horn, wiring diagrams.
Bodywork Chassis:
Frame inspection, body panel removal and installation, seat, fairings, roll cage structure.
Wheels Tires:
Wheel bearing inspection, tire pressure recommendations, tire replacement.
Preventative Maintenance:
Scheduled maintenance tasks, lubrication points, fluid changes.
Troubleshooting:
Diagnostic procedures for common and uncommon faults, symptom-based troubleshooting charts.
Repair Procedures:
Step-by-step instructions for component replacement and repair.
Engine Overhaul:
Detailed procedures for engine disassembly, rebuilding, and reassembly.
Electrical Diagnostics:
Wiring diagrams, troubleshooting electrical circuits, component testing.
Chassis Inspections:
Inspection of frame integrity, steering head, and suspension components.
Torque Specifications:
Crucial torque values for all fasteners to ensure proper assembly and safety.
Depth:
Comprehensive factory-level repair and maintenance procedures.
Diagnostics:
Advanced diagnostic techniques, including electrical system fault finding.
Rebuilds:
Full engine and transmission rebuild instructions.
Engine Type:
Four-stroke, single-cylinder, liquid-cooled
Displacement:
125 cc (approximately)
Bore X Stroke:
Specific dimensions would be detailed in the manual.
Power Output:
Around 15 PS (approx. 11 kW) at peak RPM (exact figures in manual).
Torque Output:
Specific torque figures and delivery curve available in the manual.
Top Speed:
Approximately 100-110 km/h (62-68 mph), depending on rider and conditions.
Fuel Delivery:
Carburetor (likely a Keihin or Mikuni unit)
Fuel Type:
Unleaded Gasoline (RON 95 recommended)
Fuel Tank Capacity:
Approximately 9-10 liters.
Crash Test Data:
The C1 was designed with enhanced safety features beyond typical scooters, incorporating crashworthiness concepts.
Braking System:
Standard ABS (Anti-lock Braking System) on front and rear wheels for enhanced control.
Tire Grip:
Wide tires contributing to stability.
Occupant Protection:
Integrated safety cell/cage providing a protective structure around the rider.
Restraint System:
Three-point seatbelt as standard equipment.
Windscreen:
Large, integrated windscreen for rider protection from elements.
Oil Change Engine:
Every 6,000 km or 12 months, whichever comes first.
Air Filter Replacement:
Inspect every 6,000 km, replace as needed. Detailed interval in manual.
Spark Plug Replacement:
Replace every 12,000 km or as per inspection.
Drive Belt Inspection:
Inspect every 12,000 km, replace based on wear.
Valve Clearance Check:
Every 12,000 km or as specified for optimum performance.
Engine Oil Type:
SAE 10W-40, API SG/SH or higher.
Engine Oil Capacity:
Approx. 1.3 liters (with filter change).
Coolant Type:
BMW recommended coolant or equivalent (ethylene glycol based, 50% concentration).
Fork Oil Type:
SAE 7.5W or as specified in manual.
Common Wear Items:
Drive belt, brake pads, suspension bushings due to urban usage.
Electrical Connections:
Corrosion on electrical connectors due to weather exposure (requires careful inspection).
Cooling System Leaks:
Potential for minor leaks at hose connections if not properly maintained.
