Niche:
The BMW C1 125 represented a unique urban mobility solution, blending scooter-like convenience with enhanced safety features, targeting riders seeking an alternative to traditional scooters or motorcycles within city environments.
Competitors:
Competed against premium scooters and smaller displacement maxi-scooters from brands like Yamaha (e.g., Majesty series), Honda (e.g., PCX series), and Aprilia.
Vehicle Features:
Enclosed passenger cell with integrated roll cage, seatbelt system, optional airbag, and a car-like driving position for enhanced rider safety and comfort.
Systems Covered:
Engine, Fuel System, Ignition System, Cooling System, Exhaust System, Transmission, Clutch, Brakes, Suspension, Steering, Electrical System, Bodywork, Frame, Wheels, Tires, Instruments, Controls, Maintenance, Troubleshooting, Diagnostics, Repair Procedures, Specifications
Estimated Pages:
Extensive (typical for a comprehensive workshop manual, specific page count not provided in product info)
Manual Type:
Workshop Service Repair Manual
Language:
English (assumed based on typical product descriptions for this market)
Engine:
Detailed coverage of the 125cc 4-stroke engine, including disassembly, assembly, component specifications, and troubleshooting.
Fuel System:
Carburetor adjustment, fuel pump operation, fuel filter replacement, and fuel line routing.
Ignition System:
Spark plug specifications, ignition timing, CDI unit testing, and troubleshooting.
Cooling System:
Coolant type, capacity, and bleeding procedures. Radiator and fan assembly inspection.
Exhaust System:
Exhaust pipe and muffler inspection, gasket replacement, and noise level specifications.
Transmission:
Automatic transmission (CVT) operation, belt inspection and replacement, variator and clutch assembly.
Brakes:
Hydraulic brake system, disc brake pad replacement, brake fluid type and bleeding, caliper overhaul.
Suspension:
Front fork (telescopic) disassembly, oil change, seal replacement. Rear shock absorber inspection and replacement.
Steering:
Handlebar assembly, steering bearing adjustment and replacement.
Electrical System:
Wiring diagrams, battery maintenance, lighting system, starter system, charging system (alternator/stator), fuses, and relays.
Bodywork Frame:
Panel removal and installation, frame inspection, seat and storage compartment access.
Maintenance:
Routine checks, lubrication points, fluid changes, filter replacements, spark plug replacement, brake pad wear checks.
Troubleshooting:
Diagnostic guides for common starting issues, running problems, electrical faults, and braking concerns.
Repair:
Step-by-step instructions for component disassembly, repair, and reassembly.
Diagnostics:
Methods for identifying the root cause of mechanical and electrical malfunctions.
Depth:
Comprehensive, covering everything from basic owner maintenance to in-depth mechanical and electrical repairs, suitable for professional technicians and experienced DIY mechanics.
Engine Type:
Single-cylinder, four-stroke
Displacement:
124.6 cc (approx.)
Bore X Stroke:
Information typically found within the manual
Cooling System:
Liquid-cooled
Valve Train:
SOHC, 2 valves per cylinder (typical for this class)
Horsepower:
Approx. 15 HP (at 7,500 rpm) - Specific figures in manual
Torque:
Approx. 15 Nm (at 5,500 rpm) - Specific figures in manual
Fuel Delivery:
Carburetor (e.g., Keihin CVK) - Specific model and size in manual
Fuel Type:
Unleaded gasoline (RON 91 or higher recommended)
Length:
Information typically found within the manual
Width:
Information typically found within the manual
Height:
Information typically found within the manual
Dry Weight:
Approx. 170 kg (depending on equipment) - Specific figures in manual
Gross Vehicle Weight Rating:
Information typically found within the manual
Crash Safety:
Designed with a significantly higher safety profile than standard scooters due to its enclosed structure, roll cage, and automotive-style safety belt.
Braking System:
Front and rear disc brakes. ABS was an optional feature on some models.
Occupant Protection:
Enclosed passenger cell, integral roll cage, three-point seatbelt, crumple zones, optional airbag system.
Audio System:
Optional integrated audio system with speakers available on some models.
ABS:
Anti-lock Braking System (ABS) was an optional feature, significantly enhancing safety.
Instrument Cluster:
Digital and analog displays for speed, RPM, fuel level, coolant temperature, and warning lights.
Oil Change Interval:
Typically every 6,000 km or 12 months - specific recommendation in manual.
Air Filter Replacement:
Every 12,000 km or 24 months - specific recommendation in manual.
Spark Plug Replacement:
Every 12,000 km - specific recommendation in manual.
Brake Fluid Change:
Every 2 years, regardless of mileage - specific recommendation in manual.
Engine Oil Type:
SAE 10W-40, API SG or higher, JASO MA - Specific BMW recommended oil in manual.
Engine Oil Capacity:
Approx. 1.5 liters (with filter change) - Specific figure in manual.
Coolant Type:
Ethylene glycol-based coolant with corrosion inhibitors (BMW recommends specific coolant) - Ratio and type in manual.
Brake Fluid Type:
DOT 4 - Specific recommendation in manual.
Common Wear Items:
CVT belt wear, suspension bushings, brake pad wear, electrical connection corrosion over time.
Potential Failures:
Starter motor brushes, voltage regulator, fuel pump reliability can be issues if not maintained.
Bmw Motorcycles:
BMW has a long history of producing innovative and premium motorcycles, known for their engineering quality and performance.
C1 Development:
The C1 was a radical departure, aiming to create a safer, more comfortable, and weather-protected urban scooter. It was a bold experiment in personal mobility.
Manufacturing Locations:
Primarily manufactured in Germany.
Sales Performance:
While innovative, sales were moderate, reflecting a niche market acceptance due to its unique design and higher price point compared to conventional scooters.
