Vehicle Segment:
Lightweight, performance-oriented 125cc sportbike derivative, aimed at younger riders or those seeking agile urban transport with a sporty character.
Competitors:
Competed against other 125cc two-stroke sportbikes of the era, such as Aprilia RS125, Yamaha TZR125, Honda NSR125, Suzuki RG125, and Kawasaki KR1-S.
Performance Focus:
Designed for sporty riding with capable handling and a lively 125cc two-stroke engine.
Styling:
Often featured aggressive, modern sportbike styling, inheriting design cues from larger Cagiva models.
Target Audience:
Enthusiasts, owners, and independent mechanics looking to maintain or repair their Cagiva Super City 125.
Engine System:
Complete engine overhaul, disassembly, assembly, tuning, lubrication, cooling system, fuel system (carburetor details), exhaust system.
Transmission Drivetrain:
Gearbox disassembly and assembly, clutch operation and adjustment, chain drive maintenance, lubrication.
Chassis Frame:
Frame inspection, welding points, alignment checks, mounting points for components.
Suspension Steering:
Front fork disassembly and servicing (including seals and oil), rear shock absorber replacement, steering head bearing maintenance, linkage lubrication.
Braking System:
Brake caliper service, master cylinder overhaul, bleeding procedures, pad and disc replacement, hydraulic system maintenance.
Electrical System:
Wiring diagrams, component testing (lights, horn, ignition system, starter, battery), charging system (alternator/stator), fuses, relays.
Fuel System:
Carburetor identification, jetting, float adjustment, fuel line inspection and replacement, petcock operation.
Cooling System:
Radiator inspection, coolant type and capacity, thermostat operation, water pump service (if applicable).
Exhaust System:
Muffler and pipe inspection, gasket replacement, exhaust port cleaning.
Bodywork Fittings:
Fairing removal and installation, seat, fuel tank, fenders, controls (levers, pedals).
General Maintenance:
Oil changes, filter replacement, chain adjustment and lubrication, spark plug replacement, air filter cleaning/replacement.
Troubleshooting:
Diagnostic flowcharts for common running issues, electrical faults, starting problems.
Engine Rebuild:
Piston removal/installation, cylinder honing, crankshaft and connecting rod inspection, valve clearance adjustment (if applicable for 2-stroke port timing).
Carburetor Tuning:
Idle speed adjustment, mixture screw settings, jetting recommendations for different altitudes/modifications.
Electrical Diagnostics:
Testing ignition coil resistance, stator output, regulator/rectifier function.
Wheel Tire Service:
Tire pressure, tire inspection, wheel bearing maintenance, spoke tensioning (if applicable for spoked wheels).
Depth Level:
Comprehensive mechanical and electrical repair procedures, suitable for intermediate to advanced home mechanics and professional technicians.
Diagnostic Information:
Detailed troubleshooting guides and symptom-based diagnostics.
Specification Data:
Includes torque values, clearances, fluid capacities, and electrical specifications.
File Format Type:
PDF (most likely digital reproduction)
Searchable Text:
Likely searchable if OCR processed, otherwise image-based PDF.
Print Quality:
Variable, depending on the original manual's condition and scanning quality. Typically clear and legible for technical diagrams and text.
Binding Type:
N/A (for digital format), but original would be perfect bound or saddle-stitched.
Paper Type:
N/A (for digital format), but original would be standard paper or glossy for photos.
Engine Type:
Two-stroke, single-cylinder
Displacement:
124.6 cc (approximately)
Bore X Stroke:
Typically 56 mm x 50.6 mm (based on related Mito engines)
Cooling System:
Liquid-cooled
Reed Valve Induction:
Yes, common for 2-stroke sportbikes of this era.
Horsepower Output:
Around 28-32 HP at the crankshaft (market dependent, often restricted for licensing laws).
Torque Output:
Approximately 20-22 Nm (Newton-meters).
Carburetor:
Single Dell'Orto PHBH 28 or similar, or possibly a 30mm carburetor.
Fuel Type:
Unleaded gasoline (RON 95 or higher recommended)
Oil Injection:
Automatic oil injection system (autolube).
Engine Oil Type:
High-quality 2-stroke synthetic or semi-synthetic engine oil (API TC or JASO FD rated).
Engine Oil Capacity:
N/A (2-stroke, oil mixed with fuel or in separate autolube tank)
Safety Ratings:
N/A (motorcycles typically not rated by organizations like NHTSA or Euro NCAP).
Braking System:
Front disc brake (single or dual depending on spec), Rear disc brake.
Tires:
Sport-oriented bias-ply or radial tires, with recommended pressures detailed in the manual.
Lighting:
Headlight, taillight, brake lights, turn signals.
Frame Construction:
Steel perimeter or twin-spar frame, designed for rigidity and handling.
Engine Oil Change:
Every 3,000-5,000 km or annually, whichever comes first (for autolube oil).
Spark Plug Check Replace:
Every 3,000-6,000 km, depending on plug type and condition.
Air Filter Cleaning:
Every 3,000-5,000 km, or as needed in dusty conditions.
Chain Lubrication Adjustment:
Every 500-1,000 km, or after riding in wet conditions.
Fork Oil Change:
Every 10,000-15,000 km, or if performance degrades.
Fork Oil Type:
Typically SAE 5W or 7.5W fork oil (specific viscosity in manual).
Coolant Type:
Ethylene glycol based coolant, mix 50/50 with distilled water.
Brake Fluid Type:
DOT 4 brake fluid.
2 Stroke Engine Wear:
Piston and cylinder wear can be accelerated if not properly maintained or if run lean. Carburetor jetting critical.
Electrical Gremlins:
Age-related degradation of wiring connectors and grounds can cause intermittent issues. Stator failures can occur.
Clutch Slippage:
Can occur with hard use or worn clutch plates/springs.
Carburetor Cleaning:
Frequent cleaning and adjustment may be necessary due to fuel quality or lack of use.
