Segment:
Lightweight sport motorcycle / Naked bike
Key Competitors:
Yamaha TZR series (smaller displacement), Aprilia RS series, Ducati Monster (higher displacement), Honda CB series
Design Philosophy:
Performance-oriented Italian design, often with sporty chassis and engine characteristics for its class.
Target Audience:
Young riders, commuters seeking sporty performance, enthusiasts looking for character.
Engine Mechanical:
Full overhaul, troubleshooting, components
Engine Electrical:
Ignition, starting, charging, sensors, wiring diagrams
Fuel System:
Carburetor tuning, fuel pump, lines, tank
Transmission:
Gearbox disassembly, reassembly, ratios, lubrication
Clutch:
Operation, adjustment, replacement
Suspension:
Front forks, rear shock absorber, adjustments, servicing
Brakes:
Hydraulic systems, caliper service, pad replacement, bleeding
Cooling System:
Liquid-cooled engine specifics, radiator, thermostat, coolant
Exhaust System:
Component identification and replacement
Frame And Bodywork:
Chassis components, fairings, seat, handlebars
Electrical Components:
Lighting, instrumentation, wiring harness repair
Wheels And Tires:
Tire pressure, replacement, wheel bearing maintenance
Scheduled Maintenance:
Oil changes, filter replacements, chain adjustment, spark plugs
Troubleshooting Guides:
Diagnostic flowcharts for common issues
Disassembly Reassembly:
Step-by-step instructions for major components
Tune Up Procedures:
Carburetor synchronization, ignition timing (if applicable)
Wiring Diagrams:
Comprehensive schematics for electrical systems
Specification Tables:
Torque values, clearances, fluid capacities
Level Of Detail:
Factory-level diagnostics and repair procedures
Special Tools:
Identification and usage of manufacturer-specific tools
Engine Type:
Two-stroke, liquid-cooled
Displacement:
125 cc (common variant)
Cylinder Configuration:
Single-cylinder
Bore X Stroke:
56 mm x 50.6 mm (typical for 125cc)
Compression Ratio:
Approx. 7.0:1 - 8.5:1 (model dependent)
Horsepower:
Approx. 28-32 HP @ 9,000-10,000 RPM (125cc, often restricted for learner licenses)
Torque:
Approx. 17-19 Nm @ 8,000-9,000 RPM (125cc)
Carburetor Type:
Dell'Orto PHBH 28 or similar (e.g., Mikuni TMX)
Fuel Type:
Unleaded gasoline with 2-stroke oil pre-mix or separate oil injection system
Oil Mixture Ratio:
Typically 1:50 (gasoline:oil) if premixed
Oil Type:
API TC or JASO FD rated 2-stroke motorcycle oil
Crash Test Ratings:
N/A (Motorcycle safety is assessed differently than cars)
Braking System:
Front: Single disc brake, Rear: Single disc brake
ABS:
Not standard or commonly available for this model year.
Lighting System:
Halogen headlight, LED tail light (common)
Mirrors:
Standard handlebar-mounted mirrors
Engine Oil Change:
Every 3,000-5,000 km or annually, using recommended 2T oil if oil-injected. Check gearbox oil every 6,000-10,000 km.
Air Filter Cleaning:
Every 3,000-5,000 km
Spark Plug Replacement:
Every 6,000-10,000 km, check gap more frequently.
Chain Adjustment Lubrication:
Every 500-1,000 km
Engine Oil Type:
High-quality 2-stroke motorcycle oil (API TC / JASO FD)
Gearbox Oil Type:
SAE 10W-30 or 10W-40 API GL-4 or GL-5 transmission oil
Coolant Type:
Ethylene glycol-based coolant mixture (50/50 water/antifreeze)
Ignition Coil Failures:
Can be prone to failure over time, leading to weak or no spark.
Power Valve Sticking:
Carbon buildup can cause the exhaust power valve to stick, affecting performance.
Carburetor Tuning Sensitivity:
Two-stroke carburetors can be sensitive to altitude, temperature, and modifications, requiring periodic adjustment.
Electrical Connection Corrosion:
Age and exposure can lead to corrosion in wiring connectors, causing intermittent faults.
Rear Shock ABSorber Wear:
Original shock absorbers may lose damping over time, requiring rebuild or replacement.
Manufacturer Origin:
Cagiva is an Italian motorcycle manufacturer, known for its sporty and often exotic designs, particularly in the 80s and 90s.
Planet Development:
The Cagiva Planet was part of their strategy to offer lightweight, aggressive-looking naked bikes based on their successful 125cc two-stroke sportbike platforms (like the Mito).
Production Period:
Mid-1990s to early 2000s
Manufacturing Location:
Italy
