Market Segment:
High-performance lightweight sportbike, popular in entry-level sportbike and track day segments. Known for its aggressive styling and nimble handling.
Key Competitors 2002:
Yamaha YZF-R125 (later models), Honda CBR125R, Suzuki GSX-R125 (later models), Kawasaki Ninja ZX-12R (larger displacement but similar styling appeal).
Design Philosophy:
Emphasizes aerodynamic fairing, sporty ergonomics, and a powerful (for its class) 2-stroke engine, mirroring larger sportbike designs.
Engine Systems:
Fuel, Ignition, Cooling, Exhaust (including Catalytic Silencer), Lubrication (2-stroke oil tank).
Chassis Systems:
Frame, Suspension (Front & Rear), Wheels (Front & Rear), Drive Chain, Brakes (Disc Brakes, Front & Rear), Steering.
Electrical Systems:
Battery, Fuses, Lighting (Headlight, Direction Indicators, Rear Light), Ignition Switch, Switches.
Controls And Instruments:
Handlebar Controls (Left & Right), Ignition Switch, Steering Lock, Instruments and Indicators, Multifunction Computer.
Auxiliary Equipment:
Crash Helmet Hook, Glove/Tool Kit Compartment, Rear Mudguard Extension (where applicable).
Operational Procedures:
Safe Drive, Basic Safety Rules, Clothing Recommendations, Load Management, Starting, Departure and Drive, Running-in, Stopping, Parking, Theft Prevention Suggestions.
Maintenance Procedures:
Regular Service Intervals, Identification Data, Vehicle Support Stands (Rear & Front), Battery Terminals Cleaning, Battery Removal/Installation, Electrolyte Level Check, Battery Recharging, Fuse Changing, Side Stand & Safety Switch Check, Switch Checks, Headlight Beam Adjustment, Bulb Replacement (Headlight, Indicators, Rear Light), Transmission Oil Change, Oil Level Check & Top-up, Front & Rear Wheel Removal/Installation, Drive Chain Adjustment & Maintenance, Brake Pad Wear Check, Accelerator Control Adjustment, Cold Start Control Adjustment, Idling Adjustment, Air Cleaner Inspection, Suspension Inspection, Brake Adjustment (Rear), Clutch Adjustment, Shifting Lever Adjustment.
Technical Areas:
Spark Plugs (Automatic), Catalytic Silencer, Exhaust Silencer, Fuel Tank Draining, Long Inactivity Procedures (Battery & Vehicle), Cleaning Procedures.
Depth Of Coverage:
Comprehensive owner-level maintenance and operational guidance, including basic checks, adjustments, and component replacement. Suitable for everyday use and routine upkeep.
Engine Type:
2-stroke, single-cylinder
Cooling System:
Liquid-cooled
Displacement:
124.8 cc (approximate, typical for RS125)
Horsepower Range:
Typically around 30-35 HP depending on specific market emissions regulations and tuning (full power version).
Carburetion:
Carburetor (specific model not listed, but typically Dell'Orto or similar for this era).
Fuel Type Recommendation:
Unleaded gasoline (specified in 'FUEL' section).
2 Stroke Oil Tank:
Separate oil tank for 2-stroke lubrication.
Braking System:
Hydraulic disc brakes front and rear.
Tire Recommendations:
Specific tire sizes and pressure checks are covered (implied by 'TYRES' section).
Lighting System:
Headlight, taillight, brake light, and turn signals (bulb types and replacement procedures detailed).
Stand Safety Switch:
Check of the side stand and its safety switch is included.
Service Schedule:
Regular Service Intervals Chart provided (page 44), outlining scheduled maintenance tasks.
Brake Fluid:
DOT 4 recommended (specified in 'BRAKE FLUID-recommendations' section).
Transmission Oil:
Specific transmission oil type and capacity covered in 'TRANSMISSION OIL' section (page 49).
Coolant:
Coolant specifications and checks are detailed in the 'COOLANT' section (page 32).
2 Stroke Oil:
Specific 2-stroke oil type is not explicitly stated in the table of contents, but oil level checks and topping up are covered (page 48).
Common Issues Notes:
While not explicitly listed as 'known issues', the manual's detailed maintenance sections address typical wear items like brake pads, chain, and tire wear, as well as engine adjustments (idling, acceleration) common to performance 2-stroke motorcycles.
Technical Data Section:
Dedicated 'TECHNICAL DATA' section on page 78 provides key specifications.
Lubricant Chart:
A 'LUBRICANT CHART' is included on page 81, specifying appropriate lubricants for various components.