Target Audience:
Professional technicians and advanced do-it-yourself mechanics with basic electrical and mechanical knowledge.
Manual Type Comparison:
Comparable to a factory service manual, offering more detail than a typical owner's manual and potentially more accessible than out-of-print physical versions.
Feature 1:
Step-by-step repair procedures.
Feature 2:
Critical specifications and torque values.
Feature 3:
Illustrations and diagrams.
Feature 4:
Disassembly, assembly, cleaning, and reinstallation guidance.
Feature 5:
Troubleshooting and diagnostic information.
Engine:
Detailed diagnosis, repair, and overhaul of the two-stroke engine, including top-end, bottom-end, carburetor, cooling system, and exhaust.
Transmission:
Gearbox maintenance, disassembly, assembly, and troubleshooting. Includes clutch operation and adjustments.
Electrical System:
Wiring diagrams, component testing, ignition system, lighting, charging system, and starter circuit.
Chassis And Suspension:
Front fork service and overhaul, rear shock absorber maintenance, linkage bearings, and frame inspection.
Brakes:
Front and rear brake system maintenance, caliper service, fluid replacement, and troubleshooting.
Fuel System:
Fuel tank, fuel lines, carburetor (likely Mikuni or Dell'Orto), and fuel delivery system.
Cooling System:
Radiator, coolant hoses, water pump, and coolant specifications for the liquid-cooled engine.
Bodywork And Plastics:
Fairings, seat, fenders, and other body components, including removal and installation procedures.
Routine Maintenance:
Oil changes, air filter cleaning/replacement, spark plug checks, chain lubrication and adjustment, coolant checks.
Engine Overhaul:
Top-end rebuild (piston, rings, cylinder), bottom-end service (crankshaft, bearings), valve clearance adjustment (not applicable for 2-stroke, but general engine work).
Carburetor Service:
Disassembly, cleaning, inspection, reassembly, and adjustment of the carburetor for optimal performance and fuel mixture.
Suspension Service:
Fork oil changes, seal replacement, shock absorber service, and linkage lubrication.
Brake System Maintenance:
Brake pad replacement, brake fluid flush and bleed, caliper piston service.
Electrical Troubleshooting:
Diagnostic procedures for common electrical faults, using wiring diagrams to locate issues.
Wheel And Tire Service:
Tire replacement, wheel balancing, and spoke tensioning.
Lubrication Points:
Identification and specification of all lubrication points on the motorcycle.
Depth Level:
Advanced. Covers detailed disassembly, assembly, diagnosis, and repair procedures, suitable for professional technicians and experienced DIY mechanics.
Diagnostic Capabilities:
Detailed troubleshooting guides and symptom-based diagnostics.
Rebuild Procedures:
Complete engine rebuild, transmission overhaul, and suspension component rebuilding.
Engine Configuration:
Single-cylinder, liquid-cooled, two-stroke
Displacement:
125 cc (Cubic Centimeters)
Bore X Stroke:
Specific values would be detailed in the manual (e.g., 54 mm x 54.5 mm)
Carburetor Type:
Likely a single Mikuni TM or Dell'Orto PHM series carburetor.
Ignition System:
Electronic ignition (CDI) with variable ignition timing.
Horsepower:
Approx. 25-35 HP (depending on specific tuning and homologation)
Torque:
Specific values would be detailed in the manual.
Fuel Type:
Unleaded gasoline (minimum 95 octane recommended), mixed with 2-stroke oil at a specified ratio (e.g., 1:30 or 1:40).
Oil Mixture:
Premix or Autolube system (manual will specify).
Oil Change Interval:
Refer to manual for specific intervals, but typically every 1,500-3,000 km for 4-stroke, or based on hours for 2-stroke depending on usage.
Spark Plug Inspection:
Frequent checks recommended for 2-stroke engines, typically every 500-1000 km or as per manual.
Chain Lubrication:
Every 300-500 km, or after riding in wet conditions.
Engine Oil Type:
Specific 2-stroke engine oil with appropriate JASO rating (e.g., JASO FD) and viscosity (e.g., 10W-40 for gearbox, if separate).
Coolant Type:
Ethylene glycol-based antifreeze, mixed with distilled water (typically 50/50 ratio). Specific type and capacity in manual.
Brake Fluid Type:
DOT 4 hydraulic brake fluid is commonly used.
Common Wear Items:
Piston rings, small end bearing, clutch plates, wheel bearings, fork seals, and chain/sprockets are common wear items on performance 2-stroke motorcycles.
Carburetor Tuning:
Proper carburetor jetting and tuning can be sensitive to altitude, temperature, and modifications, requiring attention.
Electrical Connections:
Older motorcycles can experience corroded electrical connectors, leading to intermittent issues.
