Segment:
Lightweight Supermoto Motorcycle
Target Audience:
Enthusiasts, DIY mechanics, service technicians working on Husqvarna SM 125 S models
Competitors Segment:
Other 125cc supermotos/motards of the era (e.g., KTM 125 EXC, Aprilia SX 125)
Manual Value Proposition:
Provides comprehensive, detailed repair and maintenance information for specific model years, enabling cost-effective servicing and optimal performance.
Diagnostic Aid:
Essential for accurate diagnosis and repair of potential issues common to this model.
Performance Optimization:
Facilitates proper tuning and adjustments to maintain peak performance.
Engine Mechanical:
Full overhaul, piston, rings, cylinder, crankshaft, connecting rod, bearings, seals, gaskets
Engine Fuel System:
Carburetor (Mikuni VM series likely), fuel lines, fuel filter, fuel tank maintenance
Engine Ignition System:
CDI unit, spark plug, ignition coil, wiring, timing adjustment (if applicable)
Engine Cooling System:
Liquid-cooled system, radiator, hoses, water pump, thermostat, coolant specifications
Exhaust System:
Exhaust pipe, silencer, gaskets, mounting hardware
Transmission:
Clutch operation, gearbox disassembly/assembly, gear inspection, shifting mechanism, transmission oil
Chassis Frame:
Frame inspection, alignment checks, steering head bearings
Suspension Front:
Front forks (USD type likely), oil levels, seals, springs, damping adjustments, disassembly/re-assembly
Brakes Front:
Brake caliper, master cylinder, brake lines, brake pads, rotor inspection/replacement, bleeding procedure
Brakes Rear:
Brake caliper, master cylinder, brake lines, brake pads, rotor inspection/replacement, bleeding procedure
Wheels And Tires:
Wheel bearing inspection, tire pressure, wheel balancing (basic), spoke tension (if applicable)
Electrical System:
Wiring diagrams, lighting, horn, battery maintenance, starter motor, charging system (alternator/stator)
Controls:
Throttle control, clutch lever, brake levers, shift lever, foot pegs
Rear Suspension:
Shock absorber, linkage system (if applicable), adjustments, rebuild procedures
Bodywork Panels:
Fairings, seat, fuel tank cover, fender removal/installation
Maintenance:
Regular scheduled maintenance, oil changes, filter replacements, chain adjustment, lubrication
Troubleshooting:
Diagnostic flowcharts, common problems and solutions, electrical troubleshooting
Repair:
Component removal, installation, adjustment, rebuild procedures
Disassembly Assembly:
Step-by-step instructions for complete teardown and reassembly of major components
Technical Specifications:
Torque specifications, clearances, fluid capacities, electrical values
Depth:
Comprehensive: from basic maintenance to full engine and transmission rebuilds
Type:
Exploded views, wiring diagrams, schematics, step-by-step illustrations
Engine Type:
Two-stroke, single-cylinder
Displacement:
124.8 cc (approximate)
Bore X Stroke:
Typically around 54 mm x 54.5 mm (specific values to be confirmed by manual)
Cooling System:
Liquid-cooled
Power Delivery:
Known for strong mid-range and top-end power typical of its class
Horsepower Estimated:
Approximately 15-20 HP (stock, varies by market and specific tuning)
Torque Estimated:
Approximately 10-12 Nm (stock)
Carburetor Model:
Likely Mikuni VM28 or similar
Fuel Type:
Unleaded gasoline (recommended octane rating to be specified in manual)
Fuel Mixture:
Premix or Oil Injection system (manual will detail which)
Engine Oil Type:
Two-stroke engine oil (specific API/JASO rating in manual)
Transmission Oil Type:
Gear oil / Transmission fluid (specific viscosity and spec in manual, likely SAE 80W-90 or similar)
Oil Change Interval:
Every 2,000-3,000 km or annually (specific interval and oil type in manual)
Spark Plug Replacement:
Typically every 5,000-10,000 km, or as per manual recommendations
Air Filter Cleaning:
Regularly, especially in dusty conditions; refer to manual for specific intervals.
Chain Lubrication Adjustment:
Every 500-1000 km or after washing/riding in wet conditions.
Coolant Type:
Ethylene glycol-based antifreeze, mixed with distilled water (specific ratio and type in manual)
Fork Oil Type Level:
Specific viscosity (e.g., SAE 5W or 7.5W) and oil level (e.g., 110mm from top of stanchion) to be detailed in manual.
Common Wear Items:
Clutch plates, piston rings, exhaust packing, wheel bearings, chain and sprockets.
Carburetor Tuning:
May require periodic cleaning and adjustment for optimal performance, especially with fuel changes.
Cooling System Maintenance:
Regular checks for leaks and proper coolant levels are crucial for two-stroke engines.
