Segment:
Lightweight Off-Road/Supermoto Segment
Target Audience:
Enthusiasts, riders seeking an agile and potent 125cc machine for both street and light off-road use
Key Competitors 2011:
KTM 125 EXC, Yamaha WR125X/R, Aprilia SXV/RXV 125, Beta RR 125
Model Variants:
WRE (Enduro-oriented styling) and SMS (Supermoto styling) offer distinct chassis and wheel setups
Engine Type:
Liquid-cooled, 2-stroke, single-cylinder engine known for its spirited performance in the 125cc class
Chassis Design:
Lightweight, agile chassis providing excellent handling characteristics
Engine:
Complete overhaul, top end (cylinder, piston, head), bottom end (crankshaft, bearings, seals), valve timing, cooling system (radiator, hoses, coolant), lubrication system (oil pump, passages)
Fuel System:
Carburetor (Dell'Orto PHBH 28 TS, likely), fuel lines, fuel pump (if applicable), fuel tank, fuel petcock
Transmission:
Gearbox disassembly and assembly, clutch operation, shift mechanism, lubrication
Electrical System:
Ignition system (CDI, spark plug), lighting (headlight, taillight, indicators), battery, charging system (stator, regulator/rectifier), starter motor, wiring diagrams
Chassis And Suspension:
Frame inspection and repair, front forks (USD, oil levels, seals, damping), rear shock absorber (preload, damping), swingarm, linkage (if applicable), bearings (headstock, swingarm, wheel)
Brakes:
Front and rear brake systems (hydraulic), caliper overhaul, master cylinder, brake lines, pads, discs, bleeding procedures
Wheels And Tires:
Wheel bearing replacement, tire mounting and balancing, spoke tensioning (if applicable)
Bodywork And Trim:
Fairings, plastics, seat, fuel tank removal and installation
General Maintenance:
Oil changes, filter replacements, chain adjustment, lubrication points, spark plug replacement
Troubleshooting:
Diagnostic procedures for common issues, symptom analysis, electrical fault finding
Engine Repair:
Detailed step-by-step guides for major engine work, including component disassembly, inspection, and reassembly with torque specifications
Transmission Repair:
Clutch adjustment and replacement, gearbox internal repairs
Suspension Tuning:
Fork oil level and viscosity changes, rear shock servicing
Brake System Service:
Brake fluid replacement, pad and disc replacement, caliper service
Carburetor Tuning:
Adjustment of idle speed, mixture screw, jetting recommendations (likely generic or based on common configurations)
Electrical Diagnostics:
Using multimeter for voltage, resistance, and continuity checks, troubleshooting wiring faults
Depth Level:
Comprehensive - Covers routine maintenance to complete engine and chassis rebuilds
Diagnostic Focus:
Detailed fault finding charts and explanations for common problems
Special Tools:
Lists of specific tools required for certain procedures (e.g., flywheel puller, clutch holder tool)
Engine Type:
2-stroke, single-cylinder, liquid-cooled
Bore X Stroke:
54 x 54.5 mm (typical for this engine family)
Compression Ratio:
Approximately 8.8:1 (subject to specific market tune)
Power Output Hp:
Around 15 hp (often restricted for learner riders, with a more potent uncorked version available)
Torque Nm:
Approximately 10-12 Nm (estimated)
Ignition:
CDI electronic ignition
Cooling System:
Liquid-cooled via radiator and fan
Lubrication:
Pre-mix (fuel and oil) or separate oil injection system (check specific model configuration)
Carburetor:
Dell'Orto PHBH 28 TS (or similar 28mm unit)
Fuel Type:
Unleaded gasoline, minimum 95 RON
Fuel Tank Capacity:
Approximately 7-8 Liters
Crash Safety:
N/A (Motorcycles do not typically receive standardized crash test ratings like cars)
Braking System:
Hydraulic disc brakes front and rear, providing strong stopping power.
Suspension Damping:
Adjustable suspension components (front forks and rear shock) allow for tuning to rider preference and conditions.
Lighting:
Full complement of legal lighting: headlight, taillight, brake light, front and rear turn signals.
Frame Integrity:
Robust steel frame designed for durability and rider feedback.
Oil Change Engine:
Every 3,000-5,000 km or annually, whichever comes first (check manual for specific interval and oil type/capacity)
Air Filter Cleaning:
Every 1,000-2,000 km or more frequently in dusty conditions
Spark Plug Replacement:
Every 6,000-8,000 km or as needed based on inspection
Chain Lubrication And Adjustment:
Every 500-1000 km, or more frequently if exposed to wet conditions
Valve Clearance Check:
2-stroke engines typically do not have adjustable valve clearances in the same way as 4-strokes. However, piston ring and cylinder inspection would be critical at higher mileages.
Engine Oil:
2-stroke oil for premix (if applicable) or specific gearbox oil as mentioned above. Consult manual for brand and type recommendations.
Coolant:
Ethylene glycol based coolant with corrosion inhibitors, mixed with distilled water (50/50 ratio). Refer to manual for specific type and capacity.
Brake Fluid:
DOT 4 hydraulic brake fluid
Common Wear Items:
Clutch plates, piston rings, spark plugs, chain and sprockets, wheel bearings, suspension seals (typical for high-performance 125cc 2-strokes).
Carburetor Issues:
Can be prone to clogging if fuel quality is poor or if the bike sits for extended periods. Proper cleaning and jetting are crucial.
Cooling System Maintenance:
Regular checks of coolant level and radiator fins are important to prevent overheating.
Manufacturer Origin:
Husqvarna Motorcycles, a Swedish brand with a long history dating back to 1903, now owned by BMW Group (at the time of this model's production).
Predecessor Models:
Husqvarna has a long lineage of 125cc off-road and enduro motorcycles, evolving through various engine and chassis designs.
Relation To Other Husqvarna Models:
Shares engine and chassis architecture with other contemporary Husqvarna 125cc offerings, with variations in suspension, wheels, and styling to define WRE and SMS roles.
Manufacturing Location:
Italy (Husqvarna motorcycles were produced in Italy under BMW ownership)
Production Period:
The WR/SMS 125 platform was produced for several years, with the 2011 model representing a specific iteration within that timeframe.
