Vehicle Class:
High-performance Supermoto motorcycle
Target Audience:
Enthusiasts, professional mechanics, and DIY owners of Husqvarna SM 400/450 R models from 2001-2004
Competitive Landscape:
Competes with other European and Japanese manufacturers offering supermoto and enduro-derived street motorcycles during the early 2000s (e.g., KTM, Aprilia, Yamaha WRX series).
Manual Value Proposition:
Comprehensive, factory-level technical information providing the same data used by authorized service centers, ensuring accuracy and completeness for all maintenance and repair tasks.
Manual Utility:
Enables owners to perform all service and repair tasks, reducing reliance on external workshops and increasing motorcycle longevity and performance.
Manual Type:
Factory Service Repair Workshop Manual
Language:
English (Assumed based on typical market for this type of manual)
Coverage Scope:
Complete repairs, servicing, and troubleshooting
Page Count Estimate:
Hundreds of pages (Specific number not provided, indicative of comprehensive coverage)
Accessibility:
Downloadable for computer, tablet, smartphone
Licensing:
Unlimited use, no expiry dates, no renewal fees
Compatibility:
Windows and MAC computers
Printable:
Yes, single pages or entire manual
Engine Systems:
Engine assembly/disassembly, lubrication, cooling, fuel delivery, ignition, starting system, exhaust system, engine management
Drivetrain Systems:
Clutch operation, transmission overhaul, gear shifting mechanisms, final drive (chain and sprockets)
Chassis Systems:
Frame inspection and repair, suspension (forks, rear shock), steering system, wheels, tires, brakes (front and rear, hydraulic systems), electrical system (wiring, lighting, ignition components, battery)
Bodywork And Trim:
Fairings, seat, fuel tank, fenders, graphics, control levers, footpegs
Maintenance Procedures:
Regular servicing, oil changes, filter replacements, chain adjustment, brake fluid checks, valve clearance adjustments, spark plug replacement, general inspections
Repair Procedures:
Engine rebuild, transmission repair, suspension fork rebuild, brake caliper overhaul, electrical component replacement, frame straightening (if applicable), bodywork repairs
Troubleshooting Procedures:
Diagnostic charts, common problems and solutions, electrical system fault finding, engine performance issues
Technical Data And Specifications:
Torque values, clearances, fluid capacities, electrical component resistance, dimensional data, component part numbers (likely)
Depth:
Professional-level detail, including step-by-step instructions, detailed photos, and exploded diagrams for complete rebuilds and complex diagnostics.
Engine Type:
Single-cylinder, four-stroke (LC4 engine architecture common for this era)
Engine Displacement:
400cc and 450cc variants (Specific bore and stroke may vary, detailed in manual)
Cooling System:
Liquid-cooled (Radiator and fan likely standard)
Horsepower Estimate:
Typically in the range of 40-50 HP for this displacement and configuration, specific figures to be detailed in manual.
Torque Estimate:
Responsive torque delivery characteristic of this engine type, specific figures in manual.
Fuel Delivery:
Carburetor (likely Mikuni or Keihin), with specific model and jetting details in the manual. Fuel injection may have been an option on some later models or variants not explicitly mentioned.
Ignition Type:
Electronic ignition (CDI or TCI), with details on timing and components.
Engine Architecture:
LC4 (Liquid Cooled, 4-valve) architecture, known for its torque and versatility.
Transmission Type:
Constant mesh, 5 or 6-speed sequential gearbox
Optional Transmissions:
N/A (Motorcycles typically have a single transmission configuration)
Clutch Type:
Wet, multi-plate clutch, likely hydraulically actuated.
Gear Ratios:
Specific gear ratios for each speed are detailed within the manual.
Wheelbase:
Specific dimensions will be in the manual, typical for a supermoto: approx. 1450-1500 mm.
Seat Height:
High seat height typical for supermoto, likely around 900-950 mm.
Dry Weight:
Estimated between 120-135 kg, depending on specific model and equipment. Actual figures in manual.
Fuel Capacity:
Typically around 7-9 liters for this class of motorcycle. Specific capacity detailed in manual.
Safety Standards:
Compliant with relevant motorcycle safety standards of the era. Specific certifications not provided.
Braking System:
Hydraulic disc brakes front and rear. Likely a larger diameter front disc for superior stopping power, with specific caliper and master cylinder details in manual.
Suspension Features:
Adjustable front forks (preload, compression, rebound) and adjustable rear shock absorber for optimal handling and rider customization.
Lighting System:
Headlight, taillight, brake light, turn signals, and indicator lights as per road legality requirements.
Instrumentation:
Analog or digital/analog combination dashboard featuring speedometer, tachometer, odometer, trip meter, and indicator lights for neutral, turn signals, high beam, and oil pressure/warning.
ABS Availability:
Anti-lock Braking System (ABS) was generally not a standard feature on supermotos of this era; likely not equipped unless specified as an optional upgrade. Manual will confirm.
Bluetooth Connectivity:
Not applicable for this model year and type of motorcycle.
Oil Change Interval:
Typically every 3,000-5,000 km or annually, with precise intervals detailed in the manual. Special attention to the semi-dry sump system might be required.
Valve Clearance Interval:
Recommended every 6,000-10,000 km, with exact figures and adjustment procedures in the manual.
Engine Oil Type:
High-quality motorcycle-specific 4-stroke engine oil, likely SAE 10W-50 or 15W-50, meeting JASO MA standards. Specific API rating and capacity in manual.
Coolant Type:
Ethylene glycol-based antifreeze/coolant mixed with distilled water. Specific mixture ratio and type detailed in manual.
Brake Fluid Type:
DOT 4 or DOT 5.1 hydraulic brake fluid. Exact specification and change intervals in manual.
Fork Oil Type:
Specific suspension fork oil viscosity (e.g., 5W, 10W) and quantity per fork leg provided in manual.
Common Wear Items:
Clutch plates, chain and sprockets, brake pads, fork seals, wheel bearings, and electrical connector integrity (especially if exposed to moisture).
Engine Specific Considerations:
LC4 engines can be sensitive to oil levels and regular maintenance. Decompression mechanism checks might be relevant for starting ease.
Brand Origins:
Husqvarna Motorcycles, one of the oldest motorcycle manufacturers in the world, with a rich history in off-road and racing.
Model Lineage:
The SM 400/450 R models represent Husqvarna's successful transition of their renowned off-road (Enduro and Motocross) platforms into street-legal supermoto machines, leveraging the robust LC4 engine.
Manufacturing Location:
Likely manufactured in Sweden or Italy during this period, depending on ownership structure at the time (Husqvarna was part of the Cagiva Group for a period).
Motocross Heritage:
Husqvarna's strong off-road racing heritage informs the design and capability of the SM models, contributing to their performance and durability.
Enthusiast Reviews:
Generally well-regarded for their potent engines, agile handling, and off-road prowess adapted for street use. Manual provides the technical backbone for maintaining this performance.
