Segment:
Supermoto / Street-legal Dirt Bike
Target Audience:
Enthusiasts, racers, and DIY mechanics focused on performance and customization of their SMR450R.
Key Competitors:
KTM 450 EXC, GasGas EC450F, Yamaha WR450F (converted for supermoto).
Vehicle Focus:
Performance-oriented, lightweight, agile motorcycle designed for both off-road capability and on-road agility.
Manual Benefit:
Empowers owners to perform all necessary maintenance and repairs, reducing reliance on dealerships and ensuring optimal performance.
Primary Coverage:
Comprehensive service and repair procedures for the Husqvarna SMR450R.
Secondary Coverage:
Maintenance schedules, troubleshooting, electrical diagrams, torque specifications, exploded diagrams.
Estimated Pages:
300-400 pages (typical for this level of detail)
Type:
Service Repair Manual
Searchability:
Likely text-searchable PDF for quick information retrieval.
Printability:
Printable pages, allowing for physical copy creation.
Quality:
High-resolution scans ensuring clarity of diagrams and text.
Binding:
Not applicable (PDF format)
Paper:
Not applicable (PDF format)
Engine:
Complete engine disassembly, assembly, tuning, component testing, fuel injection system, ignition system, cooling system.
Transmission:
Clutch operation, gearbox disassembly and assembly, shift mechanism, lubrication.
Chassis:
Frame inspection, steering head bearings, suspension (forks, rear shock), swingarm, wheel bearings.
Brakes:
Hydraulic brake system (front and rear), caliper service, master cylinder service, brake fluid replacement, bleeding procedures, rotor specifications.
Electrical:
Wiring diagrams, lighting system, battery, charging system, starter motor, ignition system components, sensors, diagnostic connectors.
Fuel System:
Fuel pump, fuel injectors, fuel pressure regulator, fuel filter replacement, throttle body service.
Exhaust System:
Exhaust pipe and muffler inspection, mounting hardware.
Cooling System:
Radiator, coolant hoses, thermostat, coolant type and capacity.
Routine Maintenance:
Oil changes, filter replacement (oil, air), chain adjustment and lubrication, spark plug replacement, valve clearance checks and adjustment, brake pad inspection and replacement, coolant flushes.
Troubleshooting:
Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides.
Repair Procedures:
Detailed instructions for component removal, installation, rebuilding, and calibration.
Diagnostic Tools:
Information on specific tools and diagnostic equipment required for servicing.
Special Tools:
Identification and usage of specialized tools unique to Husqvarna servicing.
Depth Level:
Comprehensive, covering everything from basic rider maintenance to full engine and transmission rebuilds.
Diagnostic Complexity:
Advanced diagnostics for electrical and mechanical systems, including fuel injection and ignition mapping.
Engine Type:
Four-stroke, single-cylinder, liquid-cooled, DOHC
Displacement:
449.6 cc (27.4 cubic inches)
Bore X Stroke:
95 mm x 63.4 mm (approximate, confirm with manual)
Compression Ratio:
12.0:1 (approximate, confirm with manual)
Horsepower:
Approx. 50-55 hp (at crankshaft, estimate)
Torque:
Approx. 33-36 lb-ft (at crankshaft, estimate)
Fuel Delivery:
Electronic Fuel Injection (EFI) - Keihin or Mikuni throttle body, likely 41mm or 43mm.
Fuel Type:
Unleaded gasoline, minimum 91 octane (RON+MON)/2
Oil Type:
JASO MA certified 4-stroke motorcycle oil, SAE 10W-50 or 15W-50 recommended (verify with manual).
Ignition System:
Digital CDI with variable ignition timing.
Transmission Type:
Constant mesh, 5-speed sequential
Clutch Type:
Wet, multi-plate, hydraulic actuation
Final Drive:
Chain drive (520 pitch typically)
Gear Ratios:
Specific ratios are detailed in the manual.
Transmission Oil Type:
Specific gear oil recommended in manual, often same as engine oil but check specification.
Wheelbase:
Approx. 1460 mm (57.5 inches) (verify)
Seat Height:
Approx. 915 mm (36 inches) (verify)
Dry Weight:
Approx. 115 kg (253.5 lbs) (verify)
Wet Weight:
Approx. 125 kg (275.6 lbs) (with fluids, estimate)
Fuel Tank Capacity:
Approx. 8.5 Liters (2.25 US gallons) (verify)
Safety Standards:
Designed to meet road legality requirements (e.g., DOT, ECE for lighting and mirrors where applicable), but primarily track/off-road focused.
Braking System:
Hydraulic disc brakes front and rear, often with dual pistons front and single piston rear.
Tire Specifications:
Front: 120/70-17, Rear: 150/60-17 (typical supermoto setup, confirm).
Suspension:
Upside-down telescopic front forks (e.g., Marzocchi or Sachs), adjustable rear monoshock with linkage.
Lighting:
Headlight, tail light, brake light, turn signals (for street legal models).
Horn:
Present for street legality.
Infotainment System:
N/A (This is a performance motorcycle, not equipped with traditional infotainment).
Driver Assistance Features:
N/A (Focus is on rider control, not electronic aids beyond engine management).
Connectivity Features:
N/A
ECU Capabilities:
Engine Control Unit (ECU) manages fuel injection and ignition timing, with potential for ECU re-flashing for performance tuning.
Oil Change Interval:
Every 10-15 hours of riding or annually. (Specific interval will be in the manual).
Oil Filter Change Interval:
Every oil change (highly recommended).
Air Filter Cleaning:
Every 5-10 hours of riding, or more frequently in dusty conditions.
Valve Clearance Check:
Every 20-30 hours of riding (critical for performance and engine longevity).
Chain Lubrication:
Every 500 km (300 miles) or after washing/wet riding.
Chain Adjustment:
As needed, maintaining proper slack.
Engine Oil Capacity:
Approx. 1.1 - 1.3 Liters (verify with manual).
Coolant Type:
Ethylene glycol based antifreeze, 50/50 mix with distilled water.
Brake Fluid Type:
DOT 4 specification hydraulic brake fluid.
Common Wear Items:
Clutch plates, wheel bearings, steering head bearings, fork seals, chain and sprockets.
Potential Electrical Gremlins:
While generally robust, owners should be aware of proper grounding and wiring harness integrity, especially in off-road conditions. Manual's wiring diagrams are crucial.
Fuel System Maintenance:
Regular cleaning of the fuel filter and injector tip can prevent starting issues.
Brand Origin:
Husqvarna Motorcycles is one of the oldest motorcycle manufacturers in the world, founded in Sweden in 1903.
Brand Specialty:
Known for off-road motorcycles, motocross, enduro, and later supermoto models.
Smr Series:
The SMR (Supermoto Racing) line represents Husqvarna's entry into the popular supermoto segment, blending dirt bike agility with road-racing tires and suspension.
450Cc Era:
The 450cc class became a dominant force in supermoto racing and street performance during the 2000s.
Production Period:
Husqvarna motorcycles were produced in Italy under the Cagiva Group until acquisition by BMW Motorrad in 2007, and then later by Pierer Mobility Group (KTM).
Manufacturing Location:
Italy (during the 2007-2008 period).
