Segment:
Competition Motocross/Off-road Motorcycle
Competitors:
Competes with models from KTM (SX-F series), Yamaha (YZF series), Honda (CRF series), Kawasaki (KX series), and Suzuki (RM-Z series) in the 450cc class.
Features:
Known for its potent engine, agile chassis, and performance-oriented suspension, designed for competitive off-road riding.
Engine:
Comprehensive coverage of the 450cc liquid-cooled single-cylinder engine, including disassembly, assembly, inspection, and diagnosis of all internal and external components.
Transmission:
Detailed information on the transmission system, including clutch operation, gear shifting mechanisms, and lubrication.
Fuel System:
In-depth coverage of the fuel injection system, including injector testing, fuel pump operation, pressure regulation, and component troubleshooting.
Ignition System:
Troubleshooting and repair procedures for the electronic ignition system, including coil testing and sensor diagnostics.
Cooling System:
Procedures for coolant flushing, radiator and fan service, thermostat replacement, and leak detection.
Exhaust System:
Information on exhaust system inspection, repair, and replacement.
Suspension Front:
Detailed instructions for servicing the front suspension, including fork oil changes, seal replacement, and internal component overhauls.
Suspension Rear:
Comprehensive procedures for rear shock absorber maintenance, linkage service, and bearing replacement.
Brakes Front:
Brake system service, including pad replacement, caliper overhaul, master cylinder service, and bleeding procedures.
Brakes Rear:
Rear brake system service, including pad replacement, caliper service, and bleeding procedures.
Wheels And Tires:
Information on wheel bearing inspection, tire pressure, and replacement.
Electrical System:
Wiring diagrams, troubleshooting guides for electrical components, battery service, lighting, and starter system.
Frame And Bodywork:
Inspection, repair, and replacement of frame components, plastic body panels, and seat.
Maintenance:
Scheduled maintenance tasks, oil and filter changes, spark plug replacement, air filter cleaning/replacement, chain adjustment.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common and uncommon problems.
Repair:
Detailed step-by-step repair instructions for all major vehicle systems, from minor adjustments to complete component overhauls.
Disassembly Assembly:
Complete instructions for the removal and reinstallation of all major assemblies and components.
Torque Specifications:
Essential torque values for critical fasteners throughout the motorcycle.
Diagnostic Procedures:
Methods for diagnosing electrical and mechanical faults, including use of specialized tools.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds. Suitable for professional mechanics and experienced DIY enthusiasts.
Engine Type:
4-stroke, Liquid-cooled, Single-cylinder
Bore X Stroke:
95 mm x 63.4 mm (Typical for this era and displacement)
Compression Ratio:
Typically around 12.0:1 or higher for performance engines.
Valve Train:
DOHC, 4 valves per cylinder
Horsepower:
Estimated 50-55 HP (Actual figures can vary based on dyno testing and specific tune)
Torque:
Estimated 45-50 Nm (Actual figures can vary based on dyno testing and specific tune)
Fuel Delivery:
Electronic Fuel Injection (EFI) - likely Keihin or Mikuni throttle body system.
Fuel Type:
Unleaded gasoline, minimum 90 octane
Oil Capacity:
Approximately 1.5 - 1.8 liters (including transmission and clutch lubrication, typical for shared sumps).
Oil Type Specification:
SAE 10W-50 or 15W-50 JASO MA rated motorcycle specific oil.
Length:
Refer to manual for exact dimensions, typically around 2150 mm
Width:
Refer to manual for exact dimensions, typically around 800 mm
Height:
Refer to manual for exact dimensions, typically around 1250 mm
Dry Weight:
Approximately 105 kg (231 lbs)
Wet Weight:
Approximately 115-120 kg (253-265 lbs) with all fluids.
Oil Change:
Every 15-20 hours of riding or annually. Refer to manual for precise intervals based on usage.
Air Filter:
Clean every 5-10 hours, replace as needed. Crucial for engine longevity.
Spark Plug:
Inspect every 20-30 hours, replace as needed. Typically NGK CR8E or equivalent.
Chain Lubrication Adjustment:
Inspect and lubricate every 5-10 hours, adjust tension as needed.
Engine Oil:
SAE 10W-50 or 15W-50 JASO MA motorcycle oil (e.g., Motul 5100 15W-50).
Coolant:
Ethylene glycol-based antifreeze mixed with distilled water at a 50/50 ratio. Recommended type: Prestone Extended Life Antifreeze/Coolant or similar.
Brake Fluid:
DOT 4 hydraulic brake fluid.
Fork Oil:
Specific viscosity and quantity detailed in the manual (commonly around 5W or 10W).
Common Problems:
Potential for wear on valve seats with hard use, clutch wear, and regular maintenance of suspension components is critical. EFI system checks may be required periodically.
Heritage:
Husqvarna Motorcycles has a long and storied history, originating in Sweden in 1903, and is renowned for its off-road racing prowess and innovation.
Evolution:
The TXC line represents Husqvarna's entry into the competitive closed-course off-road market, evolving from their enduro and motocross heritage. The 2010 model saw updates typical for the period, focusing on engine performance, suspension refinements, and chassis geometry.
Manufacturing Location:
Italy (at the time of ownership by BMW Group)
