Segment:
High-performance off-road/motocross competition model.
Competitors 2010:
KTM EXC 450, Yamaha WR450F, Honda CRF450X, Kawasaki KX450F (off-road variant).
Features:
Powerful 450cc engine, advanced suspension, lightweight chassis designed for competition and aggressive off-road riding.
Engine:
Engine overhaul, disassembly, assembly, component testing, specifications, troubleshooting.
Fuel System:
Fuel injection system, fuel pump, injectors, fuel filter, carburetor (if applicable, though TXC models typically use FI).
Ignition System:
Ignition coil, spark plug, CDI unit, timing.
Transmission:
Gearbox disassembly, assembly, inspection, lubrication, clutch operation and service.
Drivetrain:
Final drive chain and sprockets, wheel bearings.
Suspension:
Front fork (KYB/Marzocchi typical for era) service, fork seals, oil levels, rear shock absorber service, linkage.
Brakes:
Front and rear brake systems, hydraulic lines, master cylinders, calipers, brake pads, bleeding procedures.
Electrical System:
Wiring diagrams, battery, starter system, lighting, sensors, ECU troubleshooting.
Cooling System:
Radiator, hoses, coolant, fan operation.
Frame And Bodywork:
Frame inspection, swingarm, subframe, body panel removal and installation.
Wheels And Tires:
Wheel removal, tire mounting/dismounting, spoke tensioning.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustments, brake checks.
Troubleshooting:
Systematic diagnostics for common and uncommon problems, error code interpretation (if applicable).
Repair:
Step-by-step instructions for component repair and replacement.
Disassembly Assembly:
Detailed procedures for taking apart and reassembling all major components.
Adjustments:
Valve clearance, throttle cable, clutch cable, suspension settings.
Special Tools:
Identification and usage of specialized tools required for specific procedures.
Depth:
Comprehensive, from basic maintenance to full engine rebuilds and complex system diagnostics.
Engine Type:
Four-stroke, Single-cylinder
Displacement:
Approximately 449.6 cc (exact figure may vary slightly by specific engine code within the TXC series).
Bore X Stroke:
Details available in manual, typically around 95 mm x 63.4 mm for this displacement.
Cooling System:
Liquid-cooled
Valve Train:
DOHC, 4 valves
Horsepower:
Estimated 50-55 HP (actual figures vary based on tuning and specific model variant, manual provides detailed power curves).
Torque:
Details available in manual, typically around 40-45 Nm.
Fuel Delivery:
Electronic Fuel Injection (EFI) - Keihin or Mikuni system likely.
Fuel Type:
Unleaded gasoline (91-98 octane recommended).
Oil Type:
JASO MA certified motorcycle engine oil (e.g., 10W-40, 15W-50 depending on ambient temperature).
Oil Capacity:
Details in manual, typically around 1.0-1.2 liters with filter change.
Type:
Constant mesh, 6-speed sequential.
Clutch Type:
Wet, multi-plate (hydraulic actuation typical).
Gear Ratios:
Specific gear ratios detailed within the manual for each gear.
Transmission Oil Type:
JASO MA certified motorcycle transmission oil.
Oil Change Interval:
Every 10-15 hours of riding or annually. Manual specifies precise intervals.
Air Filter Cleaning:
Frequent checks and cleaning recommended, especially in dusty conditions. Every 5-10 hours.
Valve Clearance Check:
Every 20-30 hours of riding. Manual provides exact specifications and procedure.
Fork Oil Type:
Specific viscosity and type (e.g., Motorex Fork Oil 5W or equivalent) detailed in manual.
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Common Wear Items:
Clutch plates, wheel bearings, steering head bearings, fork seals, chain and sprockets are common wear items on performance off-road bikes.
Engine Reliability:
Generally reliable when properly maintained. Overheating can be an issue in extreme conditions if cooling system is not maintained. Manual provides specific checks.
Suspension Maintenance:
Regular fork oil changes and shock service are crucial for optimal performance and longevity.
Brand Focus:
Husqvarna Motorcycles has a long history in off-road racing, particularly motocross and enduro, dating back to the early 20th century.
Txc Series:
The TXC series represents Husqvarna's foray into motocross-inspired, yet often dual-purpose or cross-country oriented, off-road machines.
Manufacturing Location:
Typically manufactured in Italy during this period, under ownership structures that evolved over time.
