🏷️ Basic Information Identification Make: Husqvarna Model: 250 WR Year: 1978 Nickname: Husky Codes Chassis Code Prefix: Unknown (Specific to WR models, often internal Husqvarna codes) Engine Code Prefix: Unknown (Specific to 250cc WR engines, often internal Husqvarna codes) 👋 Introduction Market Position Vintage Motorcycle Parts: Essential resource for owners of vintage Husqvarna off-road motorcycles. Competitive Analysis Competitors: Genuine OEM parts suppliers, aftermarket parts specialists (where available). Key Features Benefit 1: Accurate parts identification to avoid incorrect purchases. Benefit 2: Protection against overcharging or incorrect parts supplied by mechanics. Benefit 3: Digital format allows for easy access and printing of specific sections. Guarantee: 30-day money-back guarantee 📋 Manual Details Coverage Areas Product Type: Parts Catalogue Intended Use: Spare parts identification and procurement Page Count Estimated Pages: Variable (Digital catalogues often don't have fixed page counts as printed, but imply comprehensive coverage) Manual Type Type: Parts Catalogue Associated Manuals: Likely complements Service Manuals and Owner's Manuals Language Language: English Format Digital Format: PDF Compatibility: Windows Desktop, Macs, iPad, most E-book readers 📖 Manual Coverage Systems Covered Engine: Component breakdown of the 250cc two-stroke engine (e.g., cylinder, piston, crankshaft, gearbox components, ignition, carburetor) Chassis: Frame components, suspension (front forks, rear shocks), steering assembly, swingarm Wheels And Brakes: Spoked wheels, hubs, spokes, nipples, brake drums, brake shoes, brake levers, control cables Fuel System: Fuel tank, fuel lines, fuel tap, carburetor components Exhaust System: Exhaust pipe, silencer (muffler), mounting hardware Bodywork And Controls: Fenders, seat, side panels, handlebars, levers, footpegs, gear shift mechanism, clutch mechanism Electrical System: Ignition coil, spark plug, stator, wiring harness components (though detailed wiring diagrams are usually in service manuals) Cooling System: Air-cooled engine, no specific components beyond general engine breakdown Procedures Included Part Identification: Accurate identification of all replaceable parts Part Number Reference: Listing of official Husqvarna part numbers for ordering Assembly Diagrams: Exploded view diagrams illustrating component relationships Technical Depth Depth: Detailed component breakdown for parts procurement and visual reference during disassembly/reassembly. Focus: OEM parts cataloguing, not diagnostic or repair procedures. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchability: Likely text-searchable if OCR'd Print Quality Print Option: Printable on demand, allows selective page printing Binding Type Binding Type: N/A (Digital format) Paper Type Paper Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Type: Two-Stroke Single Cylinder Displacement: Approximately 250cc (Specific bore x stroke needed for exact figure) Cooling: Air-cooled Induction: Carburetor (e.g., Bing, Mikuni - specific model would be in service manual) Performance Horsepower Est: Estimated 25-35 HP (typical for 250cc off-road engines of this era) Torque Est: Not readily available without specific model data, but focused on low-end grunt. Fuel System Fuel Type: Pre-mix gasoline (typically 2-stroke oil mixed with unleaded gasoline) Carburetor Size: Likely 32-38mm (e.g., Bing 54 or Mikuni VM series) 🔧 Transmission Standard Type: 6-Speed Sequential Manual Optional Optional Gearbox: N/A (Standard for WR models) Features Clutch: Wet, multi-plate clutch operated by cable Gear Ratios: Specific ratios would be detailed in a service manual, but designed for off-road performance. 📐 Dimensions Exterior Wheelbase: Approx. 55-57 inches (1400-1450mm) - typical for off-road bikes of the era. Seat Height: Approx. 34-36 inches (860-915mm) - adjustable via suspension tuning. Weights Dry Weight: Approx. 220-240 lbs (100-109 kg) - typical for 250cc off-road bikes. 🛡️ Safety Features Ratings Crash Safety: N/A (Motorcycle safety ratings not applicable in the same way as cars; focus on rider protection and bike stability). Active Features Brakes: Drum brakes front and rear (typical for 1978 off-road motorcycles). Passive Features Frame Design: Robust steel frame designed for off-road abuse. 💡 Technology Features Infotainment Features: N/A (No modern infotainment features; basic analog instrumentation). Driver Assistance Features: N/A (No electronic driver assistance systems). Connectivity Features: N/A (No connectivity features). 🔧 Maintenance Service Intervals Top End Rebuild: Highly variable based on usage, but typically 50-100 hours for competitive use. Spark Plug Replacement: As needed, depending on plug type and operating conditions (check for fouling). Air Filter Cleaning: Frequent cleaning required for off-road use, often after every ride. Chain Lubrication: Frequent lubrication and adjustment, especially after wet or muddy rides. Fluid Specifications 2Stroke Oil Ratio: Typically 20:1 to 40:1 (e.g., 32:1 is common), using a quality motorcycle 2-stroke oil. Refer to specific oil manufacturer recommendations. Transmission Oil: Specific gear oil or SAE 80W transmission oil. Capacity approx. 0.75 - 1.0 liter. Refer to service manual for exact type and procedure. Known Issues Ignition Systems: Points ignition can require regular adjustment and maintenance; electronic ignition systems (if fitted) can also have issues. Carburetor Tuning: Sensitive to altitude and temperature, often requires fine-tuning for optimal performance. Clutch Wear: Clutch plates can wear depending on riding style and usage. Suspension Seals: Fork and shock seals can degrade over time, leading to leaks. 📚 Vehicle History Brand Heritage Manufacturer: Husqvarna Motocyklar AB, Sweden Heritage Focus: Long history...