This manual covers the 1991 WR-CR 125, WR 240, WR 250, WR 260, and CR 250 off-road motorcycles. These models represent a significant era in a long heritage as a manufacturer of high-performance two-stroke, single-cylinder, liquid-cooled engines, known for their competitive edge in motocross and enduro racing. Engineered for agile handling and robust performance, these machines were designed to tackle challenging terrains, reflecting Swedish origins and decades of development in off-road motorcycling. This comprehensive workshop service repair manual provides in-depth guidance for owners, mechanics, and technicians. It details essential maintenance procedures, including routine servicing and component overhauls, alongside troubleshooting diagnostics for common issues. The manual covers all major systems such as the engine, transmission, chassis, brakes, fuel, and electrical systems, offering specific procedures, adjustments, and torque specifications. With its extensive coverage and OEM-level technical detail, this English-language manual is an indispensable resource for maintaining and repairing these classic off-road motorcycles. 🏷️ Basic Information Identification Make: Husqvarna Model: WR-CR 125, WR 240, WR 250, WR 260, CR 250 Year: 1991 Codes Chassis Code Prefix: H40 Engine Code Prefix 125: 08-xx Engine Code Prefix 240 250 260: 07-xx 👋 Introduction Market Position Segment: Off-road/Enduro and Motocross motorcycles Target Audience: Owners, mechanics, and enthusiasts of 1991 Husqvarna WR and CR models. Competitive Analysis Competitors 1991: KTM, Yamaha YZ series, Honda CR series, Suzuki RM series, Kawasaki KX series. Key Features Manual Focus: Comprehensive repair and maintenance guidance for specific 1991 Husqvarna models. Oem Status: Described as 'Most Complete OEM', indicating high authenticity and detail. 📋 Manual Details Coverage Areas Primary Models Covered: Husqvarna WR-CR 125, WR 240, WR 250, WR 260, CR 250 Year Coverage: 1991 Page Count Estimated Page Count: Extensive (specific page count not provided, but typical for OEM service manuals) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, inspection, tuning, and troubleshooting for all listed displacements (125cc, 240cc, 250cc, 260cc). Transmission: Gearbox inspection, repair, clutch service, and adjustment procedures. Chassis: Frame inspection, front suspension (forks) service and overhaul, rear suspension (shock absorber, linkage) service. Brakes: Front and rear brake system inspection, maintenance, caliper service, hydraulic system bleeding, and pad replacement. Electrical: Ignition system, lighting, wiring diagrams, battery maintenance, and troubleshooting for electrical components. Fuel System: Carburetor identification, cleaning, adjustment, jetting, fuel tank, and fuel line maintenance. Cooling System: Radiator, hoses, and coolant maintenance (where applicable for specific models). Exhaust System: Muffler and pipe maintenance. Wheels And Tires: Wheel bearing maintenance, spoke tightening, and tire pressure recommendations. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, chain lubrication and adjustment, air filter cleaning. Troubleshooting Diagnostics: Detailed guides for diagnosing common starting, running, and performance issues. Component Overhaul: Complete disassembly and reassembly instructions for major components like the engine, carburetor, and suspension. Adjustments: Carburetor tuning, clutch adjustment, brake lever adjustment, suspension setup. Torque Specifications: Essential torque values for critical fasteners throughout the motorcycle. Wiring Diagrams: Comprehensive electrical schematics for all systems. Technical Depth Depth: OEM-level technical detail covering from basic maintenance to complete engine and chassis rebuilds. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable PDF (dependent on scan quality) Print Quality Quality: Varies by original source, typically black and white with clear diagrams. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 2-stroke, single cylinder, liquid-cooled (typical for these models) Bore Stroke 125: Approx. 54mm x 54.5mm (typical for 125cc) Bore Stroke 240: Approx. 67mm x 67mm (typical for 240cc) Bore Stroke 250: Approx. 68mm x 68mm (typical for 250cc) Bore Stroke 260: Approx. 70mm x 68mm (typical for 260cc) Reed Valve System: Standard (typical for performance 2-strokes) Performance Horsepower 125: Approx. 30-35 HP (estimated, specific to tuning) Horsepower 250: Approx. 38-45 HP (estimated, specific to tuning) Fuel System Carburetor Type 125: Mikuni VM34 (typical) Carburetor Type 250: Mikuni TM36 or similar (typical) Fuel Type: Unleaded gasoline mixed with 2-stroke oil (pre-mix ratio specified in manual) 🔧 Transmission Standard Type: 6-speed constant mesh manual transmission Features Clutch: Wet multi-plate clutch Final Drive: Chain drive 📐 Dimensions Exterior Wheelbase Approx: 1450mm - 1470mm (varies by model) Seat Height Approx: 940mm - 970mm (varies by model) Weights Dry Weight Approx: 100kg - 110kg (varies by model) 🛡️ Safety Features Ratings Safety Certification: Not applicable to off-road motorcycles in the same way as street vehicles. Focus is on mechanical integrity and rider control. Active Features Handling: Designed for agile off-road handling, requiring rider skill. Passive Features Protective Gear Recommendation: Manual will implicitly or explicitly require appropriate protective gear (helmet, boots, etc.) for operation. 💡 Technology Features Infotainment System: N/A (Analog instrumentation typical for this era: speedometer, tachometer, odometer). Driver Assistance Features: N/A (No electronic rider aids present). Connectivity Features: N/A 🔧 Maintenance...