This manual covers the 1999 Scrambler 400 and 500 All-Terrain Vehicles (ATVs). A respected American manufacturer, has a strong heritage in off-road vehicles, and the Scrambler line represents their commitment to performance and capability in the sport ATV segment. These ATVs are known for their robust engineering, offering a balance of power and handling suitable for various off-road terrains. The Scrambler 400, typically powered by a liquid-cooled, 2-stroke engine, and the Scrambler 500, featuring a liquid-cooled, 4-stroke engine, were designed to provide an exhilarating riding experience. This comprehensive workshop service repair manual in English provides detailed instructions and specifications essential for the maintenance, repair, and troubleshooting of your 1999 Scrambler. It covers all major systems, including the engine, transmission, drivetrain, suspension, steering, braking, and electrical systems. Within its pages, you will find step-by-step procedures for routine maintenance, disassembly and reassembly of components, diagnostic guidance for common issues, and critical technical data such as torque specifications and fluid requirements. This manual is an invaluable resource for owners, DIY mechanics, and professional technicians aiming to ensure the optimal performance and longevity of their ATV. 🏷️ Basic Information Identification Make: Polaris Model: Scrambler 400 & 500 Year: 1999 Vehicle Type: All-Terrain Vehicle (ATV) 👋 Introduction Market Position Target Audience: Owners, DIY mechanics, and professional service technicians working on 1999 Polaris Scrambler 400 and 500 ATVs. Competitive Analysis Value Proposition: Provides essential information for maintaining, repairing, and troubleshooting the specific ATV models, saving time and money on professional service. Key Features Content Focus: Detailed procedures, diagrams, troubleshooting guides, and specifications tailored to the 1999 models. 📋 Manual Details Coverage Areas Manual Scope: Complete Workshop Service Repair Page Count Estimated Page Count: High (typically 300+ pages for this type of comprehensive manual) Manual Type Manual Type: Service and Repair Manual Language Language: English Format Format: Downloadable Digital Format (likely PDF) 📖 Manual Coverage Systems Covered Engine System: Complete engine overhaul, top-end, bottom-end, cooling system, lubrication system, fuel system components (carburetor). Transmission Drivetrain: Gearbox, clutch, drive shafts, differential (if applicable), chain/belt drive maintenance and adjustment. Suspension Steering: Front and rear suspension systems, shock absorbers, steering mechanism, tie rods, wheel alignment. Braking System: Hydraulic brake system, brake fluid, calipers, master cylinder, brake lines, pad and shoe replacement. Electrical System: Ignition system, starting system, charging system (stator, regulator/rectifier), lighting, battery, wiring diagrams, troubleshooting. Chassis Bodywork: Frame inspection, body panel removal/installation, seat, fenders, handlebars, controls. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug service, chain lubrication and adjustment, battery care, air filter cleaning/replacement. Troubleshooting: Diagnostic procedures for common performance issues, starting problems, electrical faults, and mechanical failures. Disassembly Reassembly: Detailed step-by-step instructions for major component removal and installation. Specifications Data: Torque values, clearances, fluid capacities, electrical specifications, engine timing. Technical Depth Depth Of Coverage: Comprehensive, covering everything from basic maintenance to in-depth engine rebuilds and electrical diagnostics. 📊 Manual Specifications File Format Digital File Format: PDF (Portable Document Format) Print Quality Image Resolution: High-resolution images and diagrams for clarity. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type 400: Liquid-cooled, 2-stroke, single-cylinder (likely Polaris's own design or a derivative). Engine Type 500: Liquid-cooled, 4-stroke, single-cylinder (likely a Polaris Liberty engine variant). Performance Horsepower 400 Approx: Estimated 30-35 HP Horsepower 500 Approx: Estimated 40-45 HP Fuel System Carburetion 400: Mikuni VM Series carburetor (specific model number required from manual). Fuel Delivery 500: Carburetor (likely Keihin or Mikuni, specific model number required from manual). 🔧 Transmission Standard Transmission Type: Automatic (CVT - Continuously Variable Transmission) with high/low range and reverse. Optional Optional Transmission: N/A (CVT was standard for this model) Features Drive System: 2WD or 4WD (On-Demand) depending on specific sub-model, with shaft drive to front and rear differentials. 📐 Dimensions Exterior Length: Typically around 75-80 inches Width: Typically around 46-48 inches Height: Typically around 45-48 inches Weights Dry Weight Approx: Around 500-550 lbs Ground Clearance Approx: Around 8-10 inches 🛡️ Safety Features Ratings Atv Safety Standards: Adheres to industry safety standards applicable to ATVs for the era. Active Features Braking System Type: Hydraulic disc brakes, front and rear. Passive Features Handlebar Design: Ergonomic handlebar with handguards for protection. 💡 Technology Features Infotainment Infotainment System: Basic controls, no advanced infotainment systems. Driver Assistance Driver Assistance: N/A (ATVs of this era typically lacked advanced driver-assistance features). Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 50-100 operating hours or annually (refer to manual for exact intervals and specific oil type). Gearbox Oil Change: Typically every 100-200 operating hours or annually (refer to manual for exact intervals). Air Filter Cleaning: Recommended every 20-40 operating hours or as needed based on dusty conditions. Fluid Specifications Engine Oil Type 400: 2-stroke oil, specific API TC-W3 rated oil recommended (refer to manual for exact viscosity and brand). Engine...