🏷️ Basic Information Identification Make: Yamaha Model: WR400F Model Designation: WR400 Years Covered: 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Codes Engine Code Identifier: Likely a 4SP designation for 4-stroke, specific engine code not provided but consistent across years for this model line Chassis Code Identifier: Specific chassis codes vary by year and region but the manual covers the WR400F platform across this range 👋 Introduction Market Position Vehicle Type: Competition Motocross/Enduro Motorcycle Competitive Analysis Key Competitors Era: KTM EXC, Honda CR, Kawasaki KX, Suzuki RM Key Features Manual Value Proposition: Comprehensive, accurate, and detailed technical information for DIY mechanics and professional technicians, enabling cost savings on repairs and maintenance. Digital Manual Advantage: No risk of damage from oil/dirt, ability to print specific sections, instant access Manual Completeness Assurance: Guaranteed to be complete and intact, without missing or corrupt parts/pages. 📋 Manual Details Coverage Areas Coverage Scope: All Models, All Engines, All Trim Types, All Transmission Types Page Count Estimated Page Count: Hundreds of pages (as stated in product description) Manual Type Type: Workshop Repair Service Manual Origin Of Manual: OEM (Original Equipment Manufacturer) equivalent, same manual used in official service/repair shops. Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Covered Systems: General Information, Fuel System, Cooling System, Engine Top End, Clutch, Engine Lubrication System, Engine Removal/Installation, Crankshaft/Transmission, Wheels/Tires, Final Drive, Brakes, Suspension, Steering, Frame, Electrical System, Appendix Electrical System Detail: Includes detailed wiring diagrams, troubleshooting for ignition, lighting, and charging systems. Suspension Details: Covers front forks (likely upside-down telescopic) and rear monoshock suspension, including adjustment and maintenance. Brake System Details: Detailed information on hydraulic brake system components, including fluid replacement, caliper service, and pad replacement. Wheel Tire Final Drive Details: Includes information on wheel bearing maintenance, tire pressure, and chain drive adjustment/lubrication. Procedures Included Included Procedures: Service, Maintenance, Troubleshooting, Repair, Disassembly, Assembly, Cleaning, Reinstalling Procedures, Diagnostic information, Electrical service procedures, Wiring diagrams Engine Rebuild Procedures: Complete procedures for engine top-end rebuild, crankshaft and transmission disassembly/assembly. Troubleshooting Electrical: Specific troubleshooting guides for electrical system faults, often integrated with wiring diagrams. Technical Depth Depth Of Information: Professional-level diagnostic, repair, and maintenance information as used by local service/repair shops; detailed substeps, critical specifications, critical information (notes, cautions, warnings) Diagnostic Capabilities: Comprehensive diagnostics for all major systems, including specific procedures for identifying and resolving faults. 📊 Manual Specifications File Format File Format Details: PDF Searchability: PDF format typically allows for text searching, enhancing usability for finding specific information quickly. Print Quality Printability: Full Printable Zoom Functionality Zoom Capability: YES Delivery Method Delivery: Instant Download Software Requirements Requirements: Adobe PDF Reader, WinZip Compatibility Operating Systems: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: 4-Stroke Engine Displacement: Approximately 396cc (specific bore/stroke not provided, but characteristic of WR400F) Engine Bore Stroke Typical: Typical bore around 84mm and stroke around 70mm for this displacement. Performance Horsepower Estimated: Likely in the 40-45 HP range (typical for this class and era) Torque Estimated: Not specified, but optimized for off-road usability Fuel System Fuel Delivery: Carbureted (likely Mikuni VM series, specific model not provided) Carburetor Considerations: Manual likely details specific carburetor tuning, jetting, and cleaning procedures. Cooling System Cooling Method: Liquid-Cooled 🔧 Transmission Standard Transmission Type: 5-speed constant mesh Optional Optional Transmissions: N/A (standard for this model) Features Clutch Type: Wet, multi-plate 📐 Dimensions Exterior Wheelbase: Varies slightly by year, typically around 1475-1485 mm (58.1-58.5 inches) Ground Clearance: Typically around 330-345 mm (13-13.6 inches) Seat Height: Approximately 960-970 mm (37.8-38.2 inches) Weights Dry Weight: Approximately 115-117 kg (253-258 lbs) Wet Weight: Not specified, but includes fluids 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycles typically do not have NHTSA/Euro NCAP ratings) Active Features Braking System: Hydraulic disc brakes front and rear Passive Features Frame Construction: Steel semi-double cradle frame 💡 Technology Features Infotainment Infotainment Features: N/A (Competition off-road motorcycle, no infotainment systems) Driver Assistance Rider Assistance: Focus on mechanical systems for performance and reliability. No electronic rider aids beyond basic ignition and lighting. Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific mileage/hour recommendations (typically every 10-20 hours of use or 1000-2000 miles for severe off-road use) Air Filter Cleaning: Frequent cleaning/replacement recommended, especially in dusty conditions (refer to manual) Fluid Specifications Engine Oil Type: Yamalube (or equivalent SAE 10W-40 API SG or higher, JASO MA rated motorcycle oil) Coolant Type: Permanent type antifreeze (ethylene glycol base) with distilled water (50/50 mix) Transmission Oil Type: Yamalube (or equivalent SAE 75W API GL-4 or GL-5 gear oil, depending on specific gearbox design) Known Issues Common Wear Items: Clutch wear, spark plug fouling, air filter degradation, potential carburetor jetting issues, valve clearance adjustments Troubleshooting Focus: The manual's troubleshooting section is crucial for addressing performance issues, starting problems, and electrical gremlins. Carburetor Maintenance Focus: The...