🏷️ Basic Information Identification Make: Suzuki Model: GN400 Engine Type: Four-stroke, SOHC, single-cylinder Engine Displacement: 399 cc (24.3 cu in) Cooling System: Air-cooled Power Method: Belt drive Generation Production Years: 1980-1985 (estimated range, specific year for this manual is not explicitly stated but implied to be within this generation) Codes Vin Designation: Typically starts with 'JS1' for Suzuki 👋 Introduction Market Position Target Audience: Suzuki GN400 owners, independent motorcycle repair shops, DIY enthusiasts with basic mechanical and electrical aptitude. Competitive Analysis Value Proposition: Provides essential technical information that mirrors what professional workshops use, enabling cost savings on repairs and diagnostics. Fills the gap for specialized electrical troubleshooting guidance for this specific model. Key Features Diagnostic Aid: Crucial tool for diagnosing electrical issues, which are often complex and require precise understanding of the wiring layout. Repair Efficiency: Speeds up the repair process by clearly indicating component locations, wire paths, and color codes. Educational Value: Empowers owners with the knowledge to understand and maintain their motorcycle's electrical system, fostering a deeper connection with their machine. 📋 Manual Details Coverage Areas Engine: Complete engine systems, ignition, starting, charging, fuel system, lubrication, cooling. Transmission: Gearbox operation, clutch, internal components. Chassis: Frame, suspension (front and rear), steering, wheels, brakes (front and rear), exhaust system. Electrical System: Full wiring diagram, lighting, battery, starter motor, charging system (alternator/stator, rectifier/regulator), ignition system, switches, instrumentation, horn, starter relay. Page Count Estimated Pages: Variable, typically 20-50 pages for a focused wiring diagram supplement, but can be integrated into a larger service manual. Manual Type Type: Wiring Diagram / Electrical Service Manual Language Language: English (implied by product description and common industry practice for global markets) Format Format: Digital (PDF) - indicated by 'what will be send to you' 📖 Manual Coverage Systems Covered Electrical Components: All electrical components from front to back, including but not limited to: headlight, taillight, turn signals, brake light switch, neutral indicator light, oil pressure warning light, speedometer illumination, tachometer illumination, ignition coil, spark plug, starter solenoid, battery terminals, fuse box, main switch, various relays, wiring harnesses, connectors, ground points. Procedures Included Troubleshooting: Diagnostic procedures for electrical faults, identifying shorts, open circuits, poor connections, and component failures based on the wiring layout. Repair: Guidance on repairing or replacing electrical components, wiring harnesses, connectors, and fuses. Installation: Correct routing and connection of wiring for factory components and potentially aftermarket accessories. Technical Depth Depth: Detailed, allowing for identification of specific wires, their functions, colors, and routing. Includes component identification and terminal locations. Sufficient for basic to intermediate electronic knowledge to understand and perform repairs. 📊 Manual Specifications File Format Digital Format: Portable Document Format (PDF) Searchability: Likely text-searchable if generated from a digital source, enhancing usability for finding specific components or wire colors. Print Quality Print Readability: Designed to be clear and legible when printed, with distinct line work and labeling for diagrams. Binding Type Digital Access: Downloadable file, no physical binding. Paper Type Digital Display: Optimized for digital display on various screen sizes and for printing on standard paper sizes (A4/Letter). ⚙️ Engine Specifications Primary Engine Bore X Stroke: 74.0 mm x 77.0 mm (approximate, common for 400cc singles of the era) Compression Ratio: 9.0:1 (typical for this engine family) Ignition System: CDI (Capacitor Discharge Ignition) with electronic advance (typical for this era) Performance Horsepower: Approx. 25-30 HP at 6,000-7,000 RPM (estimated, performance varied by tuning and market) Torque: Approx. 23-26 lb-ft at 4,000-5,000 RPM (estimated) Fuel System Carburetion: Single Mikuni VM34SS carburetor (common specification) Fuel Type: Unleaded gasoline Fuel Capacity: 17 Liters (approx. 4.5 US gallons) 🔧 Transmission Standard Type: 5-speed constant mesh Clutch: Wet multi-plate Features Final Drive: Chain drive (though some models had belt drive, the product description mentions belt drive for power, which is unusual for GN400; this might be a misstatement or refer to a specific variant. Standard GN400 used chain drive.) Gear Ratios: Specific ratios not detailed here, but typical for a cruiser/standard motorcycle of its displacement. 📐 Dimensions Exterior Length: Approx. 2200 mm (86.6 in) Width: Approx. 800 mm (31.5 in) Height: Approx. 1150 mm (45.3 in) Weights Dry Weight: Approx. 170 kg (375 lbs) Gross Vehicle Weight Rating: Not specified, but typical for the class. 🛡️ Safety Features Ratings Crash Test Data: Not applicable to motorcycles of this era. Active Features Braking System Front: Disc brake Braking System Rear: Drum brake Passive Features Lighting System: Halogen headlight, incandescent taillight and turn signals (standard for the era). 💡 Technology Features Infotainment System: Not applicable. This is a classic motorcycle with purely functional instrumentation. Driver Assistance Features: None. Focus is on mechanical and electrical systems. Connectivity Features: None. 🔧 Maintenance Service Intervals Oil Change: Every 3,000 km (1,800 miles) or 6 months Air Filter Cleaning: Every 6,000 km (3,600 miles) Spark Plug Replacement: Every 12,000 km (7,200 miles) Valve Clearance Check:...