🏷️ Basic Information Identification Make: Yamaha Model: TT350 Year: 1990 Engine Type: 4-stroke, Single Cylinder, SOHC, 4-valve Codes Chassis Code: 48X Engine Code: 48X 👋 Introduction Market Position Vehicle Segment: Dual-sport/Enduro motorcycle. Target Audience: Off-road enthusiasts, dual-sport riders, adventure seekers. Competitive Analysis Key Competitors Era: Honda XR series, Kawasaki KLR series, Suzuki DR series, KTM EXC series. Key Features Manual Value Proposition: Provides comprehensive diagnostic and repair information to empower owners for self-maintenance and problem-solving. Vehicle Key Selling Points: Reliable 4-stroke engine, robust chassis for off-road capability, suitable for both trail riding and light street use. 📋 Manual Details Coverage Areas Systems Covered: General Information, Specifications, Periodic Inspections and Adjustment, Engine Overhaul, Carburetion, Chassis, Electrical, Appendices Page Count Page Count: Unknown (Digital Format) Manual Type Manual Type: Factory Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed overhaul procedures for the entire engine, including cylinder head, valves, pistons, crankshaft, and lubrication system. Fuel System: Comprehensive information on the carburetor (likely a VM series Mikuni), including disassembly, cleaning, adjustment, and troubleshooting. Ignition System: Details on the CDI ignition system, including component testing, timing adjustments, and troubleshooting. Electrical System: Wiring diagrams, troubleshooting guides for lighting, charging system (stator and regulator/rectifier), and starting system. Chassis Suspension: Information on front forks (likely telescopic with adjustable damping) and rear monoshock suspension, including seal replacement and oil levels. Braking System: Procedures for front and rear brake systems (likely disc brakes), including caliper overhaul, pad replacement, and fluid bleeding. Wheel And Tires: Information on wheel bearing maintenance, tire pressure recommendations, and likely spoke maintenance for off-road wheels. Bodywork And Frame: Details on body panel removal, frame inspection, and potentially seat and fuel tank mounting. Maintenance Schedules: Periodic inspection and adjustment recommendations for key components. Procedures Included Engine Rebuild: Complete step-by-step instructions for engine disassembly, component inspection, repair, and reassembly. Carburetor Tuning: Guidance on jetting, idle speed adjustment, and mixture control for optimal performance. Fork Seal Replacement: Detailed instructions for disassembling front forks and replacing worn oil seals. Brake Bleeding: Correct procedures for removing air from the hydraulic brake lines. Electrical Troubleshooting: Systematic approaches to diagnosing electrical faults using wiring diagrams and test procedures. Valve Adjustment: Procedures for checking and adjusting valve clearances. Chain And Sprocket Maintenance: Information on chain tension adjustment and sprocket wear inspection. Technical Depth Diagnostic Capabilities: Advanced diagnostic procedures for identifying and resolving complex mechanical and electrical issues. Repair Complexity: Covers everything from routine maintenance to complete engine and chassis rebuilds. Diagrams And Illustrations: Likely includes exploded views and detailed diagrams to aid in disassembly and reassembly. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Searchability: Searchable text content within the PDF document. Zoom Functionality: Supports zoom in/out functionality for detailed viewing. Platform Compatibility: Compatible with all versions of Windows and Mac operating systems. Device Compatibility: Usable on smartphones and tablets with PDF reader applications. Extraction Requirements: Requires WinZip or equivalent for extraction if compressed. Reader Requirement: Adobe PDF Reader or compatible software. Print Quality Print Readability: Designed for clear and legible printing of all content. Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Family: Yamaha 48X Single Cylinder Displacement: 347 cc (approx.) Bore X Stroke: 72.0 mm x 84.5 mm (approx.) Compression Ratio: 9.5:1 (approx.) Valve Train: SOHC, 4 valves Performance Horsepower Estimated: Approx. 30-35 HP (at crankshaft) Torque Estimated: Approx. 20-23 lb-ft (at crankshaft) Fuel System Carburetor Type: Mikuni VM Series (likely VM34 or similar) Fuel Capacity: 2.6 US gal (9.8 L) Fuel Type: Unleaded gasoline (minimum 87 octane recommended) Fuel Injection System: N/A (This model features carburetion, not fuel injection) Lubrication Oil Type: SAE 10W-30 or 20W-40 API SE, SF, or SG classification motorcycle oil Oil Capacity With Filter: 1.70 US qt (1.6 L) 🔧 Transmission Standard Transmission Type: 5-speed constant mesh Features Clutch Type: Wet, multiple-disc Final Drive: Chain drive Transmission Oil Type: Yamalube SAE 80 or equivalent API GL-4 gear oil Transmission Oil Capacity: 0.70 US qt (0.65 L) 📐 Dimensions Exterior Overall Length: Approx. 85.4 in (2170 mm) Overall Width: Approx. 34.3 in (870 mm) Overall Height: Approx. 47.0 in (1195 mm) Seat Height: Approx. 36.0 in (915 mm) Weights Dry Weight: Approx. 262 lbs (119 kg) Wet Weight: Approx. 287 lbs (130 kg) Gross Vehicle Weight Rating: Not specified, but consider rider and cargo weight. Wheels And Tires Front Tire Size: 80/100-21 51P Rear Tire Size: 110/90-18 61P Front Wheel Type: Spoked Rear Wheel Type: Spoked Wheelbase: Approx. 56.3 in (1430 mm) Ground Clearance: Approx. 11.8 in (300 mm) 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycle safety ratings are not typically provided in the same manner as automobiles). Active Features Braking System: Front and rear disc brakes for effective stopping power. Suspension Performance:...