Welcome to the comprehensive workshop service repair manual for the Yamaha CW50M, also known as the Jog, from the first generation. Produced between 1999 and 2002, this popular lightweight scooter is celebrated for its reliability and suitability for urban commuting. Featuring a 49 cc two-stroke, air-cooled engine, automatic CVT transmission, and a front disc brake with a rear drum brake, the CW50M offers a practical and enjoyable riding experience. Its robust steel tube frame and under-seat storage further enhance its utility, making it a dependable choice for daily transportation. This manual serves as an essential resource for owners, maintenance technicians, and repair shops. It provides detailed coverage of all major mechanical and electrical systems, including complete engine overhaul procedures, fuel system adjustments, cooling system maintenance, electrical system diagnostics, transmission servicing, suspension and brake system repairs, and chassis and bodywork. With step-by-step instructions, torque specifications, and troubleshooting guides for common issues such as carburetor clogging and variator wear, this manual ensures you have the necessary information to maintain and repair your Yamaha Jog effectively. 🏷️ Basic Information Identification Make: Yamaha Model: CW50M Model Nickname: Jog Body Style: Scooter Generation Generation: First Generation Codes Chassis Code: SA01J 👋 Introduction Market Position Target Audience: Owners, maintenance technicians, and repair shops working on Yamaha CW50M scooters. Competitive Analysis Value Proposition: Provides in-depth technical information for maintaining and repairing the CW50M, offering a cost-effective alternative to dealership servicing. Key Features Completeness: Covers all major mechanical and electrical systems for the specified model years. Usability: Organized with clear headings, diagrams, and step-by-step instructions for ease of use. 📋 Manual Details Coverage Areas Covered Years: 1999, 2000, 2001, 2002 Page Count Page Count: N/A (Digital PDF) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Overhaul: Complete rebuild procedures, torque specifications, component identification. Fuel System: Carburetor adjustment, fuel pump, fuel tank, fuel lines. Cooling System: Radiator, fan, coolant specifications, bleeding procedures. Electrical System: Wiring diagrams, ignition system, charging system, lighting, starter motor. Transmission: Automatic transmission (CVT), variator, clutch, gear reduction. Suspension: Front fork, rear shock absorber, bearings. Brakes: Front disc brake, rear drum brake, hydraulic system, adjustments. Chassis And Body: Frame, body panels, seat, storage compartment, fairings. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, brake adjustments. Troubleshooting: Diagnostic charts for common starting, running, and electrical issues. Repair Procedures: Step-by-step instructions for component removal, installation, and adjustment. Overhaul Instructions: Detailed guidance for engine and transmission rebuilds. Technical Depth Depth: Comprehensive (suitable for professional mechanics and advanced DIY users). Diagnostic Capabilities: Detailed troubleshooting flowcharts and symptom-based diagnostics. 📊 Manual Specifications File Format File Type: PDF Searchability: Text-searchable content for quick information retrieval. Print Quality Image Resolution: High-resolution images and diagrams for clarity. Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 2-stroke, air-cooled Displacement: 49 cc Bore X Stroke: 39.0 mm x 41.4 mm Compression Ratio: 7.4:1 Performance Horsepower: Approximately 4.5 - 5.0 PS (varies by market and tuning) Torque: Approximately 3.8 - 4.0 Nm (varies by market and tuning) Fuel System Carburetor Model: Mikuni VM12 Fuel Type: Unleaded gasoline Fuel Mixture: Pre-mix or automatic oil injection system (depending on specific variant). Lubrication Oil Type: 2-stroke engine oil (e.g., Yamalube 2-stroke oil) Ignition Ignition System: CDI (Capacitor Discharge Ignition) Engine Codes Engine Code: SA01 🔧 Transmission Standard Transmission Type: Automatic Continuously Variable Transmission (CVT) Features Clutch Type: Centrifugal automatic clutch Drive System: V-belt drive Gear Ratios Reduction Gear Ratio: 8.571 (typical) Fluid Specifications Gear Oil Type: Yamaha Gear Oil 10W-30 (or equivalent) 📐 Dimensions Exterior Overall Length: Approx. 1,730 mm Overall Width: Approx. 675 mm Overall Height: Approx. 1,035 mm Weights Dry Weight: Approx. 73 kg Seat Height: Approx. 740 mm Wheelbase: Approx. 1,210 mm Cargo Storage: Under-seat storage compartment 🛡️ Safety Features Ratings Crash Safety: N/A (Scooter classification, not subject to automotive crash testing standards) Active Features Braking System: Front disc brake with hydraulic actuation, rear drum brake with mechanical actuation. Lighting: Headlight, taillight, brake light, turn signals. Passive Features Frame Construction: Steel tube frame for structural integrity. Tires: Tubeless tires for reduced risk of sudden deflation. 💡 Technology Features Infotainment Instrument Cluster: Analog speedometer, fuel gauge, turn signal indicators, high-beam indicator. Driver Assistance ABS: N/A Connectivity Smartphone Integration: N/A 🔧 Maintenance Service Intervals Engine Oil Change: Every 1,000 km or 6 months, whichever comes first. Air Filter Cleaning: Every 1,000 km. Spark Plug Check: Every 2,000 km, replace as needed. Transmission Oil Change: Every 5,000 km or 12 months, whichever comes first. Brake Fluid Check: Every 6,000 km or 12 months. Fluid Specifications Engine Oil Capacity: Approximately 0.7 Liters (for 2-stroke oil injection). Gear Oil Capacity: Approximately 0.08 Liters. Coolant Type: Yamaha Coolant (50% ethylene glycol and 50% deionized water)....