Basic Information Identification Make: Yamaha Model: Zuma Model Code: YW50AP Chassis Code: YW50AP Generation Generation Designation: First Generation Codes Engine Family: A159E Introduction Market Position Segment: Compact scooter, popular for urban commuting and recreational use. Competitive Analysis Competitors: Honda Metropolitan, Vespa S 50, Kymco Agility 50, Lance PCH 50. Key Features Design: Rugged styling, under-seat storage, dual headlights, and durable construction. Target Audience: Young riders, urban dwellers, those seeking an economical and reliable mode of transport. Manual Value Purpose: Empowers owners and technicians to perform all necessary maintenance and repairs, ensuring longevity and optimal performance. Manual Details Coverage Areas Applicable Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011 Page Count Estimated Pages: 300+ Manual Type Manual Type: Full Service Repair Manual Language Language: English Format Format: PDF Download Manual Coverage Systems Covered Engine: Comprehensive engine repair, overhaul, diagnostics, and tuning procedures for the 49cc 2-stroke engine. Transmission: Detailed information on the V-belt automatic transmission (CVT), clutch, and final drive assembly maintenance and repair. Fuel System: Carburetor adjustment, cleaning, fuel pump, fuel lines, and fuel tank service procedures. Electrical System: Ignition system, lighting, starting system, charging system (stator, battery), wiring diagrams, and component testing. Chassis And Suspension: Front forks, rear shock absorber, steering system, wheel bearing, and tire service. Brakes: Front and rear brake system maintenance, including hydraulic lines, brake fluid, brake pads/shoes replacement, and caliper/drum service. Cooling System: Air cooling system inspection and maintenance. Exhaust System: Exhaust pipe and muffler inspection and replacement. Bodywork And Trim: Panel removal, installation, and general bodywork maintenance. Procedures Included Routine Maintenance: Oil changes, spark plug replacement, air filter cleaning/replacement, transmission oil check/change, brake inspection. Troubleshooting: Systematic diagnostic procedures for common problems, including no-start conditions, poor performance, and electrical faults. Disassembly And Assembly: Step-by-step instructions for complete engine and component overhaul, including torque specifications. Adjustments: Carburetor idle speed and mixture adjustment, throttle cable adjustment, brake lever adjustment. Rebuilding: Complete engine rebuild instructions, including piston, cylinder, crankshaft, and seal replacement. Technical Depth Depth Level: Comprehensive, covering everything from basic owner maintenance to complete engine rebuilds and electrical system diagnostics. Manual Specifications File Format File Type: Portable Document Format (PDF) Print Quality Printability: High-resolution, printable pages for easy reference in a workshop environment. Binding Type Binding Suitability: Ideal for printing and binding into a workshop manual binder. Paper Type Recommended Paper: Standard printer paper (8.5" x 11" or A4) Searchability Text Search: Searchable text for quick information retrieval. Engine Specifications Primary Engine Engine Type: 2-stroke, air-cooled Displacement: 49cc Bore X Stroke: 39.0 mm x 41.4 mm Compression Ratio: 7.2:1 Horsepower Hp: Approx. 4.3 HP @ 6500 RPM Torque Lb-Ft: Approx. 3.3 lb-ft @ 6000 RPM Fuel System Fuel Delivery: Mikuni VM16SH carburetor Fuel Type: Unleaded gasoline (minimum 87 octane) Fuel Tank Capacity: 1.2 US gal (4.5 L) Lubrication Oil Type: 2-stroke engine oil (Yamalube 2-stroke or equivalent) Oil System: Autolube (oil injection system) Transmission Standard Transmission Type: Automatic (CVT - Continuously Variable Transmission) Drive Type: V-belt Final Drive: Gear reduction Features Clutch Type: Centrifugal automatic clutch Fluid Specifications Gear Oil Type: Yamaha Gear Oil (or equivalent SAE 80 hypoid gear oil) Fluid Capacity Gear Oil Capacity: 0.12 L (0.13 US qt) Dimensions Exterior Overall Length: 1750 mm (68.9 in) Overall Width: 660 mm (26.0 in) Overall Height: 1030 mm (40.6 in) Seat Height: 740 mm (29.1 in) Wheelbase: 1275 mm (50.2 in) Weights Dry Weight: 82 kg (181 lb) Curb Weight: 85 kg (187 lb) Tires Front Tire Size: 120/90-10 Rear Tire Size: 130/90-10 Wheels Wheel Type: Cast aluminum Safety Features Ratings Safety Certifications: DOT, EPA, CARB (where applicable) Active Features Lighting: Halogen headlight, taillight, brake light, turn signals. Passive Features Frame Construction: Steel underbone frame for rigidity. Braking System Front Brake Type: Drum brake Rear Brake Type: Drum brake Technology Features Infotainment Instrument Cluster: Analog speedometer, odometer, fuel gauge, turn signal indicators, oil warning light. Driver Assistance None: Basic scooter with no advanced driver assistance systems. Connectivity None: No Bluetooth or smartphone connectivity features. Maintenance Service Intervals Initial Service: Recommended at 600 miles (1,000 km) or 1 month. Regular Maintenance: Every 2,000 miles (3,000 km) or 6 months, with more frequent checks for high-usage conditions. Engine Oil Change: Recommended every 1,000 miles (1,500 km) or 6 months for the gearbox. Spark Plug Replacement: Inspect every 1,000 miles (1,500 km), replace as needed or every 2,000 miles (3,000 km). Air Filter Cleaning: Clean every 1,000 miles (1,500 km), replace as needed. Fluid Specifications Engine Oil Type: Yamaha Premium 2-Stroke Super & Multi-Use Performance Oil (Yamalube 2) or equivalent JASO FD, API TC rated 2-stroke oil. Gear Oil Spec: SAE 80 hypoid gear oil (e.g., Yamalube Gear Oil). Brake Fluid Type: DOT 3 or DOT 4 hydraulic brake fluid. Known Issues Common Wear Items: Drive belt, brake pads/shoes, spark plug, air filter, battery. Carburetor Tuning: Can require periodic...