Segment:
Lightweight, urban mobility scooter
Target Audience:
Commuters, young riders, urban dwellers seeking practical transportation
Competitors:
Honda Metropolitan, SYM Mio, Kymco Agility 50, Lance Cabo 50
Design:
Distinctive, retro-inspired styling with modern elements
Practicality:
Underseat storage, easy to maneuver in city traffic
Engine:
All aspects of engine disassembly, assembly, inspection, and tuning
Fuel System:
Carburetor tuning, fuel pump, fuel lines, tank maintenance
Ignition System:
Spark plug, ignition coil, CDI unit testing and replacement
Cooling System:
Air cooling system, fan operation, shrouding
Transmission:
CVT (Continuously Variable Transmission) inspection, belt replacement, clutch and variator service
Chassis:
Frame inspection, suspension components, steering system service
Brakes:
Front and rear brake systems, pad replacement, fluid flush, caliper service
Electrical System:
Wiring diagrams, battery maintenance, lighting, starter, charging system, fuses
Bodywork:
Panel removal, installation, cosmetic repair guidance
Wheels Tires:
Tire pressure, inspection, replacement, wheel bearing service
Routine Maintenance:
Oil changes, filter replacement, spark plug checks, general lubrication
Troubleshooting:
Diagnostic procedures for common and uncommon issues, symptom-based troubleshooting
Repair:
Step-by-step instructions for component replacement and repair
Disassembly Assembly:
Detailed guides for taking apart and reassembling major components
Specifications:
Torque specifications, clearances, and critical measurements
Diagnostics:
Electrical system diagnostics, ignition system testing
Depth:
Comprehensive, suitable for professional technicians and advanced DIY enthusiasts
Engine Type:
4-stroke, SOHC, air-cooled, 2-valve
Displacement:
49.4 cc (cc)
Bore X Stroke:
39.0 mm x 41.4 mm
Compression Ratio:
12.0:1
Carburetion:
Mikuni BS20 carburetor
Ignition:
CDI (Capacitor Discharge Ignition)
Starting System:
Electric and Kick Starter
Horsepower:
Approx. 3.1 HP @ 7500 RPM (model dependent)
Torque:
Approx. 2.6 ft-lb @ 6000 RPM (model dependent)
Fuel Tank Capacity:
4.1 L (1.1 US gal)
Fuel Type:
Unleaded gasoline, 87 octane or higher
Engine Oil Change:
Every 3,000 km (1,800 miles) or 6 months
Air Filter Cleaning Replacement:
Inspect every 1,000 km (600 miles), clean/replace as needed
Spark Plug Check Replacement:
Inspect every 3,000 km (1,800 miles), replace as needed
Cvt Belt Inspection Replacement:
Inspect every 5,000 km (3,000 miles), replace per manual recommendations
Engine Oil Type:
Yamaha Genuine Scooter Oil or SAE 10W-40 API SG or higher
Engine Oil Capacity:
0.90 L (0.95 US qt) with oil filter replacement
Brake Fluid Type:
DOT 3 or DOT 4
Common Wear Items:
CVT belt, brake pads, tires, spark plug
Potential Problems:
Carburetor jetting issues in varied altitudes, occasional electrical connection corrosion
Manufacturer:
Yamaha Motor Company, Japan
Introduction Year:
Original Zuma introduced in 2002 (this specific YW50AP likely refers to a later model year, e.g., 2007-2008 generation)
Major Updates:
Second generation (likely this model) received styling updates and chassis revisions.
Assembly Location:
Taiwan (commonly for Zuma models)
