Segment:
Compact, urban-focused scooter.
Target User:
Commuters, young riders, and those seeking an economical and agile urban transport solution.
Key Competitors:
Honda Metropolitan, Suzuki Address, Kymco Agility.
Design:
Rugged, off-road inspired styling with dual headlights and aggressive stance.
Handling:
Agile and maneuverable for city riding, wider tires for stability.
Benefit To Owner:
Empowers owners to perform maintenance and repairs confidently, saving time and money.
Value Proposition:
Provides factory-level repair information, ensuring correct procedures and specifications.
Engine:
Complete engine assembly, disassembly, tuning, and troubleshooting (including carburetor, ignition, cooling).
Transmission:
Automatic CVT (Continuously Variable Transmission) system inspection, maintenance, and repair.
Fuel System:
Fuel tank, fuel pump, fuel lines, carburetor (including jetting and adjustments).
Electrical System:
Battery, charging system, ignition system, lighting, starter, wiring diagrams.
Brakes:
Front and rear brake systems (hydraulic disc and drum), fluid replacement, pad/shoe replacement.
Suspension:
Front telescopic fork, rear shock absorber inspection, adjustment, and replacement.
Steering:
Handlebar, steering stem, bearings inspection and adjustment.
Chassis And Body:
Frame inspection, body panel removal/installation, seat, storage compartment.
Wheels And Tires:
Tire inspection, replacement, wheel bearing service, wheel mounting.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, fluid level checks, belt inspection.
Troubleshooting:
Diagnostic procedures for common starting, running, and electrical issues.
Major Repairs:
Engine rebuild, transmission overhaul, suspension component replacement.
Electrical Diagnostics:
Utilizing wiring diagrams for fault finding and component testing.
Carburetor Tuning:
Idle speed adjustment, mixture control, main jet and pilot jet selection.
Torque Specifications:
Precise torque values for critical fasteners.
Depth:
Comprehensive, covering everything from basic checks to complete engine and transmission overhauls.
Diagnostic Level:
Advanced, with detailed symptom-based troubleshooting guides.
Engine Type:
4-stroke, Liquid-cooled, SOHC, 2-valve
Bore X Stroke:
39.0 mm x 41.4 mm
Compression Ratio:
12.1:1
Fuel Delivery:
Mikuni VM17 carburetor
Horsepower:
Approx. 4.0 HP @ 7500 RPM (spec may vary slightly by region)
Torque:
Approx. 3.0 lb-ft @ 6000 RPM (spec may vary slightly by region)
Fuel Type:
Unleaded gasoline (minimum 87 octane recommended)
Fuel Tank Capacity:
1.2 gal (4.5 L)
Oil Type:
Yamalube 4 (or equivalent) 10W-40 API SG or higher
Oil Capacity:
0.80 L (0.85 US qt) without filter change, 0.90 L (0.95 US qt) with filter change
Type:
Automatic CVT (Continuously Variable Transmission)
Drive System:
V-belt, automatic centrifugal clutch
Clutch Type:
Dry, centrifugal, automatic
Gear Oil Type:
Yamalube Gear Oil (or equivalent) SAE 80 API GL-4
Gear Oil Capacity:
0.10 L (0.11 US qt)
Crash Safety:
N/A (Scooters not typically subjected to automotive crash testing standards)
Braking:
Responsive hydraulic front disc brake, effective rear drum brake.
Lighting:
Dual halogen headlights for enhanced visibility, LED taillight.
Handling:
Stable chassis and wide tires contribute to predictable handling.
Ergonomics:
Comfortable riding position, accessible controls.
Features:
Basic analog speedometer, odometer, fuel gauge, and indicator lights. No advanced infotainment system.
Features:
No electronic driver assistance features (ABS, traction control are absent on this model).
Features:
No Bluetooth or smartphone connectivity.
Headlights:
Dual 12V 35/35W halogen headlights.
Taillight:
12V 5/21W LED taillight/brake light.
Engine Oil Change:
Every 2,000 km (1,200 miles) or 6 months, whichever comes first.
Air Filter Cleaning/Replacement:
Clean every 2,000 km (1,200 miles), replace as needed.
Spark Plug Replacement:
Inspect every 4,000 km (2,400 miles), replace as needed.
Belt Inspection:
Inspect every 6,000 km (3,600 miles), replace as needed.
Brake Fluid Flush:
Every 2 years or as needed.
Engine Oil Spec:
Yamalube 4 (or equivalent) 10W-40 API SG or higher
Brake Fluid Spec:
DOT 3 or DOT 4
Common Problems:
Carburetor clogging (due to infrequent use or poor fuel quality), weak battery, CVT belt wear over time.
Starting Issues:
The manual provides systematic checks for fuel, spark, and compression.
Manufacturer:
Yamaha Motor Corporation, founded in 1955, is a leading manufacturer of motorcycles, scooters, marine products, and musical instruments.
Zuma Lineage:
The Zuma line, known for its rugged styling and urban versatility, was first introduced by Yamaha in the early 2000s. The 2011 YW50AP represents a refinement of this popular platform.
Manufacturing Location:
Primarily assembled in Taiwan for global markets.
Manufacturer Awards:
Yamaha consistently receives awards for innovation, reliability, and quality across its product lines.
Model Reputation:
The Zuma line is generally well-regarded for its durability and urban practicality.
Emissions Compliance:
Meets EPA and CARB emissions standards for its model year.
