🏷️ Basic Information

Make:

Yamaha

Model:

Zuma YW50AP

Model Nickname:

Zuma 50

Production Years Covered:

2005, 2006, 2007, 2008, 2009, 2010, 2011

Model Code:

YW50AP

👋 Introduction

Segment:

Compact, lightweight scooter, popular for urban commuting and recreational use.

Competitors:

Honda Metropolitan, Kymco Agility 50, Sym Mio 50, Aprilia Scarabeo 50.

Design:

Rugged, off-road inspired styling with chunky tires and a distinctive front fascia.

Target Audience:

Young riders, urban commuters, those seeking a fun and practical personal transport option.

Purpose:

To provide comprehensive guidance for the maintenance, repair, and servicing of the 2005-2011 Yamaha Zuma YW50AP.

📋 Manual Details

Primary Coverage:

Full Workshop Service and Repair

Secondary Coverage:

Diagnostics, Troubleshooting, Maintenance, Overhaul, Wiring Diagrams

Estimated Page Count:

300+

Type:

Factory Service Manual

Language:

English

Format:

Digital (likely PDF)

📖 Manual Coverage

Engine:

2-stroke, air-cooled, single-cylinder, 49cc engine systems, including fuel, ignition, exhaust, and cooling.

Transmission:

Automatic CVT (Continuously Variable Transmission) system, including clutch, variator, and drive/driven pulleys.

Brakes:

Front and rear brake systems (disc and drum), including hydraulic components, levers, calipers, and pads/shoes.

Electrical:

Complete electrical system, including battery, charging system (stator, rectifier/regulator), starter system, lighting, ignition system, and all wiring harnesses.

Chassis:

Frame, suspension (front forks, rear shock absorber), steering, wheels, and tires.

Bodywork:

Body panels, seat, storage compartments, fuel tank, and instrumentation.

Maintenance:

Regular maintenance checks, oil changes, filter replacements, spark plug service, battery maintenance, brake adjustments.

Troubleshooting:

Comprehensive diagnostic flowcharts and symptom-based troubleshooting for common issues.

Repair:

Step-by-step repair procedures for all major mechanical and electrical components, including engine overhaul, transmission rebuild, and suspension repairs.

Installation:

Procedures for component replacement and installation.

Depth:

Detailed, factory-level technical information suitable for professional technicians and advanced DIY enthusiasts. Covers basic maintenance to complete engine rebuilds and electrical system diagnostics.

📊 Manual Specifications

Digital Format:

PDF (Portable Document Format) - typically searchable and printable.

Illustrations:

High-quality, detailed illustrations and diagrams.

Binding:

N/A (Digital format)

Paper Type:

N/A (Digital format)

⚙️ Engine Specifications

Engine Type:

2-stroke, air-cooled, single-cylinder

Displacement:

49cc

Bore X Stroke:

39.0 mm x 41.4 mm

Compression Ratio:

7.4:1 (approximate, may vary)

Carburetion:

Mikuni VM16SS (or similar Keihin/Mikuni carburetor, specific model in manual)

Horsepower:

Approx. 3.8 HP @ 7,000 RPM (manufacturer dependent, may vary by region/regulations)

Torque:

Approx. 3.0 lb-ft @ 6,500 RPM (manufacturer dependent)

Fuel Type:

Unleaded gasoline, minimum 87 octane

Fuel Tank Capacity:

1.2 US gallons (4.7 L)

Oil Mixture:

Pre-mix or Oil Injection system (specific to YW50AP model, manual will detail this).

🔧 Transmission

Type:

Automatic CVT (Continuously Variable Transmission)

Drive System:

V-belt drive

Gear Ratios:

Variable (determined by CVT operation)

Clutch Type:

Centrifugal automatic clutch

📐 Dimensions

Overall Length:

70.7 in (1795 mm)

Overall Width:

28.3 in (720 mm)

Overall Height:

43.9 in (1115 mm)

Wheelbase:

50.4 in (1280 mm)

Dry Weight:

190 lbs (86 kg)

Wet Weight:

203 lbs (92 kg)

🛡️ Safety Features

Safety Certification:

Meets EPA and CARB standards where applicable for its class.

Braking:

Front: Disc brake. Rear: Drum brake.

Lighting:

Halogen headlight, taillight, brake light, turn signals.

Frame Construction:

Steel tube frame for durability.

Instrumentation:

Speedometer, fuel gauge, odometer, indicator lights.

💡 Technology Features

Display Type:

Analog speedometer, LCD display for fuel level and indicator lights.

Features:

N/A (Basic scooter design, no electronic driver assistance features).

Features:

N/A (No connectivity features).

🔧 Maintenance

Oil Change Engine:

Refer to manual for specific intervals, typically every 1,000-2,000 miles or annually.

Spark Plug Service:

Inspect every 1,000 miles, replace as needed.

Air Filter Cleaning:

Clean or replace every 1,000-2,000 miles, depending on operating conditions.

Transmission Belt Inspection:

Inspect belt wear and condition every 2,000-4,000 miles.

Engine Oil Type:

Yamaha 2-stroke oil or equivalent API TC (Service Category TC) rated oil for oil injection systems. If pre-mix, refer to manual for ratio.

Transmission Oil Type:

Yamalube Gear Oil (or equivalent SAE 10W-30 API GL-4 gear oil).

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Common Wear Items:

Drive belt, clutch shoes, variator rollers, spark plug, air filter, brake pads/shoes.

Carburetor Maintenance:

Carburetor cleaning and jetting adjustments may be required over time, especially with varying fuel quality or modifications.

2 Stroke Considerations:

Proper oil mixture and quality are critical for engine longevity. Carbon buildup in the exhaust and cylinder head can occur.

📚 Vehicle History

Manufacturer:

Yamaha Motor Company, known for innovation in motorcycles, scooters, and marine products.

Zuma Lineage:

The Zuma line is known for its rugged styling and versatility, often bridging the gap between urban scooters and off-road capability.

Yw50Ap Positioning:

The YW50AP represents a specific iteration of the Zuma 50, characterized by its 2-stroke engine and distinctive aesthetic.

Manufacturing Location:

Primarily assembled in Taiwan by Yamaha's manufacturing partners.

🏆 Awards & Recognition

Awards:

While specific awards for this model are not commonly cited, the Zuma line is generally recognized for its durability, practicality, and fun factor in the scooter market.