🏷️ Basic Information

Make:

Yamaha

Model:

Zuma 50

Model Code:

YW50AP

Generation Identifier:

First Generation (2002-2005)

Product Code Identifier:

YW50AP

👋 Introduction

Vehicle Segment:

Commuter Scooter / Lightweight Motorcycle

Target Demographic:

Urban commuters, younger riders, individuals seeking an economical and practical form of transportation

Key Competitors Era:

Honda Ruckus, Kymco Agility 50, SYM Jet 50, Aprilia Scarabeo 50

Vehicle Design Philosophy:

Rugged, utilitarian design with a focus on reliability and ease of use for urban environments

Manual Value Proposition:

Empowers owners and technicians to perform all necessary maintenance and repairs, reducing reliance on dealerships and saving costs.

📋 Manual Details

Covered Model Years:

2002, 2003, 2004, 2005

Covered Variants:

YW50AP (all configurations within the specified years)

Estimated Page Count:

400+

Manual Classification:

Factory Service Repair Workshop Manual

Language:

English

Digital Format:

PDF

📖 Manual Coverage

Powertrain:

Engine, fuel system, exhaust system, transmission (CVT), final drive

Chassis:

Frame, suspension (front and rear), steering, brakes (front and rear), wheels, tires

Electrical:

Ignition system, lighting, instrumentation, battery, charging system, starting system, wiring diagrams

Bodywork:

Body panels, fairings, seat, storage compartment, trim

Maintenance:

Oil changes, filter replacements, spark plug service, coolant checks, chain/belt inspection and adjustment, brake adjustments

Troubleshooting:

Diagnostic procedures for engine, electrical, and mechanical issues with symptom-based flowcharts

Repair:

Engine overhaul, transmission rebuild, brake system repair, suspension component replacement, electrical component diagnosis and repair

Disassembly Reassembly:

Step-by-step instructions for removing and installing all major components and sub-assemblies

Depth Of Coverage:

Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds

Diagnostic Capabilities:

Detailed diagnostic charts and procedures for identifying and resolving common and uncommon faults

Specifications And Tolerances:

Includes all necessary torque specifications, clearances, fluid capacities, and wear limits

📊 Manual Specifications

PDF Quality:

High-resolution, searchable text, allowing for easy navigation and printing

File Type:

Adobe Acrobat PDF (.pdf)

Printable Pages:

Designed for easy printing of individual pages or sections

Binding Method:

N/A (Digital PDF format)

Paper Recommendation:

N/A (Digital PDF format - user choice for printing)

⚙️ Engine Specifications

Engine Type:

Four-stroke, liquid-cooled, SOHC, 2-valve, single-cylinder

Displacement:

49.7 cc

Bore X Stroke:

39.0 mm x 41.4 mm

Compression Ratio:

12.0:1

Horsepower Estimate:

Approx. 4.0-4.5 HP @ 7500 RPM (stock)

Torque Estimate:

Approx. 3.0-3.2 lb-ft @ 6000 RPM (stock)

Fuel Delivery:

Carburetor (Mikuni VM17SH or similar)

Fuel Type:

Unleaded gasoline, 87 octane (minimum)

Fuel Tank Capacity:

1.0 US gallon (3.8 L)

Oil Type:

Yamalube 4 (or equivalent SAE 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

Ignition System:

CDI (Capacitor Discharge Ignition)

Spark Plug Type:

NGK CR7HSA or DENSO U22FSR-U

Cooling System:

Liquid-cooled

Coolant Type:

Yamaha Super Coolant (or equivalent ethylene glycol based antifreeze with corrosion inhibitors)

🔧 Transmission

Transmission Type:

Automatic CVT (Continuously Variable Transmission)

Optional Transmissions:

N/A (CVT is standard)

Final Drive:

Gear drive

Final Drive Oil Type:

Yamalube Gear Oil (or equivalent SAE 80 API GL-4)

Final Drive Oil Capacity:

0.10 L (0.11 US qt)

📐 Dimensions

Length:

1,855 mm (73.0 in)

Width:

735 mm (28.9 in)

Height:

1,075 mm (42.3 in)

Wheelbase:

1,305 mm (51.4 in)

Ground Clearance:

125 mm (4.9 in)

Dry Weight:

85 kg (187.4 lbs)

Wet Weight:

Approx. 91 kg (200.6 lbs)

Maximum Load:

N/A (Refer to owner's manual or local regulations)

🛡️ Safety Features

Crash Test Ratings:

N/A (Motorcycles/scooters typically not subject to automotive crash testing standards)

Braking System Front:

Hydraulic disc brake

Braking System Rear:

Drum brake

Lighting:

Halogen headlight, LED taillight/brake light, turn signals

Frame Construction:

Steel tube underbone frame

Seat Design:

Dual-seat design for rider and passenger

💡 Technology Features

Infotainment Systems:

N/A (Basic scooter design, no infotainment)

Driver Assistance Features:

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

Connectivity Features:

N/A (Basic scooter design, no connectivity)

Instrument Cluster:

Analog speedometer, fuel gauge, odometer, trip meter, indicator lights (turn signals, high beam, oil level)

🔧 Maintenance

Engine Oil Change Interval:

Every 3,000 km (1,860 miles) or 6 months, whichever comes first

Air Filter Cleaning Interval:

Every 2,000 km (1,240 miles) or 3 months

Spark Plug Replacement Interval:

Every 10,000 km (6,200 miles) or 12 months

Belt Inspection Interval:

Every 6,000 km (3,700 miles) or 12 months

Engine Oil Specification:

Yamalube 4 (or equivalent SAE 10W-40 API SG or higher)

Coolant Specification:

Yamaha Super Coolant (or equivalent ethylene glycol based antifreeze with corrosion inhibitors)

Brake Fluid Specification:

DOT 3 or DOT 4 hydraulic brake fluid

Common Wear Items:

Drive belt, brake pads/shoes, tires, spark plug, air filter

Potential Electrical Issues:

Loose connections, failing regulator/rectifier (though less common on this specific model than earlier two-strokes)

Potential Engine Issues:

Carburetor gumming if fuel sits for extended periods, potential valve adjustment needs

📚 Vehicle History

Manufacturer Heritage:

Yamaha Motor Company, Ltd. is a Japanese manufacturer with a long-standing reputation for producing high-quality motorcycles, scooters, and musical instruments. Founded in 1955.

Zuma Lineage:

The Zuma 50 (YW50) was introduced in the US market, building on Yamaha's experience with practical and durable scooters. The YW50AP represents the initial generation, characterized by its distinctive rugged styling and utility.

Production Period:

2002-2005 (for YW50AP model code)

Manufacturing Location:

Likely manufactured in Japan or by a Yamaha subsidiary.

🏆 Awards & Recognition

Model Specific Awards:

N/A (Specific awards for this model generation are not prominently documented)

Consumer Reputation:

Generally regarded as a reliable and durable scooter with good urban performance and a distinctive style.

Emissions Standards:

Meets EPA and California ARB emissions standards for its model year.