Yamaha CW50N 1999-2002 Workshop Service Repair Manual

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This manual covers the scooter, produced approximately between 1999 and 2002. As a popular lightweight 50cc scooter, the Jog is recognized for its agile handling, fuel efficiency, and ease of...

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Tipo: Motorcycle

Proveedor:

SKU: 66738

Etiquetas: 1999 2000 2001 2002 CW50N Misc Motorcycle Motorcycles Yamaha

Variantes de producto

Descripción

This manual covers the scooter, produced approximately between 1999 and 2002. As a popular lightweight 50cc scooter, the Jog is recognized for its agile handling, fuel efficiency, and ease of operation, making it an ideal choice for urban commuting and light recreational use. The company's commitment to engineering quality ensures a reliable and durable product within its segment, a characteristic that has defined the Jog family for years. This particular model, identified by chassis code CW50N and engine code 5BM, offers a compact and practical riding experience, embodying the company's reputation for dependable performance. This comprehensive workshop service repair manual provides detailed information essential for the maintenance and repair of your scooter. It covers all critical systems, including the 49cc 2-stroke engine, fuel system, ignition, automatic CVT transmission, cooling, brakes, suspension, and electrical systems. Within its 300+ pages, you will find step-by-step repair instructions, routine maintenance procedures, troubleshooting guides, torque specifications, and clear wiring diagrams. This English-language resource is designed to assist owners, mechanics, and technicians in keeping the scooter in optimal condition, ensuring its longevity and performance.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

CW50N

Model Nickname:

Vehicle Type:

Scooter

Generation

Generation Code:

1st Generation (Approx. 1999-2002)

Codes

Chassis Code Primary:

CW50N

Engine Code Primary:

👋 Introduction

Market Position

Segment:

Lightweight 50cc Scooter segment, popular for urban commuting and light recreational use.

Competitive Analysis

Competitors:

Honda Dio, Suzuki Address, Aprilia SR50, Peugeot Speedfight (depending on market).

Key Features

Vehicle Focus:

Compact size, agile handling, fuel efficiency, ease of operation, and Yamaha's reputation for reliability.

Manual Value Proposition

Benefit:

Cost-effective solution for maintaining optimal performance and longevity of the Yamaha CW50N.

📋 Manual Details

Coverage Areas

Covered Years:

1999, 2000, 2001, 2002

Page Count

Estimated Page Count:

Manual Type

Type:

Workshop Service Repair Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine:

Complete disassembly, assembly, inspection, and repair of the 49cc 2-stroke engine.

Fuel System:

Carburetor inspection, cleaning, adjustment, and troubleshooting; fuel pump operation; fuel tank maintenance.

Ignition System:

CDI ignition system diagnostics, spark plug specifications, stator coil and pulse generator inspection.

Transmission:

Automatic CVT (Continuously Variable Transmission) inspection, belt replacement, clutch and torque converter servicing.

Cooling System:

Air cooling system components and maintenance.

Exhaust System:

Muffler and exhaust pipe inspection and replacement.

Chassis Frame:

Frame inspection, component mounting, and general chassis integrity checks.

Suspension Front:

Telescopic front fork inspection, maintenance, and seal replacement.

Suspension Rear:

Rear shock absorber inspection and replacement.

Brakes Front:

Drum brake adjustment, inspection, and component replacement.

Brakes Rear:

Drum brake adjustment, inspection, and component replacement.

Wheels Tires:

Wheel bearing inspection, tire pressure specifications, and tire replacement.

Electrical System:

Wiring diagrams, battery maintenance, lighting system (headlight, taillight, indicators), horn, and starter system.

Bodywork Cosmetics:

Panel removal and installation, seat, fairings, and storage compartment.

Procedures Included

Maintenance:

Routine checks, lubrication, filter replacement, spark plug replacement, brake adjustment, fluid level checks.

Troubleshooting:

Diagnostic charts for common starting problems, poor performance, electrical issues, and braking concerns.

Repair:

Detailed step-by-step instructions for engine rebuilds, carburetor overhauls, transmission servicing, electrical component replacement, and suspension work.

Disassembly Assembly:

Comprehensive guides for complete vehicle disassembly and reassembly.

Torque Specifications:

Essential torque values for critical fasteners across all systems.

Wiring Diagrams:

Detailed electrical schematics for accurate fault finding and repair.

Technical Depth

Depth:

Comprehensive: Covers everything from basic maintenance to full engine and transmission overhauls, including diagnostics and troubleshooting.

📊 Manual Specifications

File Format

File Type:

Searchability:

Typically text-searchable PDF for easy navigation.

Print Quality

Quality:

High-resolution scans suitable for printing.

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

2-stroke, single-cylinder, liquid-cooled (some variants may be air-cooled, manual will specify)

Displacement:

49.2 cc

Bore X Stroke:

39.0 mm x 41.4 mm

Compression Ratio:

7.4 : 1 (approximate, refer to manual for exact)

Carburetor Model:

Likely a Mikuni VM12 or similar.

Performance

Horsepower:

Approximately 6.5 - 7.0 HP (subject to market regulations and tuning)

Torque:

Approximately 5.5 - 6.0 Nm

Fuel System

Fuel Type:

Unleaded gasoline (min 91 RON)

Fuel Mixture:

Automatic oil injection (premix is not standard)

Fuel Tank Capacity:

Approx. 5.0 Liters

🔧 Transmission

Standard

Type:

Automatic CVT with V-belt drive

Optional

Options:

Features

Clutch:

Centrifugal automatic clutch

Gear Ratios:

Continuously variable, specific ratios managed by variator and clutch engagement.

Transmission Fluid:

No specific transmission fluid for the CVT; belt and roller wear are key maintenance points.

📐 Dimensions

Exterior

Overall Length:

Approx. 1730 mm

Overall Width:

Approx. 675 mm

Overall Height:

Approx. 1045 mm

Wheelbase:

Approx. 1275 mm

Weights

Dry Weight:

Approx. 85 kg

Curb Weight:

Approx. 90 kg (with fluids)

Cargo

Underseat Storage:

Yes, typically accommodates a helmet.

🛡️ Safety Features

Ratings

Crash Test Ratings:

N/A (Scooters are generally not subjected to automotive-style crash testing).

Active Features

Braking:

Front and rear drum brakes for reliable stopping power.

Lighting:

Headlight, taillight, brake light, and turn signals for visibility.

Passive Features

Frame Construction:

Steel frame providing structural integrity.

Ride Stability:

Designed for stable, predictable handling in urban environments.

💡 Technology Features

Infotainment

Features:

Basic instrument cluster with speedometer, odometer, fuel gauge (if equipped), and indicator lights. No advanced infotainment systems.

Driver Assistance

Features:

N/A (No driver-assistance features typical for this era and scooter type).

Connectivity

Features:

N/A (No Bluetooth or mobile connectivity).

🔧 Maintenance

Service Intervals

Oil Change Engine:

Refer to manual; typically every 3,000-5,000 km for 4-stroke, but 2-strokes rely on oil injection system. Check oil reservoir regularly.

Spark Plug Replacement:

Every 5,000 - 10,000 km, depending on plug type and usage. Manual specifies correct type and gap.

Cvt Belt Inspection:

Every 5,000 km; replacement typically between 10,000 - 20,000 km depending on wear.

Air Filter Cleaning Replacement:

Clean every 5,000 km, replace as needed or every 10,000-15,000 km.

Brake Adjustment:

Check and adjust as needed, typically every 5,000 km.

Fluid Specifications

Engine Oil Type:

2-stroke specific, high-quality oil injection type (e.g., Yamalube 2M or equivalent).

Coolant Type:

If liquid-cooled: Ethylene glycol-based antifreeze coolant. Manual specifies type and mixture ratio.

Gear Oil:

Refer to manual for transmission/final drive oil type and capacity (if applicable, some scooters do not have a separate gear oil for the CVT).

Known Issues

Common Problems:

Carburetor gumming due to stale fuel, CVT belt wear, weak starter motor, potential electrical connector corrosion.

Preventative Maintenance Tips:

Regular fuel stabilizer use if storing, checking oil levels frequently, cleaning air filter, ensuring proper electrical connections.

📚 Vehicle History

Brand Heritage

Manufacturer:

Yamaha Motor Corporation, a globally recognized leader in motorcycles, musical instruments, and other motorized products.

Model Evolution

Lineage:

Part of the long-standing and popular Yamaha Jog scooter family, known for its sporty character and reliable performance.

Production

Manufacturing Location:

Primarily manufactured in Japan and other Yamaha global facilities.

Key Production Years:

1999-2002 (for this specific CW50N variant).

🏆 Awards & Recognition

Recognitions

Industry Awards:

N/A (Scooters are rarely recognized with formal industry awards like cars).

Ratings

Reliability Perception:

Generally perceived as a reliable and durable scooter within its class, consistent with Yamaha's reputation.