🏷️ Basic Information

Make:

Yamaha

Model:

Jog CS50

Year:

2002

Vehicle Type:

Motorcycle (Scooter)

Engine Code:

G311E (typical for this era Jog 50)

Chassis Code:

SA02J (common for the Jog CS50)

👋 Introduction

Market Segment:

Lightweight, urban-focused scooter, popular for its practicality, fuel efficiency, and ease of use.

Competitors:

Honda Dio, Suzuki Address, Kawasaki KSR (in spirit, though different class), other 50cc scooters of the era.

Vehicle Appeal:

Compact size, agile handling, reliable two-stroke engine, low running costs, ideal for commuting and city riding.

Manual Benefit:

Empowers owners to perform maintenance and repairs themselves, saving on dealership costs and ensuring proper upkeep of their investment.

📋 Manual Details

Languages:

English

Page Count:

300+

Manual Type:

Service & Repair Manual

Format:

PDF (Digital Download)

📖 Manual Coverage

Engine Systems:

Engine overhaul, lubrication, cooling, fuel delivery, ignition system, exhaust system, starting system, carburetor tuning.

Transmission Drivetrain:

Automatic Continuously Variable Transmission (CVT) service, belt replacement, clutch operation, final drive maintenance.

Chassis Suspension:

Front fork overhaul, rear shock absorber replacement, frame inspection, steering system.

Braking System:

Front and rear brake service (drum/disc depending on specific model variant), hydraulic system, brake pad/shoe replacement.

Electrical System:

Wiring diagrams, lighting system, battery, charging system (stator/rectifier), starter motor, fuses, switches, electronic components.

Bodywork Fixtures:

Body panel removal/installation, seat, handlebars, controls, lighting fixtures, storage compartment.

Maintenance Procedures:

Routine inspections, oil changes, air filter cleaning/replacement, spark plug replacement, brake adjustments, tire pressure checks, drive belt inspection.

Troubleshooting Diagnostics:

Step-by-step diagnostic procedures for common starting, running, and electrical issues, fault finding charts.

Repair Overhaul:

Detailed instructions for engine teardown and reassembly, carburetor rebuilding, suspension component replacement, electrical component repair.

Specifications Data:

Torque specifications for all fasteners, fluid capacities, electrical resistance values, engine timing data.

Depth Level:

Comprehensive, covering everything from basic scheduled maintenance to complete engine and component overhauls, suitable for DIY mechanics and professional technicians.

📊 Manual Specifications

File Format Details:

Searchable PDF, allowing easy navigation and keyword searching. High-resolution scans for clear diagrams and text.

Print Quality:

Printable on standard home or office printers. Clear black and white line drawings and schematics.

Binding Type:

N/A (Digital PDF)

Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Type:

Two-stroke, single-cylinder, reed valve induction

Displacement:

49cc

Bore X Stroke:

37.0 mm x 42.0 mm (typical for this engine)

Cooling System:

Forced air cooling

Compression Ratio:

7.0:1 (approximate)

Ignition System:

CDI (Capacitor Discharge Ignition)

Horsepower:

Approx. 4.5 - 5.0 PS @ 6,500 RPM (varies by market regulations)

Torque:

Approx. 0.45 kgf-m @ 6,000 RPM (varies by market regulations)

Fuel Delivery:

Carburetor (Mikuni VM12 type common)

Fuel Type:

Unleaded gasoline (RON 91 or higher recommended)

Fuel Tank Capacity:

4.0 Liters (approx.)

Oil Type:

API TC, JASO FB or FD certified 2-stroke scooter oil

Oil Mixing:

Automatic oil injection system

🔧 Transmission

Transmission Type:

Automatic (CVT - Continuously Variable Transmission)

Clutch Type:

Centrifugal clutch

Final Drive:

Gear reduction

Cvtf Fluid Type:

Not applicable (CVT uses belt and variator, no specific fluid)

📐 Dimensions

Length:

Approx. 1,675 mm

Width:

Approx. 665 mm

Height:

Approx. 1,035 mm

Wheelbase:

Approx. 1,205 mm

Ground Clearance:

Approx. 115 mm

Dry Weight:

Approx. 73 kg

Curb Weight:

Approx. 76 kg

Front Tire Size:

3.00-10 42J

Rear Tire Size:

3.00-10 42J

Front Brake Type:

Drum or Disc (depending on variant)

Rear Brake Type:

Drum

🛡️ Safety Features

Safety Ratings:

N/A (Consumer-level scooters are not typically crash-tested or rated by agencies like NHTSA or Euro NCAP. Safety relies on design and rider awareness.)

Lighting:

Headlight, taillight, brake light, turn signals, position lights.

Chassis Design:

Underbone frame construction providing rider leg protection.

Mirrors:

Dual rearview mirrors for visibility.

💡 Technology Features

Infotainment System:

Basic analog speedometer, odometer, fuel gauge (if equipped), indicator lights. No advanced electronic infotainment systems.

Driver Assistance:

None (basic scooter design).

Connectivity Features:

None.

🔧 Maintenance

Engine Oil Change:

Every 3,000 km or annually, whichever comes first.

Air Filter Cleaning:

Every 1,000 km, or more frequently in dusty conditions.

Spark Plug Replacement:

Every 6,000 km or as per inspection.

Drive Belt Inspection:

Every 5,000 km for wear and tension.

Gear Oil Change:

Every 6,000 km or annually.

Engine Oil Specification:

Yamalube 2 Stroke (or equivalent API TC, JASO FB/FD rated)

Gear Oil Specification:

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

Brake Fluid Type:

DOT 3 or DOT 4 (if equipped with disc brakes)

Common Wear Items:

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

Carburetor Issues:

Clogged jets or pilot circuits due to fuel deposits, requiring cleaning and adjustment.

Electrical Concerns:

Corrosion in connectors, aging wiring, failing rectifier/regulator can lead to charging issues.

📚 Vehicle History

Manufacturer Origin:

Japan

Brand Focus:

Yamaha is renowned for its musical instruments and powersports vehicles, with a strong legacy in motorcycles.

Jog Lineage:

The Jog series has been a staple in Yamaha's scooter lineup for decades, known for its consistent evolution in design and technology while retaining its core principles of urban mobility.

2002 Model Context:

Represents a mature iteration of the CS50 platform, refined for performance and reliability in its class.

Production Period:

The Jog CS50 platform has seen production across many years, with the 2002 model falling into the early 2000s generation.

🏆 Awards & Recognition

Model Awards:

N/A (As a 50cc scooter, the Jog CS50 typically does not receive formal industry awards. Its success is measured by sales and popularity in its segment.)

Consumer Ratings:

Generally positive for reliability and ease of use within its class, though performance is limited by its engine size.