🏷️ Basic Information

Make:

Yamaha (MBK)

Model:

CS50/Z Jog

Year:

2002

Product Type:

Service Repair Manual

Model Code Cs50:

CS50

Model Code Jog Z:

CS50/Z

👋 Introduction

Segment:

50cc scooter, entry-level urban mobility.

Target Demographic:

Young riders, commuters, those seeking economical and nimble transportation.

Key Competitors:

Honda Dio, Suzuki Address, Aprilia SR50 (though often higher-spec), Peugeot Kisbee.

Mbk Usp:

Renowned for Yamaha's reliable two-stroke engine technology, sporty styling, and agile handling characteristic of the Jog lineage.

Design Philosophy:

Sporty aesthetics with practicality for urban environments.

Engine Type Heritage:

Leverages Yamaha's long history and expertise in developing high-performance, compact two-stroke scooter engines.

📋 Manual Details

Primary Markets:

Europe, Asia

Specific Regions:

Covers specifications and procedures relevant to models sold in various international markets, including variations specific to European and Asian regulations.

Total Pages:

300+

Type:

Comprehensive Service and Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine:

Complete overhaul, disassembly, assembly, tuning, carburetor, fuel system, ignition system, lubrication.

Transmission:

Automatic CVT (Continuously Variable Transmission) maintenance, belt inspection and replacement, clutch operation, gearbox.

Chassis And Suspension:

Front fork assembly, rear shock absorber, swingarm, wheel bearings, steering system.

Brakes:

Front and rear brake systems (disc/drum), hydraulic lines, master cylinders, caliper service, brake fluid replacement.

Electrical System:

Wiring diagrams, lighting system, battery, starter, charging system, fuses, switches, CDI unit.

Bodywork And Trim:

Panel removal and installation, seat, handlebars, fairings, decals.

Routine Maintenance:

Oil change, spark plug replacement, air filter cleaning/replacement, chain adjustment (if applicable to specific Jog models), brake fluid flush, tire pressure checks.

Troubleshooting:

Step-by-step diagnostic procedures for common starting, running, and electrical issues, including fault codes and symptom analysis.

Repair And Overhaul:

Detailed instructions for engine rebuilds, gearbox repairs, suspension component replacement, electrical system diagnostics and repair, brake system overhauls.

Tune Up And Adjustment:

Carburetor adjustment, ignition timing checks, CVT belt tension adjustments, idle speed settings.

Specifications And Tolerances:

Clear listing of all critical torque values, clearances, fluid capacities, and wear limits.

Depth Level:

Comprehensive, covering everything from basic routine maintenance to complete engine and transmission rebuilds.

Target Audience:

Professional motorcycle technicians, experienced DIY mechanics, and dedicated enthusiasts.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text for quick information retrieval.

Image Resolution:

High-resolution images and clear diagrams.

Diagram Clarity:

Detailed exploded views and wiring schematics.

Binding:

N/A (Digital Format)

Paper Quality:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

Air-cooled, 2-stroke, single-cylinder

Displacement:

49 cc

Bore X Stroke:

39.0 mm x 41.4 mm

Compression Ratio:

7.4:1

Cooling System:

Forced air cooling

Horsepower Estimate:

Approx. 5.7 - 6.5 PS @ 7000 RPM (varies by market and tuning)

Torque Estimate:

Approx. 5.5 - 6.0 Nm @ 6500 RPM (varies by market)

Fuel Delivery:

Carburetor (e.g., Mikuni VM16SH or similar)

Fuel Type:

Unleaded gasoline, 91 octane (RON)

Fuel Tank Capacity:

5.0 Liters

Oil Type:

2-stroke engine oil (JASO FD or API TC)

Oil Mixture Ratio:

Pre-mix or Autolube system (manual details specific system)

Spark Plug Type:

NGK BR9ES / DENSO W24ESR-U (or equivalent)

Spark Plug Gap:

0.7 - 0.8 mm

🔧 Transmission

Type:

Automatic Continuously Variable Transmission (CVT)

Drive Type:

V-belt drive

Clutch Type:

Centrifugal clutch

Gear Reduction:

Secondary reduction gear (specific ratios detailed in manual)

Cv Oil Type:

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

Cv Oil Capacity:

Approx. 0.12 Liters

📐 Dimensions

Overall Length:

Approx. 1720 mm

Overall Width:

Approx. 675 mm

Overall Height:

Approx. 1020 mm

Seat Height:

Approx. 750 mm

Wheelbase:

Approx. 1275 mm

Dry Weight:

Approx. 80 kg

Gross Vehicle Weight Rating:

Approx. 240 kg (Rider + Passenger + Cargo)

Front Tire Size:

3.00-10 42J

Rear Tire Size:

3.00-10 42J

Wheel Type:

Cast aluminum alloy

🛡️ Safety Features

Vehicle Class Safety:

Lightweight scooter, intended for low-speed urban use.

Braking System:

Front: Hydraulic disc brake; Rear: Drum brake.

Lighting:

Halogen headlight, LED taillight, turn signals.

Frame Construction:

Steel underbone frame.

Rider Protection:

Emphasis on agile handling for accident avoidance; rider safety is primarily dependent on proper riding gear and adherence to traffic laws.

💡 Technology Features

Dashboard:

Analog speedometer, fuel gauge (if equipped), turn signal indicators, high-beam indicator, oil warning light.

ABS:

Not applicable for this model year and class.

Smartphone Integration:

Not applicable for this model year and class.

🔧 Maintenance

Oil Change Interval:

Every 3,000 km or 6 months (whichever comes first) for gear oil; 2-stroke oil tank refills as needed.

Air Filter Maintenance:

Clean every 2,000 km, replace as needed.

Spark Plug Replacement:

Every 5,000 km or inspect annually.

Brake Fluid Replacement:

Every 2 years or as per manual recommendations.

Engine Oil Type:

Yamalube 2-Stroke (or equivalent JASO FD/API TC rated 2T oil)

Gear Oil Type:

Yamaha Gear Oil (or SAE 80 API GL-4)

Brake Fluid Type:

DOT 4 Hydraulic Brake Fluid

Common Wear Items:

CVT belt wear, rear shock absorber degradation, starter motor reliability (can be intermittent if not maintained).

Carburetor Issues:

Can be prone to clogging if stale fuel is used or if the air filter is neglected; requires periodic cleaning and adjustment for optimal performance.

Two Stroke Specifics:

Requires correct oil-to-fuel mixture or reliable autolube system function; carbon buildup in the exhaust and cylinder can affect performance if not regularly cleared.

📚 Vehicle History

Yamaha Legacy:

Yamaha Motor Corporation has a long and storied history in motorcycle and engine development, known for innovation and performance.

Mbk Acquisition:

MBK is a French scooter manufacturer acquired by Yamaha in 1987, integrating its European market presence and expertise.

Jog Lineage:

The Jog platform is one of Yamaha's most successful scooter lines, dating back to the 1980s, with numerous updates and variations over the years, including the sporty 'Z' variants.

2002 Generation:

Represents a refinement of the popular Jog platform, focusing on improved styling, emissions compliance (where applicable), and rider ergonomics.

Manufacturing Location:

Primarily manufactured in Europe (France) for the European market and potentially other Asian markets.

🏆 Awards & Recognition

General Recognition:

The Yamaha Jog series, in general, is widely recognized for its durability, sporty performance within the 50cc class, and reliability, making it a benchmark in the segment.

Industry Reviews:

Consistently praised in reviews of its time for agile handling, peppy acceleration for a 50cc, and user-friendly operation.

Emissions Standards:

Meets the emission standards relevant to its model year and target markets (e.g., Euro 1 or equivalent).