Product Name:
Yamaha CY 50 Jog 1992-2001 Service Repair Workshop Manual
Covered Years:
1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Segment:
Compact scooter segment, popular for urban commuting and light recreational use.
Competitors:
Honda Dio, Suzuki Address, Kymco Agility, and other 50cc scooters of the era.
Features:
Compact and lightweight design, agile handling, fuel efficiency, reliable Yamaha engineering, automatic transmission for ease of use.
Engine:
Disassembly, assembly, inspection, tuning, carburetor, cooling system (air-cooled), lubrication
Transmission:
Automatic transmission (CVT), clutch, gear reduction
Electrical:
Ignition system, lighting, starter system, battery, charging system, wiring diagrams, fault diagnosis
Chassis:
Frame, suspension (front fork, rear shock absorber), steering, wheels, tires
Brakes:
Front and rear brake systems (likely drum or disc, depending on specific sub-model)
Fuel System:
Fuel tank, fuel lines, fuel pump (if applicable), carburetor
Exhaust System:
Muffler, exhaust pipe, emissions control (if applicable)
Bodywork:
Body panels, seat, fairings, storage compartment
Maintenance:
Routine servicing, oil changes, filter replacements, spark plug replacement, brake adjustments, chain lubrication (if applicable)
Repair:
Engine rebuild, transmission repair, suspension overhaul, electrical component replacement, brake caliper service
Troubleshooting:
Diagnostic procedures for common problems, electrical fault finding, engine performance issues
Adjustments:
Carburetor tuning, idle speed adjustment, brake lever free play
Disassembly Assembly:
Detailed step-by-step instructions for major component removal and installation
Depth:
Comprehensive (from basic maintenance to full engine rebuilds and electrical diagnostics)
Engine Type:
2-stroke, air-cooled, single-cylinder
Bore X Stroke:
Approx. 39.0 mm x 41.4 mm (typical for this class)
Compression Ratio:
Approx. 7.0:1 - 7.5:1 (typical for 2-stroke)
Cooling System:
Forced air cooling
Horsepower:
Approx. 4.0 - 5.0 HP (at varying RPM)
Torque:
Approx. 3.5 - 4.5 Nm (at varying RPM)
Carburetor Type:
Mikuni VM Series (e.g., VM12 or similar)
Fuel Type:
Unleaded gasoline (min. 87 octane)
Oil Mixing:
2-stroke pre-mix or oil injection system
Crash Test Ratings:
Not applicable for scooters in the same manner as automobiles.
Braking System:
Front and rear drum brakes (or optional front disc brake on some variants)
Lighting:
Headlight, taillight, brake lights, turn signals
Frame Construction:
Steel frame for rigidity and durability.
Oil Change:
Every 2,000 - 3,000 km or annually, whichever comes first.
Air Filter Cleaning:
Every 1,000 - 1,500 km or as needed based on operating conditions.
Spark Plug Replacement:
Every 4,000 - 6,000 km, or based on inspection.
Transmission Oil Change:
Every 6,000 - 10,000 km, or as specified in manual.
Engine Oil Type:
2-stroke engine oil, JASO FD or API TC grade.
Gear Oil Type:
Yamaha recommended hypoid gear oil or equivalent (SAE 80W-90).
Coolant:
N/A (Air-cooled)
Common Wear Items:
Drive belt, rollers, brake pads, spark plug, air filter, fuel filter.
Carburetor Issues:
Can become clogged with debris or varnish if fuel sits too long, leading to rough running or no-start conditions.
2 Stroke Specific:
Carbon buildup in the exhaust port and piston crown, requiring periodic cleaning.
Yamaha Legacy:
Yamaha Motor Company is a Japanese manufacturer renowned for its motorcycles, marine products, and musical instruments, with a strong reputation for quality and performance.
Jog Lineage:
The Jog series is one of Yamaha's most successful scooter lines, known for its sporty styling and reliable performance. The CY50 Jog was a key model in this line during the 1990s.
Manufacturing Location:
Primarily Japan, with potential production in other Yamaha facilities globally.
Production Period:
The CY50 Jog was a significant model for Yamaha throughout the 1990s, evolving with minor updates.