Category:
Lightweight Scooter
Target Audience:
Urban commuters, recreational riders.
Key Competitors:
Honda Elite, Suzuki Address, Kawasaki Cavalon (during various model year overlaps).
Aerodynamics:
Streamlined bodywork for efficient urban travel and weather protection.
Practicality:
Automatic transmission, under-seat storage, easy to operate.
Performance:
Adequate power for city riding and light highway use.
Powertrain:
Engine, transmission, final drive, fuel system, cooling system, exhaust system.
Chassis:
Frame, suspension (front and rear forks), steering, wheels, tires.
Brakes:
Front and rear brake systems (drum/disc), hydraulic components, fluid specifications.
Electrical:
Ignition system, starting system, charging system, lighting, wiring diagrams, battery.
Bodywork And Trim:
Body panels, seat, fairings, storage compartments, fasteners.
Maintenance:
Routine checks, oil changes, filter replacements, lubrication, spark plug service, brake adjustments.
Repair And Rebuild:
Engine overhaul, transmission disassembly and reassembly, carburetor tuning, electrical component replacement.
Troubleshooting:
Diagnostic procedures for common issues, symptom-based problem solving.
Specifications:
Torque values, clearances, fluid capacities, electrical resistance.
Depth:
Detailed step-by-step repair instructions, exploded views, technical drawings, and diagnostic charts suitable for professional mechanics and experienced DIY enthusiasts.
Engine Type:
Four-stroke, single-cylinder, air-cooled
Displacement:
124 cc (Approximate)
Bore X Stroke:
Variable by specific model year, typically around 54.0 mm x 54.5 mm
Compression Ratio:
Typically 9.5:1 to 10.0:1
Horsepower:
Approx. 8-10 HP @ 7500 RPM (varies by year/tuning)
Torque:
Approx. 7-8 lb-ft @ 6000 RPM (varies by year/tuning)
Carburetor:
Mikuni VM series (e.g., VM26 or similar, specific model may vary).
Fuel Type:
Unleaded gasoline, minimum 87 octane
Cooling Method:
Air-cooled
Length:
Approx. 1900 mm (varies slightly by year)
Width:
Approx. 670 mm (varies slightly by year)
Height:
Approx. 1100 mm (varies slightly by year)
Dry Weight:
Approx. 105-115 kg (varies by year)
Gross Vehicle Weight Rating:
Check specific model plate; typically around 250 kg
Front Tire Size:
3.50-10 4PR
Rear Tire Size:
3.50-10 4PR
Fuel Tank Capacity:
Approx. 6.0 - 7.0 Liters (includes reserve, varies by year)
Engine Oil Change:
Every 3,000 km or 6 months, whichever comes first.
Air Filter Cleaning:
Every 3,000 km or 6 months; replace every 6,000 km or 12 months.
Spark Plug Replacement:
Every 6,000 km or 12 months.
Valve Clearance Check:
Every 12,000 km or 24 months.
Engine Oil Type:
Yamaha Genuine 4-Stroke Scooter Oil or equivalent API SG, SAE 10W-30 or 20W-40 (check manual for specific year recommendation).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Carburetor Cleaning:
Carburetors can become gummed up with age, leading to starting issues or rough running. Regular cleaning and proper fuel storage are key.
Cvt Belt Wear:
The CVT drive belt will wear over time and require replacement to maintain proper acceleration and performance. Check for cracks or glazing.
Electrical Connections:
Corrosion on electrical connectors can lead to intermittent faults or non-operation of lights and ignition.
Fuel System Maintenance:
Ensure fuel petcock is functioning correctly and fuel lines are not brittle or leaking.
Yamaha Motorcycles:
Yamaha Motor Corporation is renowned for its innovation and quality in motorcycles, scooters, and powersports vehicles, with a strong history dating back to 1955.
Riva Lineup:
The Riva series was Yamaha's line of stylish and practical scooters designed for urban mobility. The 125/125Z models offered a good balance of performance and efficiency for their era.
Production Period:
The RIVA 125/Z models were produced from the mid-1980s through the early 2000s, evolving subtly through different model years.