Category:
Lightweight Scooter
Target Audience:
Commuters, Casual Riders, Hobbyist Mechanics
Key Competitors:
Honda Elite 125, Suzuki Burgman 125, Aprilia Scarabeo 125 (competitors in similar displacement class and era)
Vehicle Appeal:
Reliability, Fuel Efficiency, Ease of Operation, Practicality for Urban Use
Manual Value Proposition:
Essential resource for maintaining and repairing the Yamaha RIVA 125/Z, extending its lifespan and ensuring optimal performance.
Primary Coverage:
Comprehensive Service and Repair
Specific Areas:
Engine, Transmission, Fuel System, Electrical System, Chassis, Suspension, Brakes, Bodywork, Troubleshooting, Maintenance Schedules
Type:
Service Manual / Repair Manual
Engine:
Disassembly, Assembly, Rebuild, Tuning, Carburetor Overhaul, Ignition System, Cooling System (if applicable)
Transmission:
CVT (Continuously Variable Transmission) Maintenance, Belt Replacement, Clutch Inspection, Gearbox Operation
Fuel System:
Fuel Tank, Fuel Lines, Carburetor Adjustment and Cleaning, Fuel Pump (if applicable)
Electrical System:
Battery, Charging System, Ignition System, Lighting, Starter Motor, Wiring Diagrams, Fuse Box
Chassis And Suspension:
Frame Inspection, Front Fork Overhaul, Rear Shock Absorber Replacement, Swingarm Bushings, Wheel Bearings
Brakes:
Brake Fluid Flush, Pad Replacement, Disc Inspection, Caliper Servicing, Lever Adjustment
Bodywork And Trim:
Panel Removal and Installation, Seat, Fairings, Handlebars
Routine Maintenance:
Oil Changes, Filter Replacements, Spark Plug Service, Air Filter Cleaning/Replacement, Tire Pressure Checks, Brake Adjustments
Troubleshooting:
Diagnostic Flowcharts, Symptom-Based Troubleshooting, Common Problem Identification
Repair Procedures:
Detailed step-by-step instructions for component repair and replacement
Specifications And Data:
Torque Values, Clearances, Fluid Capacities, Electrical Specifications
Depth:
Comprehensive: Covers basic maintenance to major overhauls and diagnostics
Engine Type:
4-Stroke, Air-Cooled, SOHC
Bore X Stroke:
52 mm x 58.6 mm
Horsepower Peak:
Approximately 9.5 HP @ 7500 RPM (estimated, varies by specific model year)
Torque Peak:
Approximately 7.3 lb-ft @ 6000 RPM (estimated)
Carburetor Type:
Mikuni VM Series (specific model number varies, typically VM20 or similar)
Fuel Type:
Unleaded Gasoline (Regular)
Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 API SG, JASO MA)
Ignition System:
CDI (Capacitor Discharge Ignition)
Cooling Method:
Forced Air Cooling
Length:
Approx. 1840 mm (72.4 in)
Width:
Approx. 660 mm (26.0 in)
Height:
Approx. 1080 mm (42.5 in)
Wheelbase:
Approx. 1275 mm (50.2 in)
Dry Weight:
Approx. 95 kg (209 lbs)
Wet Weight:
Approx. 100 kg (220 lbs)
Fuel Tank Capacity:
Approx. 6.5 Liters (1.7 US gal)
Engine Oil Capacity:
Approx. 0.9 Liters (0.95 US qt) (without filter change), 1.0 Liters (1.05 US qt) (with filter change)
Front Tire Size:
3.50-10 4PR
Rear Tire Size:
3.50-10 4PR
Wheel Type:
Cast Aluminum
Crash Test Ratings:
N/A (Motorcycle/Scooter safety is assessed differently than automobiles)
Braking System:
Front: Disc Brake, Rear: Drum Brake
Lighting:
Headlight, Taillight, Brake Light, Turn Signals
Ride Comfort:
Suspension System designed for urban riding
Mirrors:
Dual Rearview Mirrors
Infotainment System:
N/A (Basic scooter design)
Dashboard Features:
Speedometer, Odometer, Fuel Gauge (on some models), Indicator Lights (turn signals, oil, high beam)
Engine Oil Change:
Every 3,000 km (1,800 miles) or 6 months, whichever comes first
Air Filter Cleaning:
Every 3,000 km (1,800 miles)
Spark Plug Replacement:
Every 6,000 km (3,600 miles)
Cvt Belt Inspection:
Every 6,000 km (3,600 miles)
Brake Fluid Flush:
Every 12,000 km (7,200 miles) or 12 months
Engine Oil:
SAE 10W-40 API SG, JASO MA
Gear Oil:
SAE 80W API GL-4
Brake Fluid:
DOT 3 or DOT 4
Common Wear Items:
CVT belt, brake pads, rear shock absorber, spark plug, air filter, carburetor jets
Carburetor Problems:
Clogging due to stale fuel, idle instability, lean/rich conditions
Electrical Issues:
Corroded connections, intermittent lighting, stator or regulator/rectifier failure (less common but possible)
Storage Recommendations:
Fuel stabilizer for long-term storage, battery tender, cover to protect from elements.
Manufacturer:
Yamaha Motor Company, Ltd.
Brand Focus:
Motorcycles, Scooters, Marine Products, Musical Instruments
Model Introduction:
The RIVA series was Yamaha's entry into the scooter market, with the 125cc model being a popular choice for utility and commuting.
Design Philosophy:
Focus on reliability, practicality, and ease of use, making it suitable for a wide range of riders.
Production Period:
1985-2001
Manufacturing Origin:
Japan (primary production, variations may exist)