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)