Segment:
        
        
            Lightweight scooter segment, popular for urban commuting and recreational use.
        
     
    
    
        
            Competitors:
        
        
            Honda Metropolitan, Suzuki Address, Kymco Agility 50, Genuine Buddy 50.
        
     
    
    
        
            Vehicle Strengths:
        
        
            Rugged design, agile handling, reliable Yamaha engine, practicality for city use.
        
     
    
    
        
            User Benefit:
        
        
            Empowers owners and technicians to perform comprehensive maintenance and repairs, reducing reliance on costly dealership services and extending vehicle lifespan.
        
     
 
    
    
    
        
            Engine:
        
        
            Complete disassembly, assembly, inspection, tuning, troubleshooting of 4-stroke engine.
        
     
    
        
            Fuel System:
        
        
            Carburetor (or fuel injection system depending on specific year/region) diagnosis, cleaning, adjustment, overhaul.
        
     
    
        
            Ignition System:
        
        
            CDI unit, spark plug, ignition coil, stator, troubleshooting.
        
     
    
        
            Cooling System:
        
        
            Air cooling system maintenance and inspection.
        
     
    
        
            Transmission:
        
        
            Automatic continuously variable transmission (CVT) service, belt replacement, clutch inspection, roller replacement.
        
     
    
        
            Drivetrain:
        
        
            Final drive gear inspection and lubrication, rear differential service.
        
     
    
        
            Brakes:
        
        
            Front and rear brake systems, hydraulic lines, master cylinders, calipers, brake pads, brake fluid replacement, bleeding.
        
     
    
        
            Suspension:
        
        
            Front fork overhaul, oil replacement, rear shock absorber inspection and replacement.
        
     
    
        
            Steering:
        
        
            Handlebar assembly, steering stem bearing service, adjustment.
        
     
    
        
            Electrical System:
        
        
            Wiring diagrams, battery, starter motor, charging system (alternator/stator), lighting system (headlight, taillight, turn signals), horn, fuses, relays.
        
     
    
        
            Bodywork Chassis:
        
        
            Frame inspection, body panel removal and installation, seat, footboard, fairings.
        
     
    
        
            Wheels Tires:
        
        
            Tire inspection, pressure checks, wheel bearing service, tire replacement.
        
     
    
        
            Exhaust System:
        
        
            Exhaust pipe and muffler inspection, gasket replacement.
        
     
    
    
        
            Routine Maintenance:
        
        
            Oil changes, filter replacements, spark plug checks, tire pressure adjustments, brake inspections, drive belt checks.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic procedures for common starting issues, running problems, electrical faults, and performance degradation.
        
     
    
        
            Repair Overhaul:
        
        
            Detailed step-by-step instructions for disassembling and reassembling major components like the engine, transmission, and suspension.
        
     
    
        
            Rebuilding:
        
        
            Comprehensive guide for rebuilding key engine and transmission parts.
        
     
    
        
            Adjustments:
        
        
            Carburetor adjustments, idle speed settings, brake lever free play adjustments.
        
     
    
        
            Wiring Diagrams:
        
        
            Detailed electrical schematics for all systems.
        
     
    
    
        
            Depth Level:
        
        
            Expert-level; covers complete disassembly, internal component inspection, and critical tolerances.
        
     
    
        
            Diagnostic Information:
        
        
            Includes fault codes (if applicable), symptom analysis, and diagnostic trees.
        
     
    
        
            Torque Specifications:
        
        
            Provides precise torque values for all fasteners.
        
     
    
        
            Clearances Tolerances:
        
        
            Specifies critical internal clearances and wear limits for engine and transmission components.
        
     
 
    
    
    
        
            Type:
        
        
            4-stroke, SOHC, 2-valve, air-cooled
        
     
    
        
            Displacement:
        
        
            49cc (approx. 3.0 cubic inches)
        
     
    
        
            Bore X Stroke:
        
        
            39.0 mm x 41.4 mm (typical specification, verify for exact year)
        
     
    
        
            Compression Ratio:
        
        
            12.0:1 (typical specification)
        
     
    
    
        
            Horsepower:
        
        
            Approximately 3.7 HP @ 7,000 RPM (typical specification, varies by region/emission standards)
        
     
    
        
            Torque:
        
        
            Approximately 2.7 lb-ft @ 6,500 RPM (typical specification)
        
     
    
    
        
            Induction:
        
        
            Carburetor (e.g., VM16SH) or Electronic Fuel Injection (EFI) depending on model year and market.
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline, minimum 87 octane
        
     
    
    
        
            Oil Type:
        
        
            Yamalube 4 (or equivalent SAE 10W-40 API SG or higher motorcycle oil)
        
     
    
        
            Oil Capacity:
        
        
            0.75 L (0.79 US qt) for oil change, 0.80 L (0.85 US qt) for filter change (verify specific model year).
        
     
 
    
    
    
        
            Engine Oil Change:
        
        
            Every 3,000 km (1,800 miles) or 6 months, whichever comes first (refer to manual for exact recommendation).
        
     
    
        
            Air Filter Cleaning:
        
        
            Every 2,000 km (1,200 miles) or 12 months, replace if necessary.
        
     
    
        
            Spark Plug Inspection:
        
        
            Every 4,000 km (2,400 miles) or 24 months.
        
     
    
        
            Cvt Belt Inspection:
        
        
            Inspect every 5,000 km (3,000 miles), replace as needed (typically every 10,000-15,000 km).
        
     
    
        
            Brake Fluid Change:
        
        
            Every 2 years or as recommended.
        
     
    
    
        
            Engine Oil Specification:
        
        
            Yamalube 4, SAE 10W-40, API SG or higher.
        
     
    
        
            Transmission Oil Specification:
        
        
            Yamaha Gear Oil, SAE 80, API GL-4.
        
     
    
    
        
            Common Wear Items:
        
        
            Drive belt wear, rear shock absorber aging, brake pad wear, carburetor jet clogging (on carbureted models).
        
     
    
    
        
            Starting Problems:
        
        
            Can be related to battery health, spark plug condition, or fuel delivery issues.
        
     
    
        
            Performance Loss:
        
        
            Often linked to clogged air filters, dirty carburetors, or worn CVT components.
        
     
    
    
        
            Engine Oil Capacity Full:
        
        
            0.75 L (0.79 US qt)
        
     
    
        
            Transmission Oil Capacity:
        
        
            0.12 L (0.13 US qt)