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)