Category:
Compact Scooter / Moped
Target Audience:
Urban commuters, delivery services, recreational riders.
Competitors:
Honda Metropolitan, Kymco Agility 50, SYM Fiddle II 50.
Design:
Rugged, off-road inspired styling with durable construction.
Engine:
Reliable and fuel-efficient 4-stroke engine, known for longevity.
Performance:
Easy to handle, agile for city navigation.
Engine:
Complete disassembly, assembly, diagnosis, and repair of the 4-stroke, liquid-cooled engine.
Fuel System:
Carburetor specifications, adjustment, cleaning, fuel pump, fuel filter, and fuel lines.
Ignition System:
CDI unit, spark plug specifications, timing, and troubleshooting.
Transmission:
Automatic CVT (Continuously Variable Transmission) operation, belt replacement, clutch assembly, and gearbox.
Cooling System:
Radiator, fan, coolant specifications, hose routing, and thermostat.
Exhaust System:
Muffler, catalytic converter, and exhaust pipe inspection and replacement.
Electrical System:
Wiring diagrams, battery, charging system (stator, regulator/rectifier), starter motor, lighting, and indicators.
Brakes:
Front and rear brake caliper overhaul, brake pad replacement, brake fluid specifications, and bleeding procedures.
Suspension:
Front telescopic forks, rear shock absorber, and linkage inspection and service.
Steering:
Handlebar assembly, steering stem, bearings, and lubrication.
Wheels And Tires:
Tire pressure recommendations, wheel bearing inspection, and tire replacement.
Frame And Bodywork:
Chassis inspection, body panel removal and installation, seat, and storage compartment.
Maintenance:
Scheduled maintenance intervals, oil changes, filter replacements, and general upkeep.
Troubleshooting:
Diagnostic flowcharts for common problems (e.g., starting issues, poor performance, electrical faults).
Repair:
Step-by-step instructions for component removal, repair, and reassembly.
Adjustments:
Carburetor idle speed, throttle cable, and brake lever adjustments.
Specifications:
Torque specifications for critical fasteners, fluid capacities, and component measurements.
Depth:
Comprehensive: Suitable for professional technicians and advanced DIY mechanics, covering full engine rebuilds and complex electrical diagnostics.
Type:
4-stroke, Liquid-cooled, SOHC
Bore X Stroke:
39.0 mm x 41.4 mm
Compression Ratio:
12.0:1
Power Output:
Approx. 3.7 HP @ 7,500 RPM (specific figures may vary)
Torque:
Approx. 3.7 Nm @ 6,000 RPM (specific figures may vary)
Fuel Delivery:
Mikuni BS24 carburetor
Spark Plug:
NGK CR7E or Denso U20FSR-U
Valve Clearance Intake:
0.01 - 0.02 mm (cold)
Valve Clearance Exhaust:
0.01 - 0.02 mm (cold)
Fuel Tank Capacity:
4.0 Liters (1.06 US gal)
Crash Testing:
N/A (Scooter - typically not subject to automotive crash testing standards).
Brakes:
Hydraulic front disc brake, Drum rear brake.
Lighting:
Halogen headlight, LED tail light, amber front and rear turn signals.
Frame Construction:
Steel tube underbone frame designed for stability.
Ergonomics:
Upright riding position, floorboard for rider comfort and leg protection.
Engine Oil Change:
Every 3,000 km (1,860 miles) or 6 months, whichever comes first.
Air Filter Cleaning:
Every 6,000 km (3,730 miles) or 12 months; replacement as needed.
Transmission Oil Change:
Every 6,000 km (3,730 miles) or 12 months.
Spark Plug Replacement:
Inspect every 6,000 km (3,730 miles); replace as needed.
Cvt Belt Inspection:
Inspect every 6,000 km (3,730 miles); replace as needed based on wear.
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher
Engine Oil Capacity:
0.80 Liters (0.85 US qt) without oil filter change; 0.90 Liters (0.95 US qt) with oil filter change.
Coolant Type:
Yamaha Coolant (or equivalent) 50/50 mixture with distilled water
Common Wear Items:
CVT belt, brake pads, tires, and spark plugs are common wear items requiring regular inspection and replacement.
Carburetor Cleaning:
Carburetors on scooters of this era can sometimes require periodic cleaning or adjustment due to fuel quality or internal wear.
Electrical Connections:
Corrosion or looseness in electrical connectors can cause intermittent issues; regular inspection is recommended.
Manufacturer:
Yamaha Motor Corporation, a global leader in powersports and marine products, known for innovation and quality since 1955.
Zuma Lineage:
The Zuma line, introduced in the early 2000s, is characterized by its rugged, dirt-bike inspired styling and robust build, differentiating it from more conventional scooters.
Manufacturing Location:
Primarily manufactured in Japan and/or Taiwan by Yamaha.
