Vehicle Segment:
Lightweight, urban commuter scooter.
Target Audience:
Commuters, students, recreational riders seeking an easy-to-ride, fuel-efficient, and agile scooter.
Key Competitors:
Honda PCX125, Kymco Agility 125, Aprilia Scarabeo 125.
Design Philosophy:
Rugged, practical design with a large front wheel and robust suspension for varied urban terrain. Known for its versatility and durability.
Distinguishing Characteristics:
Unique styling with off-road inspired dual headlights, large 12-inch front tire, and comfortable riding position.
Engine Mechanical:
Detailed breakdown, assembly, timing, valve clearance, piston/cylinder inspection, crankshaft, connecting rod.
Fuel System:
Fuel injection system (EFI) components, injector, throttle body, fuel pump, pressure regulator, fuel tank, lines.
Ignition System:
CDI unit, ignition coil, spark plug, wiring.
Cooling System:
Radiator, fan, water pump, coolant, hoses.
Transmission Drivetrain:
Automatic CVT (Continuously Variable Transmission) unit, clutch, drive belt, variator, torque converter, final drive gears.
Brake System:
Front disc brake, rear disc brake, master cylinders, calipers, brake pads, hydraulic lines, fluid specifications, bleeding procedures.
Suspension System:
Front telescopic fork, rear monoshock absorber, spring rates, damping adjustments, fork oil specifications.
Steering System:
Handlebars, steering stem bearings, lubrication, adjustment.
Electrical System:
Wiring diagrams, battery, starter motor, charging system (stator, rectifier/regulator), lights (headlight, taillight, turn signals), horn, gauges, fuses, relays.
Chassis Frame:
Frame inspection, body panels, seat, fuel tank, storage compartment.
Wheels Tires:
Wheel bearings, tire sizes, inflation pressures, wheel replacement.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, brake pad inspection/replacement, tire pressure checks, chain/belt inspection (final drive).
Troubleshooting:
Diagnosis of common problems, symptom analysis, diagnostic codes (if applicable), testing electrical components.
Repair Overhaul:
Detailed step-by-step instructions for engine disassembly and reassembly, transmission servicing, brake caliper overhaul, suspension fork rebuild.
Electrical Diagnostics:
Schematic interpretation, voltage/resistance testing, troubleshooting wiring issues.
Component Replacement:
Instructions for replacing specific parts such as the battery, starter motor, fuel pump, brake levers, mirrors.
Depth:
Comprehensive; suitable for DIY mechanics and professional technicians. Covers everything from basic maintenance to full engine rebuilds.
Engine Type:
4-stroke, SOHC, 2-valve, single-cylinder, liquid-cooled
Bore X Stroke:
52.4 mm x 57.9 mm
Compression Ratio:
10.0:1
Fuel Delivery:
Electronic Fuel Injection (EFI)
Spark Plug:
CR7E or equivalent (check manual for specifics)
Horsepower Estimated:
Approx. 9.7 hp @ 7,500 rpm
Torque Estimated:
Approx. 7.0 lb-ft @ 6,000 rpm
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Fuel Tank Capacity:
1.6 gallons (6.0 L)
Instrument Cluster:
Analog speedometer, digital odometer, fuel gauge, clock, trip meter, indicator lights (turn signals, high beam, engine check).
Lighting Technology:
Halogen headlight, LED taillight.
No ABS Standard:
ABS was not standard or available on the 2011 Zuma 125.
Connectivity Features:
None; basic transportation focus.
Engine Oil Change:
Every 3,000 miles (4,800 km) or 6 months, whichever comes first (refer to manual for exact interval).
Oil Filter Replacement:
Every 6,000 miles (9,600 km) or 12 months, or with every other oil change.
Air Filter Cleaning:
Every 3,000 miles (4,800 km) or 6 months. Replacement at 12,000 miles (19,200 km).
Spark Plug Check:
Inspect every 3,000 miles (4,800 km). Replace as needed.
Cvt Belt Inspection:
Inspect every 3,000 miles (4,800 km). Replace as needed based on wear. Recommended replacement around 12,000-15,000 miles.
Valve Clearance Check:
Every 6,000 miles (9,600 km).
Engine Oil Type:
Yamalube 4-stroke motorcycle oil SAE 10W-40 API SG or higher (check manual for exact specification).
Engine Oil Capacity:
Approx. 0.90 L (without filter change), 0.95 L (with filter change).
Coolant Type:
Permanent type antifreeze coolant, 50% solution with de-ionized water. (e.g., Yamalube Coolant).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid (check manual for specific requirement).
Common Wear Items:
CVT drive belt, brake pads, tires, and battery are common replacement items due to regular use.
Potential Minor Issues:
Some users report occasional starting issues if the battery is weak or connections are dirty. CVT belt wear can lead to sluggish acceleration.
Manufacturer Origin:
Japan
Company Focus:
Yamaha Motor Corporation is renowned for its wide range of motorcycles, scooters, ATVs, WaveRunners, and musical instruments.
First Generation Introduction:
Introduced in 2008, the Zuma 125 was a significant step up from the Zuma 50, offering more power and highway capability.
Key Updates For 2011:
Typically minor color updates or package changes for specific model years within a generation.
Manufacturing Location:
Taiwan (for many Zuma models).