Segment:
Compact, entry-level to mid-range automatic scooter, popular in urban commuting.
Competitors:
Competes with models like Honda Spacy, Honda Vario, Suzuki Nex, and similar scooters from other manufacturers in its displacement class.
Design:
Known for its stylish, modern design often featuring a distinctive headlight cluster and ergonomic seating.
Practicality:
Offers practicality for daily commuting with automatic transmission, under-seat storage, and fuel efficiency.
Engine:
Detailed coverage of the 125cc engine, including disassembly, assembly, inspection, and adjustment procedures.
Fuel System:
Covers fuel injection (FI) or carburetor systems, fuel pump, injectors, fuel filter, and related components.
Cooling System:
Information on radiator, coolant, fan (if applicable), and thermostats for liquid-cooled variants.
Ignition System:
Details on spark plugs, ignition coils, CDI unit, and troubleshooting related to ignition timing and performance.
Transmission Drive:
Coverage of the automatic transmission (likely V-belt type CVT), clutch, variator, and final drive.
Chassis Frame:
Information on frame inspection, welding, and alignment checks.
Suspension:
Details on front forks, rear shock absorbers, and related linkage or adjustment points.
Brakes:
Comprehensive coverage of front and rear brake systems, including hydraulic (disc or drum) and mechanical components, fluid replacement, and bleeding procedures.
Wheels Tires:
Information on wheel bearing maintenance, tire pressure recommendations, and tire replacement.
Electrical System:
Covers battery, charging system (stator, rectifier/regulator), starter motor, lighting, horn, and wiring diagrams.
Bodywork:
Includes procedures for removal and installation of body panels, fairings, seats, and storage compartments.
Control Systems:
Details on throttle control, brake levers, and handlebar assembly.
Instrumentation:
Information on the speedometer, odometer, fuel gauge, and indicator lights.
Maintenance:
Routine maintenance tasks such as oil changes, filter replacements, spark plug checks, brake adjustments, and lubrication.
Troubleshooting:
Diagnostic procedures for identifying and resolving common and complex issues across all vehicle systems.
Repair:
Step-by-step instructions for repairing or replacing individual components and sub-assemblies.
Disassembly Assembly:
Detailed procedures for taking apart and reassembling various parts of the scooter.
Adjustments:
Specific instructions for making necessary adjustments to engine, brakes, and other systems.
Installation:
Guidance on installing new or replacement parts.
Specifications:
Inclusion of all critical service data, specifications, and torque values.
Depth:
Comprehensive, bumper-to-bumper coverage suitable for both professional mechanics and experienced DIY enthusiasts.
Visual Aids:
Includes pictorial diagrams, exploded views, drawings, and photos to illustrate procedures.
Special Tools:
References specific Yamaha special service tools and their usage where applicable.
Notes Precautions:
Contains special notes, important points, precautions, warnings (DANGER, CAUTION, NOTE) for safe and correct service.
Format:
PDF (Portable Document Format)
Printability:
Printable - all pages can be printed.
Readability:
High quality, allowing zooming and clear viewing of text and diagrams.
Binding:
Not applicable (Digital PDF)
Paper:
Not applicable (Digital PDF)
Reader:
Adobe Reader (or compatible PDF viewer).
Compatibility:
Compatible with Windows, Mac OS, and Linux operating systems.
Type:
Likely a 125cc, 4-stroke, SOHC, air-cooled engine (specifics may vary by market variant but 125cc is stated).
Bore X Stroke:
Specifications would be detailed within the manual (e.g., 52.4 x 57.9 mm for some Yamaha 125cc engines).
Compression Ratio:
Detailed in manual (typically around 9.5:1 to 10.5:1 for this class).
Horsepower:
Typically in the 8-10 HP range (exact figures in manual).
Torque:
Typically in the 9-10 Nm range (exact figures in manual).
Type:
Likely Fuel Injection (FI) or Carburetor; manual will detail the specific system for the covered years/markets.
Oil Type:
Yamaha specifies specific grades such as Yamalube 10W-40 or 20W-40 API SG or higher. (Exact spec in manual).
Oil Capacity:
Approx. 0.8 - 1.0 liters for engine oil change. (Exact spec in manual).
Engine Oil:
Recommended every 3,000-4,000 km or 6 months, whichever comes first. (Exact interval in manual).
Air Filter:
Inspect every 2,000 km, clean or replace as needed. (Exact interval in manual).
Spark Plug:
Inspect every 4,000 km, replace as needed. (Exact interval in manual).
Cvt Belt:
Inspect every 6,000-8,000 km, replace as recommended. (Exact interval in manual).
Brake Fluid:
DOT 3 or DOT 4 (as specified by Yamaha). (Exact spec in manual).
Coolant:
If liquid-cooled, a 50/50 mixture of ethylene glycol and distilled water. (Exact spec in manual).
Common Wear Items:
V-belt, clutch shoes, drive rollers, brake pads/shoes, tires, and battery are common wear items.
Potential Issues:
Occasional issues can include clogged fuel injectors/carburetors, electrical connector corrosion, and suspension wear, all of which are addressed in the manual.
