Vehicle Type:
Maxi-scooter / Urban Commuter
Target Audience:
Commuters seeking comfort, practicality, and performance for urban and light touring use.
Competitors:
Suzuki Burgman 400, Honda Silver Wing 400 (if applicable in certain markets), Kymco Xciting 400.
Storage Capacity:
Generous under-seat storage compartment, typically accommodating a full-face helmet and more.
Comfort:
Step-through riding posture, large comfortable seat, windscreen for weather protection.
Performance:
Ample power for highway cruising and quick acceleration in city traffic.
Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly procedures for the 400cc liquid-cooled engine.
Fuel System:
Fuel injection system, fuel pump, injectors, throttle body, fuel tank, and lines maintenance and troubleshooting.
Cooling System:
Radiator, coolant, water pump, hoses, and thermostat inspection and replacement.
Transmission And Drivetrain:
Automatic CVT (Continuously Variable Transmission) belt, clutch, variator, torque converter, and final drive maintenance and repair.
Brakes:
Hydraulic disc brakes (front and rear), brake pads, rotors, calipers, master cylinders, and brake fluid replacement and bleeding procedures.
Suspension:
Front telescopic forks, rear shock absorber(s), fork seals, and linkage inspection and service.
Electrical System:
Battery, charging system (stator, regulator/rectifier), ignition system, lighting, starter motor, and wiring harness diagrams.
Chassis And Bodywork:
Frame, body panels, fairings, seat, storage compartments, and lighting assembly removal and installation.
Wheels And Tires:
Tire pressure, tread depth checks, wheel bearing service, and tire replacement.
Exhaust System:
Muffler, catalytic converter, and exhaust pipe inspection and replacement.
Routine Maintenance:
Oil changes, filter replacements, spark plug inspection/replacement, air filter cleaning/replacement, coolant checks, and brake fluid changes.
Troubleshooting Guides:
Diagnostic procedures for common starting issues, engine performance problems, electrical faults, and braking issues.
Engine Rebuilding:
Detailed steps for cylinder head removal/installation, piston and ring replacement, crankshaft inspection, and valve clearance adjustment.
Transmission Repair:
CVT belt replacement, variator and clutch weight inspection, and final drive gear oil changes.
Electrical Diagnostics:
Wiring diagrams, component testing procedures, and troubleshooting for charging, ignition, and lighting systems.
Brake Service:
Complete guide to brake pad replacement, rotor resurfacing/replacement, caliper servicing, and hydraulic system bleeding.
Suspension Overhaul:
Front fork seal replacement, oil level checks, rear shock absorber replacement, and linkage bearing service.
Bodywork Repair:
Instructions for fairing removal/installation, seat adjustment, and access to internal components.
Depth Of Information:
Comprehensive: Covers everything from basic maintenance to complete engine and transmission rebuilds, including electrical troubleshooting.
Diagrams And Illustrations:
Features step-by-step diagrams and detailed illustrations for all repair and maintenance procedures.
Diagnostic Codes:
Includes information on reading diagnostic trouble codes (DTCs) if applicable to the model's ECU.
Engine Type:
4-stroke, liquid-cooled, SOHC, 4-valve, single-cylinder
Bore X Stroke:
92.0 mm x 75.0 mm
Compression Ratio:
11.2:1 (typical for this engine)
Horsepower:
Approximately 27.8 HP @ 6,500 RPM (for early models, subject to market variation)
Torque:
Approximately 34.0 Nm @ 5,250 RPM (for early models, subject to market variation)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
Approx. 14 Liters (3.7 US gal)
Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 API SG or higher) motorcycle oil
Oil Capacity With Filter Change:
Approx. 2.2 Liters
Engine Oil Change:
Every 3,000-5,000 km (1,800-3,000 miles) or 6 months, whichever comes first. Consult manual for precise interval.
Cvt Belt Inspection Replacement:
Inspect every 10,000 km (6,000 miles), replace typically every 20,000-30,000 km (12,000-18,000 miles).
Spark Plug Replacement:
Inspect every 5,000 km (3,000 miles), replace as per manual recommendation (e.g., 10,000-20,000 km).
Air Filter Cleaning Replacement:
Clean every 5,000 km (3,000 miles), replace as needed or per manual schedule.
Coolant Replacement:
Replace every 2 years or as per manual, usually involving flushing the system.
Final Drive Oil Type:
Yamaha Genuine Gear Oil (or equivalent SAE 80 API GL-4)
Final Drive Oil Capacity:
Approx. 0.24 Liters (0.25 US qt)
Common Wear Items:
CVT belt wear, front fork seal leaks, battery degradation, brake pad wear.
Potential Faults:
Occasional issues with starter motor reliability or fuel injector clogging if fuel quality is poor. Refer to manual for specific recalls or common faults.
