Segment:
Maxi-scooter, premium urban commuter.
Target Audience:
Owners seeking to perform their own maintenance and repairs, independent repair shops, and technical enthusiasts.
Competitors:
Suzuki Burgman 400, Honda Silver Wing 400/600, Kymco Xciting 400.
Value Proposition:
Comprehensive, authoritative repair information enabling DIY maintenance and professional servicing, saving time and money.
Content Benefit:
Empowers users with the knowledge to correctly identify, disassemble, adjust, and reassemble all components of the YP400 Majesty.
Engine:
Full disassembly, inspection, repair, and reassembly of the 400cc liquid-cooled 4-stroke SOHC engine.
Fuel System:
Fuel injection system, fuel pump, fuel filter, injectors, throttle body, and associated sensors.
Cooling System:
Radiator, coolant hoses, water pump, thermostat, and coolant specifications.
Transmission:
Automatic Continuously Variable Transmission (CVT) system, including drive and driven pulleys, V-belt, clutch, and gearbox.
Electrical System:
Ignition system, starting system, charging system (stator, regulator/rectifier), battery, lighting, fuses, relays, and wiring diagrams.
Chassis:
Frame, suspension (front forks, rear shock absorber), steering system, and wheel bearings.
Braking System:
Front and rear disc brakes, brake calipers, master cylinders, brake lines, fluid specifications, and bleeding procedures.
Bodywork And Trim:
Fairings, body panels, seats, storage compartments, and related hardware.
Diagnostic Troubleshooting:
Extensive diagnostic flowcharts and troubleshooting procedures for common and uncommon issues.
Scheduled Maintenance:
Oil changes, filter replacements, spark plug replacement, V-belt inspection/replacement, brake fluid changes, coolant checks, and general lubrication.
Engine Rebuild:
Detailed steps for engine disassembly, component inspection (piston, rings, cylinder, valves, crankshaft), and reassembly with torque specifications.
Cvt Service:
V-belt replacement, roller weight inspection, clutch assembly, and transmission fluid service.
Suspension Overhaul:
Fork seal replacement, fork oil change, and rear shock absorber inspection/replacement.
Brake Overhaul:
Brake pad replacement, caliper servicing, master cylinder rebuild, and brake line replacement.
Electrical Diagnostics:
Troubleshooting ignition issues, charging system faults, starter problems, and lighting malfunctions using wiring diagrams.
Component Replacement:
Step-by-step guidance for replacing major components like the battery, starter motor, fuel pump, and radiators.
Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds.
Troubleshooting:
Advanced diagnostic procedures and detailed troubleshooting guides for resolving mechanical and electrical issues.
Specifications:
Includes all critical torque values, clearances, fluid capacities, and electrical resistance values.
Illustrations Diagrams:
Features clear exploded views, detailed diagrams, and step-by-step illustrations for easy comprehension and execution of repairs.
Engine Type:
Liquid-cooled, 4-stroke, SOHC, 4-valve
Bore X Stroke:
92.0 mm x 75.0 mm
Compression Ratio:
10.0:1
Horsepower:
Approx. 28 HP @ 6,500 RPM (Varies slightly by region/year)
Torque:
Approx. 38 Nm @ 5,500 RPM (Varies slightly by region/year)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded gasoline (minimum 87 octane)
Oil Type:
SAE 10W-40 or SAE 20W-50 API SG or higher
Oil Capacity With Filter:
2.0 Liters (approx. 2.1 US qt)
Ignition System:
TCI (Transistor Controlled Ignition)
Spark Plug Type:
NGK CR9E or DENSO U27FER9
Engine Oil Change:
Every 5,000 km (3,000 miles) or annually.
V Belt Inspection Replacement:
Inspect every 10,000 km (6,000 miles), replace as needed or by 20,000 km (12,000 miles).
Spark Plug Replacement:
Every 10,000 km (6,000 miles).
Brake Fluid Change:
Every 2 years or 20,000 km (12,000 miles).
Coolant Change:
Every 2 years or 20,000 km (12,000 miles).
Engine Oil Specification:
SAE 10W-40 or SAE 20W-50, API SG or higher.
Brake Fluid Specification:
DOT 4 (or DOT 3 for older specifications).
Coolant Specification:
High-quality ethylene glycol-based coolant with distilled water (50/50 mix).
Common Wear Items:
V-belt wear, rear shock absorber degradation, and potential starter motor brushes wear over time.
Typical Failures:
Infrequent for well-maintained units, but can include fuel pump issues or thermostat failures.
