Segment:
Maxi-scooter, Grand Tourer Scooter
Competitors:
Honda Silver Wing, Suzuki Burgman 400
Design Philosophy:
Designed for comfortable long-distance commuting and touring, blending motorcycle-like performance with scooter convenience.
Manual Value:
Essential resource for DIY enthusiasts and professional mechanics to maintain and repair the YP400 Majesty, ensuring optimal performance and longevity.
Systems Covered:
Engine, Transmission, Fuel System, Cooling System, Electrical System, Chassis, Suspension, Brakes, Bodywork, Maintenance, Troubleshooting, Specifications, Wiring Diagrams
Approximate Pages:
Hundreds of Pages
Manual Type:
Service Repair Manual
Format:
PDF (Digital Download)
Engine Mechanical:
Detailed disassembly, inspection, assembly, and troubleshooting of engine components including cylinder, piston, crankshaft, connecting rod, valves, camshaft, and timing system.
Fuel System:
In-depth coverage of fuel injection system, fuel pump, injectors, fuel filter, and troubleshooting of fuel delivery issues.
Cooling System:
Procedures for radiator, coolant, water pump, thermostat, and cooling fan maintenance and repair.
Transmission Drivetrain:
Coverage of automatic transmission, CVT operation, belt replacement, clutch system, and final drive maintenance.
Electrical System:
Comprehensive wiring diagrams, starter system, ignition system, lighting, battery, charging system, and diagnostic procedures.
Chassis And Suspension:
Front fork disassembly and overhaul, rear shock absorber replacement, swingarm maintenance, and steering system inspection.
Braking System:
Front and rear brake caliper maintenance, disc replacement, brake fluid bleeding procedures, and parking brake adjustments.
Bodywork And Trim:
Panel removal and installation, seat maintenance, storage compartment access, and cosmetic component repair.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, chain/belt adjustments, fluid checks.
Troubleshooting:
Step-by-step diagnostic guides for common and complex issues, fault code interpretation, and symptom-based troubleshooting trees.
Engine Rebuilding:
Complete engine disassembly, inspection of critical components, measurement of tolerances, and reassembly procedures for engine restoration.
Transmission Repair:
Detailed instructions for transmission disassembly, component inspection, clutch pack service, and reassembly.
Electrical Diagnostics:
Guidance on using multimeters, interpreting wiring diagrams, testing sensors, actuators, and ECU troubleshooting.
Suspension And Steering:
Fork seal replacement, shock absorber installation, steering bearing service, and alignment checks.
Brake System Overhaul:
Brake pad replacement, caliper rebuilding, master cylinder service, and bleeding procedures.
Depth Of Coverage:
Comprehensive (from basic maintenance to full engine and transmission rebuilds)
Diagnostic Capabilities:
Advanced diagnostic procedures and troubleshooting guides for electronic and mechanical issues.
Rebuild Instructions:
Detailed step-by-step instructions for rebuilding major mechanical components.
Engine Type:
Four-stroke, Liquid-cooled, SOHC, 4-valve
Bore X Stroke:
83.0 mm x 73.0 mm
Compression Ratio:
10.6:1
Horsepower:
Approx. 27.5 HP @ 6,000 RPM (Varies slightly by market/year)
Torque:
Approx. 36.5 Nm @ 5,500 RPM (Varies slightly by market/year)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline
Ignition System:
TCI (Transistor Controlled Ignition)
Oil Type:
Yamaha Genuine Motor Oil 10W-40 or equivalent, API SG or higher
Oil Capacity:
1.70 L (with oil filter change)
Dashboard:
Analog tachometer, digital speedometer, fuel gauge, odometer, trip meters, coolant temperature indicator, clock, various warning lights.
ABS:
Available as an option on YP400A models for enhanced braking safety.
Lighting:
Halogen headlights, LED taillight and brake light.
Engine Oil Change:
Every 5,000 km (3,000 miles) or 6 months
Air Filter Cleaning:
Every 5,000 km (3,000 miles)
Spark Plug Replacement:
Every 10,000 km (6,000 miles)
Cvt Belt Inspection:
Every 10,000 km (6,000 miles)
Coolant Type:
Yamaha Coolant 50% or equivalent ethylene glycol-based antifreeze with distilled water
Common Wear Items:
CVT belt wear, rear shock absorber degradation, front fork seal leaks, starter motor brushes.
Potential Electrical Faults:
Regulator/rectifier failure on some models, stator coil issues.
Yamaha Legacy:
Yamaha Motor Company is a Japanese manufacturer of motorcycles, marine products, and other motorized products, known for innovation and performance.
Majesty Lineage:
The Majesty series has a long history, evolving from smaller displacement scooters to the larger 400cc models, focusing on comfort, practicality, and performance for urban and touring use.
Production Period:
YP400 Majesty produced from 2004 to 2009 in this generation.
