Segment:
Maxi-scooter segment
Target Audience:
Owners, independent repair shops, professional mechanics seeking comprehensive service information
Competitors:
Suzuki Burgman 400, Honda Forza 300/350 (though Yamaha is a larger displacement competitor), Kymco Xciting 400i
Manual Value Proposition:
Factory-level detail, exhaustive coverage for all repairs and servicing, lifetime access, cost-effective alternative to dealership service.
Vehicle Positioning:
The Yamaha YP400 Majesty (also known as the Versity in some markets) was Yamaha's flagship maxi-scooter, offering comfortable touring capabilities, ample storage, and a powerful engine for its class.
Engine System:
Engine disassembly, assembly, troubleshooting, performance tuning, diagnostics, fuel system, lubrication system, cooling system, ignition system, starting and charging system
Transmission System:
CVT (Continuously Variable Transmission) inspection, maintenance, repair, clutch operation, drive belt, torque converter
Chassis System:
Frame inspection, suspension (front and rear), steering system, wheels, tires, braking system (front and rear, hydraulic lines, calipers, master cylinder, pads, rotors)
Electrical System:
Wiring diagrams, lighting system, instrumentation, battery, starter motor, alternator, ignition coil, electrical components testing and troubleshooting, fuses, relays
Bodywork And Trim:
Fairings, panels, seat, storage compartments, luggage rack (if applicable), bodywork removal and installation, cosmetic repairs
Maintenance Procedures:
Scheduled maintenance, oil changes, filter replacements, spark plug service, coolant checks and changes, brake fluid replacement, drive belt inspection and replacement, tire pressure checks, lubrication points
Troubleshooting Procedures:
Diagnostic flowcharts, common problems and their solutions, electrical system fault finding, engine performance issues, braking system anomalies
Repair Procedures:
Step-by-step instructions for component removal, repair, and reinstallation for all major systems. Includes detailed procedures for engine rebuild, transmission overhaul, brake system service, and electrical component replacement.
Diagnostic Capabilities:
Advanced diagnostics, including electrical component testing using multimeters, pinpointing electrical faults, and interpreting engine performance parameters.
Rebuild Procedures:
Comprehensive engine and transmission rebuild procedures, including torque specifications, clearances, and assembly sequences.
Diagrams And Illustrations:
Hundreds of detailed photos and exploded diagrams illustrating every component and procedure, crucial for correct assembly and identification.
Special Tools:
The manual would detail any specialized tools required for specific procedures, such as flywheel holders, clutch spring compressors, or torque wrenches with appropriate ranges.
Engine Type:
Four-stroke, liquid-cooled, DOHC, 4-valve, single-cylinder
Bore X Stroke:
83.0 mm x 73.0 mm (typical, confirm specific model year)
Compression Ratio:
10.0:1 (typical, confirm specific model year)
Horsepower:
Approx. 28.4 HP @ 6,000 RPM (typical, confirm specific model year)
Torque:
Approx. 36.4 Nm @ 5,250 RPM (typical, confirm specific model year)
Fuel Delivery:
Fuel Injection (throttle body size typically 42mm)
Fuel Type:
Unleaded gasoline (minimum octane rating typically 87)
Oil Type:
Yamalube (or equivalent) 10W-40 API SG or higher (confirm specific model year for exact spec)
Oil Capacity:
Approx. 1.7 L (without filter change), 1.8 L (with filter change) (confirm specific model year for exact spec)
Coolant Type:
Yamaha's Super Coolant (or equivalent) 50/50 mixture of ethylene glycol and deionized water
Coolant Capacity:
Approx. 1.0 L (confirm specific model year for exact spec)
Overall Length:
Approx. 2,235 mm (confirm specific model year)
Overall Width:
Approx. 775 mm (confirm specific model year)
Overall Height:
Approx. 1,400 mm (confirm specific model year)
Seat Height:
Approx. 780 mm (confirm specific model year)
Dry Weight:
Approx. 176 kg (confirm specific model year)
Wet Weight:
Approx. 187 kg (confirm specific model year)
Maximum Load Capacity:
Typically around 180-200 kg, including rider and cargo (confirm specific model year)
Fuel Tank Capacity:
Approx. 14 L (confirm specific model year)
Crash Test Results:
N/A (Motorcycle/Scooter safety is generally assessed differently than cars, focusing on rider protection and vehicle stability)
Braking System:
Front: Dual disc brakes, Rear: Single disc brake. ABS (Anti-lock Braking System) may be optional on certain models/years.
Lighting:
Halogen headlights, LED taillight and brake light (depending on year and market)
Chassis Construction:
Steel tube frame for rigidity and stability.
Windscreen:
Adjustable or fixed windscreen for rider comfort and protection from elements.
Dashboard:
Digital and analog combination meter cluster, providing speed, RPM, fuel level, coolant temperature, odometer, trip meter, clock, and indicator lights.
ABS Availability:
Optional Anti-lock Braking System (ABS) available on some market variants, enhancing braking safety.
Charging Port:
Some models may feature a 12V power outlet for charging devices (confirm specific year/market).
Engine Oil Change:
Every 4,000 km or 4 months, whichever comes first (typical, confirm specific model year).
Oil Filter Replacement:
Every 8,000 km or 8 months, coinciding with every second oil change (typical, confirm specific model year).
Spark Plug Replacement:
Every 12,000 km or 12 months (typical, confirm specific model year for exact plug type and gap).
Air Filter Cleaning/Replacement:
Inspect every 4,000 km, clean or replace as needed. Replace generally every 12,000 km (typical, confirm specific model year).
Transmission Belt Inspection:
Inspect every 4,000 km. Replacement typically recommended around 20,000 km, but depends on wear.
Brake Fluid Replacement:
Every 2 years, regardless of mileage (critical for braking performance).
Engine Oil Specification:
Yamalube 4T 10W-40 API SG or higher.
Coolant Specification:
50% mixture of ethylene glycol and deionized water.
Brake Fluid Specification:
DOT 4 hydraulic brake fluid.
Common Wear Items:
Drive belt (can wear out and affect acceleration), variator rollers (can flatten and cause vibration/performance loss), suspension components (bushings, seals), wheel bearings, brake pads.
Potential Electrical Issues:
Less common, but stator or rectifier issues can occur over time. Wiring harness integrity is important. Some models might have specific recall campaigns.
Engine Performance Nuances:
Proper maintenance of the fuel injection system, air filter, and exhaust is crucial for optimal performance. Carburetor models (if any variant existed outside the main FI era) would require more frequent tuning.
Manufacturer:
Yamaha Motor Corporation, Japan
Core Business:
Motorcycles, marine products, musical instruments, power generators.
Introduction Year:
The YP400 Majesty was introduced globally in the early 2000s, with this specific generation (YP400) serving from 2004 onwards. It represented a significant step up in engine size and features for Yamaha's scooter line.
Previous Models:
Succeeded by newer Yamaha TMAX models or other scooter lines, though the Majesty concept of a comfortable, powerful commuter scooter persists.
Manufacturing Locations:
Primarily manufactured in Japan and potentially other Yamaha global facilities.
