Segment:
Maxi-scooter / Sport scooter
Target Audience:
Commuters, touring riders, those seeking practicality with performance.
Key Competitors:
Suzuki Burgman 400, Honda Forza 250/300 (depending on market specifics for year), Aprilia Scarabeo 400
Design:
Comfortable, aerodynamic bodywork, large underseat storage, rider-friendly ergonomics.
Performance:
Powerful 400cc engine, smooth CVT transmission, capable of highway speeds and comfortable touring.
Primary Coverage:
Workshop Service and Repair
Secondary Coverage:
Maintenance, Troubleshooting, Diagnostics
Estimated Pages:
Extensive (typically 300-500+ pages for full workshop manuals)
Type:
Professional Workshop Repair Manual
Format:
Downloadable Digital Format (e.g., PDF)
Powertrain:
Engine, Fuel System, Ignition System, Cooling System, Lubrication System, Transmission (CVT), Final Drive
Chassis:
Frame, Suspension (Front and Rear), Steering System, Wheels, Tires, Brakes (Front and Rear)
Electrical:
Battery, Charging System, Starting System, Lighting System, Instrumentation, ECU, Wiring Harnesses, Fault Codes
Body And Trim:
Body Panels, Seat, Fairings, Storage Compartments, Controls
Maintenance:
Routine checks, Lubrication, Filter replacements, Fluid changes, Belt adjustments
Diagnostics:
Troubleshooting common issues, Fault code interpretation, Electrical system diagnostics
Repair Rebuild:
Engine disassembly/reassembly, Transmission overhaul, Suspension component replacement, Brake system repair, Electrical component repair
Special Tools:
Identification and usage of specialized tools required for specific procedures
Depth:
Comprehensive, suitable for professional technicians and advanced DIY enthusiasts. Includes detailed diagrams, torque specifications, and step-by-step instructions for complete overhauls.
Engine Type:
4-stroke, Liquid-cooled, SOHC, 4-valve, Single Cylinder
Bore X Stroke:
83.0 mm x 73.0 mm
Fuel Delivery:
Fuel Injection (Mikuni or similar)
Ignition System:
Digital TCI (Transistor Controlled Ignition)
Lubrication System:
Wet Sump
Horsepower:
Approx. 28-30 HP (at crankshaft, varies slightly by region/tune)
Torque:
Approx. 30-32 Nm (at crankshaft, varies slightly)
Fuel Type:
Unleaded Gasoline
Fuel Tank Capacity:
Approx. 14 Liters (3.7 US gal)
Overall Length:
Approx. 2270 mm (89.4 in)
Overall Width:
Approx. 775 mm (30.5 in)
Overall Height:
Approx. 1450 mm (57.1 in)
Wheelbase:
Approx. 1565 mm (61.6 in)
Dry Weight:
Approx. 196 kg (432 lbs)
Wet Weight:
Approx. 215 kg (474 lbs) (includes fluids and full tank)
Seat Height:
Approx. 750 mm (29.5 in)
Underseat Storage:
Sufficient for two full-face helmets or significant cargo
Crash Test Ratings:
N/A (Motorcycle/Scooter industry typically does not have standardized crash test ratings like cars)
Braking System:
Front: Dual hydraulic disc brakes; Rear: Single hydraulic disc brake. Optional ABS on some markets/trims.
Lighting:
Halogen headlamp, LED taillight, integrated turn signals
Frame Construction:
Steel underbone frame for rigidity and rider protection.
Mirrors:
Large, adjustable mirrors for enhanced rear visibility
Dashboard Display:
Analog tachometer, digital speedometer, fuel gauge, odometer, trip meter, clock, warning lights.
Lighting System:
Multi-reflector halogen headlight for improved visibility.
ABS Availability:
Available on specific models/markets for 2004, enhancing braking safety.
Connectivity Features:
N/A (Basic model, no advanced connectivity features like Bluetooth or GPS).
Oil Change Interval:
Every 5,000 km or 6 months, whichever comes first (refer to manual for exact specifications).
Air Filter Replacement:
Inspect every 5,000 km, replace as needed or every 10,000-15,000 km (refer to manual).
Spark Plug Replacement:
Every 10,000-12,000 km (refer to manual for specific type and gap).
Cvt Belt Inspection:
Inspect belt wear and condition every 10,000 km, replace when necessary.
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher, JASO MA certified.
Engine Oil Capacity:
Approx. 1.9 Liters (with oil filter change)
Coolant Type:
Yamaha's Super Coolant (or equivalent) - a 50/50 mix of ethylene glycol and deionized water.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Final Drive Oil Type:
Yamalube Gear Oil (or equivalent) SAE 80 API GL-4.
Final Drive Oil Capacity:
Approx. 150 cc
Common Wear Items:
CVT belt wear, variator rollers, clutch shoes, spark plugs, brake pads, tires.
Potential Failures:
Fuel pump issues (less common), stator winding failures, voltage regulator failure.
Maintenance Importance:
Regular maintenance, especially of the CVT system and cooling system, is crucial for longevity and performance.
Manufacturer:
Yamaha Motor Company
Brand Focus:
Known for innovation, performance, and reliability in motorcycles, marine products, and power equipment.
Predecessor:
Yamaha YP250 Majesty (though the 400 represented a significant step up in engine size and capability)
Successors:
Subsequent Majesty models, and the development of Yamaha's XMAX and TMAX lines which also cater to the maxi-scooter segment.
Production Years:
The Majesty 400 was introduced in the early 2000s, with the 2004 model being part of the initial generation.
Manufacturing Locations:
Primarily Japan, with potential assembly in other global locations.
