Target User:
DIY enthusiasts, independent repair shops, and professional Yamaha technicians seeking in-depth repair and maintenance information.
Manual Advantage:
Offers make, model, and year specificity, crucial for accurate repairs, unlike generic manuals. Provides comprehensive coverage from basic maintenance to complete engine rebuilds.
Content Scope:
Covers all workshop repair procedures, electrical diagrams, service procedures, fluid capacities, and troubleshooting for the YP400 Majesty.
Diagram Quality:
Features step-by-step diagrams, enhancing clarity and ease of understanding for complex procedures.
Delivery Speed:
Instant download eliminates waiting time, providing immediate access to critical repair information.
Engine Management:
Fuel system, ignition system, electric starter, combustion chamber, lubrication, cooling system.
Powertrain:
Clutch operation and adjustment, gearshift linkage, sub-transmission, transmission internals, crankshaft, primary shaft, crankcase.
Chassis And Suspension:
Front wheel assembly, front suspension (forks), rear wheel assembly, rear suspension (shock absorber/swingarm), steering.
Braking System:
Hydraulic brake system (front and rear), brake fluid specifications, caliper service, master cylinder overhaul, brake pad replacement.
Charging And Battery:
Battery specifications, charging system (alternator/stator, rectifier/regulator), wiring diagrams for charging circuit.
Ignition And Starting:
Ignition system components (spark plug, coil, CDI unit), electric starter motor, starter clutch, starting circuit wiring.
Lighting And Switches:
Headlight, taillight, turn signals, brake lights, dashboard illumination, handlebar switches (start, lights, horn, etc.), ignition switch.
Wiring Diagrams:
Comprehensive electrical diagrams for all systems, facilitating troubleshooting and component identification.
Engine Rebuild:
Detailed procedures for cylinder head disassembly/assembly, valve inspection and adjustment, piston removal/installation, cylinder boring and honing, crankshaft and connecting rod service.
Transmission Service:
Removal and installation of transmission components, inspection of gears and bearings, clutch disassembly and reassembly, variator and drive belt service.
Suspension And Steering:
Fork oil replacement, seal replacement, shock absorber removal and installation, steering bearing inspection and adjustment.
Brake System Repair:
Bleeding the hydraulic brake system, caliper overhaul, pad replacement, rotor inspection and replacement, master cylinder service.
Electrical Diagnostics:
Troubleshooting electrical faults, testing components (coils, sensors, switches), wiring repairs, battery testing, charging system analysis.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, air filter cleaning/replacement, coolant checks and flushes, lubrication points.
Troubleshooting Guide:
Systematic approach to diagnosing common problems and identifying root causes.
Diagnostic Capabilities:
Covers detailed diagnostics for all major systems, enabling identification of issues beyond basic visual inspection.
Rebuild Procedures:
Provides complete step-by-step instructions for engine and transmission rebuilds, including torque specifications and critical clearances.
Electrical Schematics:
Includes detailed, easy-to-read electrical diagrams essential for advanced troubleshooting and repair of the electrical system.
Engine Type:
Liquid-cooled, 4-stroke, SOHC
Bore X Stroke:
92.0 mm x 75.0 mm
Compression Ratio:
10.0:1 (Typical for this engine family)
Horsepower:
Approx. 28 hp @ 6,000 rpm (Actual figures may vary by region and specific model year)
Torque:
Approx. 37.0 Nm (27.3 lb-ft) @ 5,500 rpm (Actual figures may vary)
Fuel Delivery:
Fuel Injection (FI)
Fuel Type:
Unleaded gasoline
Oil Capacity:
Approx. 1.7 Liters (with filter change)
Recommended Oil:
Yamalube 4 (or equivalent) 10W-40 API SG or higher (Specific viscosity and API rating provided in manual)
Coolant Type:
Ethylene glycol based antifreeze solution (50% mixture recommended)
Coolant Capacity:
Approx. 1.0 Liters
Crash Test Information:
Not applicable for this type of vehicle/manual, focus is on mechanical and electrical safety features.
Braking System:
Linked-action disc brakes (front and rear) for enhanced stopping power and stability.
Lighting:
Halogen headlight, bright taillight, and LED indicators for improved visibility.
Chassis Design:
Robust frame construction providing stability and rider protection.
Ergonomics:
Comfortable riding position designed to reduce rider fatigue on longer journeys.
Dashboard Features:
Digital/analog speedometer, tachometer, fuel gauge, coolant temperature gauge, odometer, trip meter, warning lights (oil, battery, engine, etc.).
Braking Assistance:
Linked braking system offers improved stability and control during deceleration.
Diagnostics Port:
On-board diagnostics (OBD) capabilities may exist for advanced troubleshooting, facilitated by the manual's electrical diagrams.
Initial Service:
Typically around 600 miles (1,000 km) for first service (checking, adjusting, oil change).
Regular Oil Change:
Every 2,000-3,000 miles (3,000-5,000 km) or annually, whichever comes first.
Air Filter Service:
Check every 2,000 miles (3,000 km), clean/replace as needed. Replacement typically around 10,000-12,000 miles (16,000-20,000 km).
Spark Plug Replacement:
Inspect every 4,000 miles (6,000 km), replace as needed. Typical replacement interval around 10,000-12,000 miles (16,000-20,000 km).
Clutch Belt Inspection:
Inspect belt wear and condition every 4,000 miles (6,000 km). Replace belt typically around 12,000-15,000 miles (20,000-25,000 km).
Engine Oil Spec:
10W-40 API SG or higher (as per manual recommendation).
Brake Fluid Spec:
DOT 3 or DOT 4 (as per manual recommendation, crucial for hydraulic brake system performance).
Coolant Spec:
50% Ethylene Glycol Antifreeze Mixture (as per manual recommendation).
Common Wear Items:
Drive belt wear, variator roller wear, suspension bushing wear, brake pad and disc wear.
Electrical Component Life:
While generally reliable, components like the rectifier/regulator or stator can be susceptible to failure over time due to heat and vibration, requiring specific diagnostic procedures.
