Market Segment:
Maxi-scooter, offering a blend of comfort, practicality, and performance for commuting and light touring.
Target Audience:
Commuters, scooter enthusiasts, and owners seeking to perform their own maintenance and repairs.
Key Competitors Circa 2000:
Honda Silver Wing 250, Suzuki Burgman 250 (AN250), Kymco Xciting 250.
Engine Type:
Liquid-cooled, four-stroke, SOHC, 2-valve single cylinder.
Transmission Type:
Automatic V-belt transmission (CVT).
Comfort Features:
Spacious seating, under-seat storage, aerodynamic fairing for rider protection.
Performance Characteristics:
Balanced for urban agility and comfortable highway cruising.
Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly procedures for the 250cc liquid-cooled, 4-stroke engine.
Fuel System:
Carburetor system (likely Keihin or Mikuni), fuel tank, fuel pump, fuel filter, and fuel lines.
Cooling System:
Radiator, fan, coolant hoses, thermostat, and coolant specifications.
Ignition System:
CDI unit, ignition coil, spark plug, and timing specifications.
Transmission Clutch:
Automatic CVT (Continuously Variable Transmission) system, drive clutch, driven clutch, drive belt, and gearbox.
Suspension:
Front telescopic forks (including oil type and quantity) and rear shock absorber system.
Brakes:
Front and rear disc brake systems, brake calipers, master cylinders, brake fluid specifications (DOT 4), and bleeding procedures.
Electrical System:
Wiring diagrams, battery specifications, charging system (stator, rectifier/regulator), starter motor, lighting, and fuses.
Frame Chassis:
Frame structure, steering head bearings, and related components.
Bodywork:
Fairings, body panels, seat, storage compartment, and removal/installation procedures.
Wheels Tires:
Wheel removal and installation, tire sizes, and recommended tire pressures.
Routine Maintenance:
Oil changes, filter replacement, spark plug checks, coolant checks, brake pad inspections, and general lubrication.
Troubleshooting Diagnostics:
Step-by-step diagnostic procedures for common issues related to starting, running, electrical faults, and braking.
Engine Repair:
Piston, cylinder, valve, crankshaft, and camshaft service and repair.
Transmission Repair:
CVT belt replacement, clutch service, and gearbox maintenance.
Brake Service:
Brake pad replacement, caliper service, master cylinder overhaul, and brake fluid flushing.
Electrical Diagnostics:
Wiring diagram interpretation, component testing (e.g., stator output, rectifier function), and fault finding.
Suspension Overhaul:
Fork seal replacement, fork oil changes, and rear shock absorber inspection.
Bodywork Restoration:
Fairing removal, installation, and repair techniques.
Technical Depth:
Comprehensive, covering everything from basic rider maintenance to complete engine and transmission rebuilds, including electrical troubleshooting.
Engine Type:
Liquid-cooled, four-stroke, SOHC, 2-valve single cylinder
Bore X Stroke:
74.0 mm x 58.0 mm (typical for YP250 variant)
Compression Ratio:
10.0:1 (typical)
Cooling Method:
Liquid-cooled
Horsepower Approx:
~21 PS (approx. 20.7 hp) @ 7,500 rpm (typical for this displacement and era)
Torque Approx:
~2.1 kgf-m (approx. 15.2 lb-ft) @ 6,000 rpm (typical)
Fuel Delivery:
Carburetor (likely a single Mikuni BSR or Keihin CVK carb)
Carburetor Model Typical:
Mikuni BSR32 or similar
Fuel Type:
Unleaded gasoline, 87 octane or higher
Fuel Tank Capacity:
12 Liters (approx. 3.17 US gallons)
Oil Type:
Yamalube 4-stroke motorcycle oil (or equivalent) SAE 10W-40 or 20W-40
Oil Capacity With Filter:
1.8 Liters (approx.)
Oil Filter Part Number Example:
Yamaha 4X7-13440-90-00 (check specific model for exact fitment)
Length Approx:
2,150 mm (approx. 84.6 inches)
Width Approx:
750 mm (approx. 29.5 inches)
Height Approx:
1,365 mm (approx. 53.7 inches)
Wheelbase Approx:
1,545 mm (approx. 60.8 inches)
Dry Weight Approx:
170 kg (approx. 375 lbs)
Wet Weight Approx:
180 kg (approx. 397 lbs) (with all fluids and full tank)
Underseat Storage:
Sufficient for one full-face helmet and additional items.
Engine Oil Change:
Every 4,000 km (2,500 miles) or 6 months.
Oil Filter Replacement:
Every 8,000 km (5,000 miles) or 12 months.
Spark Plug Inspection:
Every 4,000 km (2,500 miles).
Air Filter Cleaning Or Replacement:
Inspect every 4,000 km (2,500 miles), clean or replace as needed.
Cvt Belt Inspection:
Inspect every 8,000 km (5,000 miles), replace as needed based on wear.
Brake Fluid Replacement:
Every 2 years or as needed based on condition.
Engine Oil Viscosity:
SAE 10W-40 or 20W-40 (API SE, SF, SG or higher)
Coolant Type:
High-quality ethylene glycol-based coolant with distilled water (50:50 mix).
Common Issues Early Models:
Potential for carburetor cleaning due to fuel quality, wear on CVT components (belt, rollers) over time, and occasional electrical connector corrosion if not maintained.
Preventative Maintenance Tips:
Regular cleaning of the air filter and carburetor jets, timely replacement of the CVT belt, and checking electrical connections will prolong the life and reliability of the scooter.
Brand Heritage:
Yamaha Motor Company, a globally renowned manufacturer of motorcycles, musical instruments, and other motorized products, known for innovation and quality since its founding in 1955.
Majesty Lineage:
The Majesty line, introduced in the early 1980s, became synonymous with comfortable, practical, and stylish maxi-scooters. The 250cc models, like the YP250, offered a significant step up in performance and features from smaller scooters.
Production Period Yp250:
The YP250 platform was produced for many years, with the 2000 model representing a mature and well-developed iteration of the design.
Manufacturing Locations:
Primarily manufactured in Japan and potentially other Yamaha global facilities.