Vehicle Segment:
Maxi-scooter / Urban Commuter
Target Audience:
City commuters seeking a comfortable, stylish, and practical two-wheeler with ample storage.
Competitors:
Honda Forza 250, Suzuki Burgman 250, Kymco Xciting 250.
Design:
Aerodynamic styling with a distinctive 'cyclops' headlight design and a spacious under-seat storage compartment.
Comfort:
Comfortable rider ergonomics, ample legroom, and a plush seat for extended rides.
Practicality:
Large storage capacity under the seat, ideal for groceries or a full-face helmet.
Performance:
Balanced performance for urban navigation and light highway use.
Engine Mechanical:
Complete overhaul procedures for the 250cc 4-stroke engine.
Fuel System:
Detailed information on fuel injection system, injectors, fuel pump, and pressure regulator.
Ignition System:
Ignition timing, spark plugs, ignition coils, and ECU control.
Cooling System:
Radiator, coolant flow, water pump, and thermostat operation.
Exhaust System:
Catalytic converter, mufflers, and lambda sensor information.
Transmission:
Automatic CVT (Continuously Variable Transmission) system, drive belts, clutch, and variator maintenance.
Brakes:
Front and rear brake system diagnosis, pad replacement, caliper service, and hydraulic system bleeding.
Suspension:
Front telescopic forks and rear shock absorber inspection, service, and adjustment.
Steering:
Handlebar, steering stem, and bearing maintenance.
Electrical System:
Wiring diagrams, battery, charging system, starter motor, lighting, and instrumentation.
Frame And Bodywork:
Chassis inspection, fairing removal and installation, and seat assembly.
Wheels And Tires:
Wheel bearing service, tire pressure, and tire replacement guidelines.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, and general inspection.
Troubleshooting:
Diagnostic charts and procedures for common issues and malfunctions.
Engine Rebuild:
Detailed step-by-step instructions for engine disassembly, cleaning, inspection, and reassembly.
Transmission Service:
CVT belt replacement, clutch inspection, and variator servicing.
Electrical Diagnostics:
Testing electrical components and troubleshooting wiring faults using diagrams.
Brake System Maintenance:
Brake fluid replacement, bleeding procedures, and component servicing.
Suspension Adjustment:
Fork oil level checks and adjustments, rear shock pre-load settings.
Depth Level:
Comprehensive
Detail Level:
Includes specifications, torque values, clearances, and troubleshooting guides for advanced repairs.
Engine Type:
Liquid-cooled, 4-stroke, SOHC, 4-valve
Bore X Stroke:
74.0 mm x 58.0 mm
Compression Ratio:
10.0:1
Fuel Delivery:
Fuel Injection (FI)
Ignition System:
TCI (Transistor Controlled Ignition)
Horsepower:
Approx. 20.7 PS @ 7500 rpm (manufacturer data may vary)
Torque:
Approx. 21.0 Nm @ 6000 rpm (manufacturer data may vary)
Fuel Tank Capacity:
12 Liters (approx.)
Fuel Type:
Unleaded gasoline
Crash Test Ratings:
Not typically subjected to automotive-style crash testing; focus on rider safety features.
Braking System:
Linked-Brake System (LBS) with front dual disc and rear single disc brakes.
Lighting:
Halogen headlight, LED taillight, and front/rear turn signals.
Body Structure:
Steel frame construction with protective body panels.
Instrument Cluster:
Analog tachometer, digital speedometer, fuel gauge, odometer, trip meter, and indicator lights.
Linked Braking System:
The Linked-Brake System (LBS) applies front and rear brakes simultaneously when either brake lever is actuated, enhancing braking stability.
Charging Port:
No integrated USB or 12V charging port typically found on this model; aftermarket solutions available.
Engine Oil Change:
Every 3,000 km or 6 months, whichever comes first.
Oil Filter Replacement:
At every engine oil change.
Air Filter Cleaning/Replacement:
Check every 5,000 km, replace as needed.
Spark Plug Replacement:
Check every 10,000 km, replace as needed.
Cvt Belt Inspection:
Inspect every 10,000 km, replace according to wear indicators.
Engine Oil Type:
Yamalube 4 (SAE 10W-40) or equivalent API SG or higher.
Engine Oil Capacity:
1.80 Liters (without oil filter change), 1.90 Liters (with oil filter change).
Coolant Type:
Ethylene glycol based antifreeze coolant (50% mixture).
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Common Wear Items:
CVT belt wear, brake pad wear, and potential for minor electrical gremlins if not maintained.
Performance Considerations:
Some users report a slightly sluggish acceleration compared to sportier scooters, but it excels in comfort and stability.
Manufacturer Heritage:
Yamaha Motor Corporation is a Japanese manufacturer of motorcycles, marine products, and other motorized products. Renowned for innovation and performance in motorsports.
Introduction Year:
The Morphous 250 was introduced in 2005 (for the 2006 model year) as Yamaha's entry into the maxi-scooter market, aiming for comfort and style.
Design Philosophy:
The design emphasized a car-like driving position and enhanced comfort for longer journeys, a departure from more traditional scooter designs.
Manufacturing Location:
Primarily manufactured in Japan.
