Segment:
Maxi-scooter, premium urban commuter
Target Audience:
Commuters seeking comfort, style, and practicality; riders looking for a premium two-wheeled experience.
Key Competitors:
Suzuki Burgman 400, Honda Silver Wing 600 (though larger), Kymco Xciting 500 (also larger but in the premium scooter space).
Design Philosophy:
Blends motorcycle-like ergonomics with scooter convenience, featuring a unique, futuristic design.
Comfort And Ergonomics:
Spacious riding position, excellent wind protection, comfortable seat designed for longer rides.
Storage:
Generous under-seat storage, often capable of holding a full-face helmet and more.
Engine:
Detailed engine overhaul, diagnostics, timing, fuel injection system, lubrication system, cooling system
Transmission:
Automatic transmission (CVT) operation, maintenance, troubleshooting, internal components
Chassis And Suspension:
Front fork, rear shock absorber, swingarm, steering system, wheel bearings
Brakes:
Front and rear brake system maintenance, hydraulic system, pad replacement, caliper overhaul, bleeding procedures
Electrical System:
Wiring diagrams, battery, charging system (stator, regulator/rectifier), ignition system, lighting, starter motor, ECU diagnostics
Fuel System:
Fuel tank, fuel pump, fuel filter, fuel injection system (throttle body, injectors), emissions control
Bodywork And Trim:
Panel removal and installation, seat, fairings, storage compartment
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug service, coolant checks, brake fluid flush
Troubleshooting:
Diagnostic flowcharts for common and uncommon problems, fault code interpretation
Repair:
Step-by-step repair instructions for all major components, engine rebuild procedures, transmission overhaul
Assembly Disassembly:
Detailed diagrams and instructions for component removal and reinstallation
Depth:
Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, including advanced electrical diagnostics and troubleshooting.
Engine Type:
Four-stroke, liquid-cooled, SOHC, 4-valve
Displacement:
249 cc (249.4 cc)
Bore X Stroke:
70.0 mm x 64.9 mm
Compression Ratio:
11.1:1
Horsepower:
Approximately 20.7 hp @ 7,500 rpm (actual figures may vary slightly by region)
Torque:
Approximately 21.4 Nm (15.8 lb-ft) @ 6,000 rpm (actual figures may vary slightly by region)
Fuel Delivery:
Fuel Injection (Yamaha's FI system)
Fuel Type:
Unleaded gasoline, 87 octane or higher
Ignition System:
TCI (Transistor Controlled Ignition)
Oil Type:
Yamalube 4 (or equivalent API SG, JASO MA certified 10W-40 or 20W-50)
Oil Capacity:
1.9 L (2.0 US qt) without filter change; 2.1 L (2.2 US qt) with filter change
Cooling System:
Liquid-cooled
Coolant Type:
Permanent type antifreeze coolant, 50% solution with distilled water. Yamaha recommends Yamalube Coolant.
Crash Safety:
N/A (Vehicle safety ratings are typically for cars; motorcycle/scooter safety focuses on design and active features.)
Braking System:
Front: Hydraulic disc; Rear: Hydraulic disc. Linked braking system (Linked-Brake System - UBS) may be present depending on market.
Lighting:
Halogen headlights, LED taillight, standard turn signals.
Frame Construction:
Steel frame, designed for stability and rider support.
Ergonomics:
Designed for a comfortable and controlled riding position, enhancing rider awareness.
Instrument Cluster:
Digital and analog combination display, including speedometer, tachometer, fuel gauge, odometer, trip meter, clock, and indicator lights.
Braking Assistance:
Optional Linked-Brake System (UBS) for integrated braking feel.
Storage Features:
Large under-seat storage compartment, often with interior lighting; glove box storage.
Engine Oil Change:
Every 3,000 km (2,000 miles) or 6 months, whichever comes first.
Oil Filter Replacement:
Every 6,000 km (4,000 miles) or 12 months.
Air Filter Cleaning:
Every 3,000 km (2,000 miles); replace if necessary.
Spark Plug Service:
Inspect every 6,000 km (4,000 miles); replace as needed. (Refer to manual for correct gap).
Coolant Replacement:
Every 2 years or 40,000 km (24,000 miles).
Brake Fluid Replacement:
Every 2 years or 20,000 km (12,000 miles).
Engine Oil Spec:
Yamalube 4 (or equivalent API SG, JASO MA certified 10W-40 or 20W-50)
Coolant Spec:
Permanent type antifreeze coolant, 50% solution with distilled water (Yamalube Coolant recommended)
Common Wear Items:
Drive belt (CVT), brake pads, tires, wheel bearings, throttle body deposits (typical for fuel injected engines).
Potential Electrical:
Regulator/rectifier failure can occur on many Yamaha models of this era; check charging system if battery issues arise.
Fuel System Maintenance:
Regular injector cleaning and fuel filter replacement are recommended for optimal performance of the FI system.
Yamaha Motorcycles:
Yamaha Motor Company has a long-standing reputation for innovation, performance, and quality in motorcycles and powersports since its founding in 1955.
Morpheus Introduction:
The Morphous was introduced in the mid-2000s as a high-end maxi-scooter aimed at the premium segment, offering a blend of comfort, performance, and unique styling.
Production Period:
The model was produced roughly from 2005/2006 to 2008, with the service manual covering the primary production years.
