Segment:
Muscle/Naked Sportbike
Target Audience:
Riders seeking raw power, minimalist design, and a visceral riding experience.
Key Competitors 2005:
Harley-Davidson Sportster, Triumph Bonneville, Ducati Monster series.
Engine Character:
Massive torque delivery, characterful V-twin rumble.
Design Philosophy:
Focus on essential motorcycle elements, exposed mechanicals.
Engine:
Detailed coverage of the 1670cc V-twin engine, including disassembly, assembly, timing, valve adjustment, lubrication, and cooling system.
Fuel System:
Fuel injection system diagnosis and repair, throttle body servicing, fuel pump and filter replacement, ECU mapping information.
Transmission:
5-speed constant mesh gearbox, clutch operation and adjustment, transmission disassembly and assembly, gearbox component specifications.
Electrical System:
Wiring diagrams, ignition system troubleshooting, lighting circuits, starter motor and charging system diagnosis, battery maintenance.
Brakes:
Front and rear brake system maintenance, hydraulic fluid replacement, caliper and master cylinder servicing, rotor inspection.
Suspension:
Front and rear suspension fork servicing, shock absorber adjustment and replacement, linkage maintenance.
Chassis:
Frame inspection, steering head bearing service, swingarm maintenance.
Bodywork:
Fairing removal and installation, seat servicing, fender replacement.
Routine Maintenance:
Oil and filter changes, air filter replacement, chain adjustment and lubrication, spark plug replacement, brake fluid bleeding.
Troubleshooting:
Diagnostic flowcharts for common performance issues, electrical faults, and starting problems.
Major Repairs:
Engine rebuild procedures, transmission overhaul, suspension component replacement, electrical system diagnosis and repair.
Technical Specifications:
Torque specifications for all fasteners, engine clearances, fluid capacities, electrical component resistance values.
Depth:
Comprehensive, suitable for professional technicians and advanced DIY mechanics.
Engine Type:
Air-cooled, 4-stroke, SOHC, 4-valve V-twin
Bore X Stroke:
97.0 mm x 116.0 mm
Horsepower Est:
90 HP @ 4,750 RPM (Approximate)
Torque Est:
150 Nm @ 3,750 RPM (Approximate)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Throttle Body Size:
43 mm
Fuel Type:
Unleaded gasoline, minimum 90 octane
Dashboard Display:
Analog tachometer, digital speedometer, odometer, trip meter, fuel gauge, clock, indicator lights.
Rider Aids:
None (This model emphasizes a raw, unassisted riding experience).
Connectivity Features:
None.
Oil Change Interval:
Every 6,000 km (3,700 miles) or 6 months.
Valve Clearance Check:
Every 24,000 km (15,000 miles).
Air Filter Cleaning:
Every 12,000 km (7,500 miles).
Engine Oil Spec:
Yamalube 4 (or equivalent SAE 20W-40 API SG or higher)
Coolant Spec:
Ethylene glycol-based non-abrasive coolant with antifreeze and corrosion protection. Refer to manual for specific mixture ratio.
Brake Fluid Spec:
DOT 4 Hydraulic Brake Fluid.
Engine Oil Capacity:
4.20 L (4.44 US qt) without filter change, 4.50 L (4.76 US qt) with filter change.
Common Wear Items:
Clutch plates (especially with aggressive riding), chain and sprockets, rear tire wear.
Potential Electrical:
Occasional issues with regulator/rectifier in some units, though less common than other models.
Fuel System Considerations:
Injector cleaning may be required periodically to maintain optimal performance.
