Market Segment:
Cruiser motorcycle, performance cruiser
Competitors 2006:
Harley-Davidson Softail series, Indian Chief, Honda VTX 1800, Kawasaki Vulcan 2000
Vehicle Strengths:
Powerful V-twin engine, comfortable riding position, iconic styling, shaft drive for low maintenance
Dealership Equivalence:
Provides the same technical information and repair procedures used by authorized Yamaha dealerships and certified technicians
Diy Enablement:
Empowers owners to perform maintenance, repairs, and diagnostics with confidence
Engine:
Disassembly, assembly, lubrication, cooling, fuel delivery, ignition, emission control, starting, charging
Transmission:
Clutch operation, gearbox inspection, repair, maintenance, shaft drive system
Chassis:
Frame inspection, suspension (front fork and rear shock absorber), steering system, wheel and tire service, brake system (hydraulic front and rear), drive train
Electrical:
Wiring diagrams, battery, charging system, ignition system, lighting system, instrumentation, switches, starters, fuses, relays
Fuel System:
Carburetor (or fuel injection system for specific variants if applicable), fuel tank, fuel pump, fuel lines
Exhaust System:
Muffler, exhaust pipes, catalytic converter (if equipped), inspection and replacement
Bodywork And Trim:
Fenders, fuel tank cover, seat, fairings (if applicable), handlebars, controls
Routine Maintenance:
Oil changes, filter replacement, chain adjustment, brake fluid checks, tire pressure checks, spark plug replacement, air filter service
Troubleshooting:
Diagnostic flowcharts for common problems related to engine performance, starting issues, electrical faults, braking concerns
Component Repair:
Detailed step-by-step instructions for rebuilding engines, transmissions, carburetors/fuel injectors, brake calipers, suspension components
Adjustments:
Valve clearance adjustments, idle speed settings, throttle cable adjustments, clutch lever adjustments
Diagnostics:
Component testing, electrical circuit analysis, specification checks (e.g., compression, resistance)
Wiring Schematics:
Comprehensive, color-coded wiring diagrams for all electrical systems
Depth:
Comprehensive, covering all aspects from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and specifications
Engine Type:
Air-cooled, 4-stroke, SOHC, V-twin
Displacement:
1670 cc (102 cubic inches)
Bore X Stroke:
97.0 mm x 113.0 mm
Valve Configuration:
SOHC, 4 valves per cylinder (pushrod actuated for intake/exhaust)
Cooling System:
Forced air cooling with oil cooling assist (oil cooler typically standard)
Horsepower:
Approximately 80-90 HP (Manufacturer estimates may vary)
Torque:
Approximately 100-110 lb-ft (Manufacturer estimates may vary)
Fuel Delivery:
Mikuni BS40 carburetors (dual, 40mm bore) for standard Warrior; Midnight often features same or similar carburetion.
Fuel Capacity:
4.5 US gal (17 L)
Oil Type Spec:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher (refer to manual for precise specification)
Oil Capacity With Filter:
Approx. 4.3 US qt (4.1 L)
Safety Certification:
Meets all applicable US EPA and DOT regulations for 2006 model year.
Braking System Front:
Dual 298mm hydraulic disc brakes with 4-piston calipers
Braking System Rear:
282mm hydraulic disc brake with 2-piston caliper
Tire Front:
130/70R18 M/C 63H
Tire Rear:
190/50ZR17 M/C 73W
Lighting:
Halogen headlight, LED tail light, amber turn signals
Instrumentation:
Analog speedometer, tachometer, fuel gauge, warning lights (oil pressure, neutral, turn signals, high beam)
First Service:
Typically at 600 miles (1000 km) - includes oil change, filter check, chain adjustment, general inspection. Refer to manual for exact requirements.
Regular Oil Change:
Every 3,000-4,000 miles (5,000-6,000 km) or annually. Refer to manual.
Valve Clearance Check:
Typically every 12,000-15,000 miles (20,000-24,000 km). Refer to manual for precise interval and procedure.
Brake Fluid:
DOT 4 hydraulic brake fluid
Coolant Type:
N/A (Air-cooled engine with oil cooler)
Common Wear Items:
Clutch plates, brake pads, tires, drive shaft splines (require periodic greasing), spark plugs.
Potential Issues:
Starter clutch wear (rare), carburetor jetting sensitivity to exhaust/air filter modifications, regulator/rectifier failure (less common on this model).
Engine Performance Checks:
Manual covers compression testing, cylinder leak-down tests, carburetor synchronization, and fuel mixture adjustments.
Yamaha Motorcycle Legacy:
Yamaha Motor Company, founded in 1955, is renowned for its innovation, performance, and reliability across a wide range of powersports vehicles.
Road Star Lineage:
The Road Star line was introduced in 1999 as Yamaha's flagship cruiser, evolving over the years to include various trims and performance-oriented models like the Warrior.
Warrior Introduction:
The Road Star Warrior, introduced for the 2002 model year, marked a departure towards a sportier, more performance-oriented cruiser, featuring a stiffer chassis and upgraded suspension and braking.
Manufacturing Location:
Japan (assembly for global markets)
Model Production Years:
2002-2012 (Road Star Warrior)
