Original Market Segment:
Versatile dual-sport motorcycle designed for on-road and off-road use, appealing to trail riders and commuters
Key Competitors:
Honda CRF250X, Kawasaki KLX250S, Suzuki DR-Z250
Vehicle Philosophy:
Reliable, user-friendly dual-sport with off-road capability and reasonable on-road manners
Manual Value Proposition:
Provides dealership-level repair and maintenance information, enabling owners to perform tasks themselves, saving money and downtime.
Engine:
Complete engine disassembly, assembly, inspection, and repair
Fuel System:
Carburetor service, fuel pump, fuel tank, lines, and filters
Ignition System:
CDI unit, ignition coil, spark plug, wiring, troubleshooting
Cooling System:
Oil cooler, oil lines, oil pump, lubrication system
Transmission:
Clutch operation, gear shifting mechanism, transmission disassembly and assembly
Suspension:
Front fork (telescopic, cartridge type) disassembly, service, and adjustment; rear shock absorber (monoshock) service and adjustment
Brakes:
Front and rear hydraulic disc brakes, caliper service, master cylinder service, bleeding procedures
Electrical System:
Wiring diagrams, lighting, charging system (stator, regulator/rectifier), starter motor, battery, horn, instrumentation
Chassis And Frame:
Frame inspection, swingarm, bearings, and related components
Wheels And Tires:
Wheel bearing service, tire replacement, spoke tensioning
Bodywork And Trim:
Fenders, seat, fuel tank cover, side panels removal and installation
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, brake inspections, air filter cleaning/replacement
Troubleshooting:
Diagnostic charts for common issues and symptoms
Repair Procedures:
Step-by-step instructions for component removal, repair, and reinstallation
Specifications:
Torque specifications for all fasteners, clearances, and adjustments
Wiring Diagrams:
Detailed electrical schematics for accurate diagnosis and repair
Depth:
Comprehensive, from basic maintenance to complete engine and transmission rebuilds
Engine Type:
Four-stroke, SOHC, 2-valve
Displacement:
249 cc (15.2 cu. in.)
Bore X Stroke:
73.0 mm x 58.8 mm (2.87 in x 2.31 in)
Compression Ratio:
9.5:1 (typical for this model)
Cooling Method:
Air-cooled
Lubrication System:
Wet sump with oil cooler
Horsepower:
Approx. 21-23 HP (at crankshaft, varies slightly by region and tuning)
Torque:
Approx. 14-16 lb-ft (at crankshaft, varies)
Carburetor Type:
Mikuni BSR34 (typical)
Fuel Capacity:
Approximately 2.6 gallons (9.8 Liters)
Length:
Approx. 84.8 inches (2155 mm)
Width:
Approx. 32.3 inches (820 mm)
Height:
Approx. 47.4 inches (1205 mm)
Wheelbase:
Approx. 56.1 inches (1425 mm)
Dry Weight:
Approx. 275.8 lbs (125 kg)
Curb Weight:
Approx. 288.8 lbs (131 kg)
Safety Features:
N/A (Motorcycle safety is typically assessed by rider skill and component integrity, not crash ratings)
Braking System:
Hydraulic disc brakes front and rear for reliable stopping power
Lighting:
Headlight, taillight, brake light, and turn signals for visibility
Infotainment System:
N/A (Basic motorcycle instrumentation)
Rider Aids:
N/A (No electronic rider aids like ABS or traction control)
Dashboard Features:
Analog speedometer, odometer, trip meter, engine hour meter, neutral indicator, high beam indicator, turn signal indicators.
Engine Oil Change:
Every 2,000 km or 6 months (refer to manual for specific interval based on usage)
Oil Filter Replacement:
At every oil change
Air Filter Cleaning:
Every 1,000 km or as needed based on conditions
Spark Plug Inspection:
Every 4,000 km
Valve Clearance Check:
Every 8,000 km
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher, JASO MA certified
Engine Oil Capacity:
1.60 L (1.69 US qt) without filter change, 1.80 L (1.90 US qt) with filter change
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid
Coolant Type:
N/A (Air-cooled)
Common Wear Items:
Clutch plates, brake pads, wheel bearings, chain and sprockets are typical wear items requiring periodic replacement.
Carburetor Tuning:
Carburetor may require tuning or cleaning due to altitude changes or prolonged storage.
Electrical Connections:
Corrosion in electrical connectors can lead to intermittent issues, particularly in off-road environments.
Yamaha Legacy:
Yamaha has a long-standing reputation for producing reliable and performance-oriented motorcycles across various disciplines, including off-road and dual-sport.
Tt-R Lineage:
The TT-R line represents Yamaha's commitment to off-road performance, with the TT-R250 bridging the gap between pure dirt bikes and more road-biased dual-sports.
Production Years:
The TT-R250 was produced through multiple generations, with significant updates over its lifespan. The 2005 model represents a mature iteration of the design.
