Segment:
Lightweight dual-sport motorcycle, known for off-road capability and versatility
Competitors:
Honda XR series, Kawasaki KLR series, Suzuki DR-Z series
Features Of Vehicle:
Durable air-cooled engine, capable suspension, reliable performance for trail riding and light street use
Value Proposition Of Manual:
Provides in-depth technical knowledge essential for maintaining and repairing the Yamaha TTR 250, reducing reliance on external service centers.
Primary Coverage:
Repair, Maintenance, Troubleshooting, Diagnostics
Secondary Coverage:
Component Removal & Installation, Electrical Schematics, Specifications
Type:
Factory Service Manual / Repair Manual
Engine:
Complete overhaul, top-end and bottom-end procedures, valve adjustment, timing, lubrication system, cooling system
Fuel System:
Carburetor disassembly, cleaning, adjustment, fuel pump, fuel lines
Transmission:
Clutch operation and adjustment, gearbox inspection and repair, gear ratios, shift mechanism
Electrical System:
Ignition system, charging system (stator, regulator/rectifier), lighting, starting system, wiring diagrams, component testing
Chassis:
Frame inspection, suspension (forks, shock absorber) overhaul and adjustment, steering system, wheel bearings
Brakes:
Front and rear brake caliper service, master cylinders, brake fluid flush and bleeding, pad replacement
Bodywork And Trim:
Panel removal and installation, seat, fuel tank, fenders
Maintenance:
Oil changes, filter replacements, chain maintenance, spark plug replacement, air filter cleaning/replacement, brake adjustments
Troubleshooting:
Diagnostic flowcharts for common issues (starting problems, engine performance issues, electrical faults)
Repair:
Complete engine rebuilds, transmission component replacement, suspension servicing, electrical component repair
Special Tools:
Listing and usage of specialized tools required for specific procedures
Depth:
Comprehensive, suitable for professional technicians and advanced DIY enthusiasts
Diagnostic Level:
Detailed diagnostic procedures, including fault code interpretation (if applicable) and component testing methods
Type:
Four-stroke, SOHC, air-cooled
Bore X Stroke:
73.0 mm x 59.6 mm
Compression Ratio:
10.2:1
Horsepower Estimated:
20-25 hp @ 7500 rpm (approximate, varies by market and tune)
Torque Estimated:
17-20 lb-ft @ 6000 rpm (approximate, varies by market and tune)
Carburetor:
Mikuni BSR33 / BSR34 (check specific model variant)
Fuel Type:
Unleaded gasoline, 87 octane or higher
Oil Type:
SAE 10W-40 Motorcycle Oil (API SG or higher)
Oil Capacity With Filter:
1.7 L (1.8 US qt)
Ignition System:
CDI (Capacitor Discharge Ignition)
Cooling Method:
Air-cooled
System:
Basic analogue instrumentation (speedometer, odometer, trip meter, neutral indicator, high-beam indicator, turn signal indicator). No advanced infotainment features.
Features:
No electronic driver assistance systems are present on this model.
Features:
No connectivity features are integrated.
Engine Oil Change:
Every 3000 km (1860 miles) or 6 months, whichever comes first.
Oil Filter Replacement:
Every 6000 km (3720 miles) or 12 months.
Air Filter Cleaning:
Every 1000 km (620 miles) or more frequently in dusty conditions.
Spark Plug Inspection Replacement:
Inspect every 6000 km (3720 miles); replace as needed.
Valve Clearance Check:
Every 12000 km (7440 miles).
Brake Fluid:
DOT 3 or DOT 4 (refer to manual for specific Yamaha recommendation)
Coolant:
N/A (Air-cooled)
Common Problems:
Carburetor jetting sensitivity to altitude, occasional clutch wear on high-mileage units, fork seal leaks if subjected to harsh off-road use.
Mitigation:
Proper jetting adjustments, regular clutch adjustment and maintenance, and inspecting fork seals for damage are recommended.
Yamaha Motorcycles:
Yamaha has a long-standing reputation for producing high-performance and reliable motorcycles across various disciplines, including off-road and dual-sport.
Ttr Series:
The TTR series is Yamaha's line of trail-oriented off-road motorcycles, known for their durability and ease of use. The TTR250 specifically bridges the gap between smaller trail bikes and larger dual-sport models.
Production Years:
The TTR250 was produced in various forms from the mid-1990s through the 2000s, with the 2003 model representing a mature iteration of the design.
