Segment:
Dual-sport / Enduro motorcycle
Competitors:
Honda CRF250L, Kawasaki KLX250, Suzuki DR-Z250
Purpose:
Versatile off-road and on-road capability, known for reliability and ease of maintenance
Engine:
Detailed breakdown, lubrication, cooling, fuel, ignition, starting, exhaust, emissions
Chassis:
Frame, suspension (front forks, rear shock absorber), steering, wheels, tires, brakes (front and rear)
Electrical:
Battery, charging system, ignition system, lighting, instrumentation, wiring diagrams
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, brake pad inspection/replacement, spark plug service
Troubleshooting:
Diagnostic procedures for common problems, circuit testing, symptom analysis
Repair:
Engine overhauls, carburetor tuning, transmission servicing, suspension component replacement, electrical component repair, brake system repair
Depth:
Comprehensive, covering from basic checks to complete engine and chassis rebuilds
Engine Type:
Four-stroke, DOHC, single-cylinder
Bore X Stroke:
73.0 mm x 59.5 mm
Compression Ratio:
12.5:1
Horsepower:
Approximately 20-23 HP (varies by specific market and tune)
Torque:
Approximately 14-16 lb-ft (varies by specific market and tune)
Fuel Delivery:
Mikuni BST34 carburetor
Fuel Capacity:
2.6 gallons (9.8 Liters)
Fuel Type:
Unleaded gasoline, 91 octane or higher recommended
Oil Capacity:
1.7 Liters (with filter change)
Recommended Oil:
Yamalube 4 (or equivalent) SAE 10W-40 API SE, SF, SG or SH classification with JASO MA standard
Crash Safety:
Not applicable (motorcycle)
Braking System:
Front: 245mm disc; Rear: 220mm disc
Suspension Features:
Front: Telescopic forks, 10.0 inches travel; Rear: Swingarm, Monocross suspension, 9.1 inches travel
Lighting:
Halogen headlight, LED taillight, turn signals
Display:
Analog speedometer, tachometer, odometer, trip meter, indicator lights (neutral, turn signal, high beam)
Ignition System:
CDI (Capacitor Discharge Ignition)
Oil Change Interval:
Every 3,000 km (1,864 miles) or 6 months, whichever comes first
Air Filter Cleaning:
Every 1,000 km (621 miles) or 3 months
Spark Plug Replacement:
Every 6,000 km (3,728 miles) or 12 months
Valve Clearance Check:
Every 6,000 km (3,728 miles) or 12 months
Coolant Type:
Permanent type antifreeze coolant (mixture of 50% ethylene glycol and 50% deionized water)
Common Wear Items:
Clutch plates, brake pads, chain and sprockets, fork seals, carburetor jetting needing periodic adjustment
Electrical Concerns:
Occasional issues with rectifier/regulator or stator, especially on higher mileage units.
Engine Performance:
Carburetor tuning can be sensitive to altitude and temperature changes, requiring attention for optimal performance.
Manufacturer Heritage:
Yamaha Motor Corporation, founded in 1955, is a renowned Japanese manufacturer of motorcycles, marine products, and other motorized vehicles. Known for performance, innovation, and durability.
Ttr Series Context:
The TTR line represents Yamaha's off-road focused motorcycles, offering a range of displacements for various skill levels. The TTR250 bridges the gap between smaller play bikes and larger competition machines.
Manufacturing Location:
Japan (Primary)
