Motorcycle Segment:
Dual-sport / Off-road Enduro
Target Audience:
Enthusiasts, trail riders, off-road adventurers, daily commuters seeking versatility
Key Competitors:
Honda XR250, Kawasaki KLX250, Suzuki DR-Z250, KTM EXC 200/250
Vehicle Usp:
Reliable 4-stroke engine, robust build for off-road use, street-legal capability, user-friendly maintenance
Manual Value Proposition:
Comprehensive diagnostic and repair information empowering owners to maintain and fix their TT-R250
Engine Systems:
Top End (Cylinder, Piston, Valves), Bottom End (Crankshaft, Connecting Rod, Bearings), Cooling System, Lubrication System, Ignition System, Fuel System (Carburetor, Fuel Pump), Exhaust System
Transmission Systems:
Clutch System, Gearbox Internals, Shift Mechanism, Transmission Fluid Maintenance
Chassis Systems:
Frame, Suspension (Front Forks, Rear Shock), Steering System, Braking System (Front and Rear), Wheel and Tire Servicing, Chain and Sprocket Maintenance
Electrical Systems:
Wiring Diagrams, Lighting System, Ignition System Components, Battery Maintenance, Charging System, Starter Motor, Switches and Relays
Bodywork And Maintenance:
Body Panels, Decals, Seat, Handlebars, Footpegs, General Cleaning and Care
Routine Maintenance:
Oil Changes, Filter Replacements, Chain Adjustments, Brake Pad Replacement, Air Filter Cleaning/Replacement, Spark Plug Replacement, Valve Clearance Checks
Troubleshooting:
Diagnostic procedures for common starting, running, and electrical issues; Fault code interpretation (if applicable)
Engine Rebuild:
Complete engine disassembly, inspection, repair, and reassembly procedures
Transmission Repair:
Gearbox component replacement, clutch overhaul, shift drum and fork servicing
Suspension Service:
Fork seal replacement, damper rod servicing, rear shock absorber maintenance and adjustment
Braking System Overhaul:
Caliper rebuilding, master cylinder servicing, bleeding procedures
Electrical Diagnostics And Repair:
Component testing, wiring harness repair, charging system analysis
Diagnostic Capabilities:
Detailed diagnostic charts, symptom-based troubleshooting guides
Repair Procedures:
Step-by-step instructions with clear diagrams and torque specifications for all major repairs
Special Tools:
Identification of specialized tools required for specific procedures
Engine Type:
4-stroke, DOHC, 4-valve, Single Cylinder
Displacement:
249 cc (249cc)
Bore X Stroke:
73.0 mm x 59.6 mm
Compression Ratio:
10.5:1
Cooling System:
Liquid-cooled
Horsepower Estimate:
Approx. 26-28 HP (Varies by region and tuning)
Torque Estimate:
Approx. 23-25 Nm (Varies by region and tuning)
Carburetor Type:
Mikuni BSR32 (or similar) CV carburetor
Fuel Type:
Unleaded gasoline, minimum 87 octane
Safety Certification:
Not applicable for motorcycles in traditional automotive safety rating sense (e.g., NHTSA, Euro NCAP)
Braking System:
Hydraulic Disc Brakes (Front and Rear)
Lighting:
Halogen Headlight, LED Taillight, Turn Signals
Frame Construction:
Steel semi-double cradle frame
Engine Oil Change:
Every 3,000 km (1,800 miles) or 6 months
Oil Filter Replacement:
Every 6,000 km (3,600 miles) or 12 months (or with every oil change if preferred)
Air Filter Cleaning:
Every 1,000 km (600 miles) or as needed based on riding conditions
Valve Clearance Check:
Every 10,000 km (6,000 miles)
Spark Plug Replacement:
Every 6,000 km (3,600 miles) or as needed
Engine Oil:
Yamalube 10W-40 or API SG/SH/SJ/SL, JASO MA
Coolant:
Yamaha's permanent type anti-freeze (50% mixture with distilled water)
Common Wear Items:
Clutch plates, chain and sprockets, brake pads, fork seals, wheel bearings
Potential Engine Concerns:
Carburetor jetting may require adjustment for altitude or modifications; occasional starter clutch wear
Electrical Notes:
Ensure good battery connections; potential for stator or rectifier issues over time
Yamaha Motorcycles:
Yamaha Motor Corporation has a long-standing reputation for producing reliable and performance-oriented motorcycles across various segments, including off-road and dual-sport.
Tt R Series Lineage:
The TT-R line has been a staple for Yamaha's off-road offerings, evolving from earlier two-stroke models to the 4-stroke TT-R250, focusing on accessibility and reliability.
Production Period:
The TT-R250 was produced for a significant period, with the 1999-2006 models representing a specific iteration of this popular dual-sport.
