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Description
FEATURES
- Black vinyl coil-wound housing
- Meets or exceeds OEM quality
- Inner nylon sleeve for longer life and smooth operation
Technical Specifications
- MFG. Part Number 05-0381
Vehicle Information
Yamaha IT250 Motorcycle - Dual-Sport (1977-1983)
The Yamaha IT250, an enduro motorcycle produced from 1977 to 1983, was renowned for its robust off-road capabilities. Powered by an air-cooled, two-stroke, single-cylinder engine of 246 to 247cc, it was derived from Yamaha's YZ motocross bikes and incorporated advanced features for its time, such as CDI ignition and Monoshock suspension. While engine displacement remained consistent, the IT250 series underwent significant updates over the years. Yearly designations (IT250D, E, F, G, H, J, K) served as trim levels, indicating evolutions in chassis design and horsepower. For instance, the steering head angle was adjusted in 1979 to improve steering precision. In 1980, the Yamaha Energy Induction System (YEIS) and capacitor discharge ignition were introduced. 1981 and 1982 models saw suspension improvements, while 1983 brought a notable change with an altered engine bore and stroke (68 x 68 mm) and a more angular aesthetic. The transmission, initially 5-speed, became a consistent 6-speed from 1980 onwards. FAQ:
Q: How can I find compatible parts for my Yamaha IT250?
R: Use our year and edition selector on this page to ensure exact compatibility with your model.
Maintenance
| Component | Interval | Details |
| Transmission Oil Change | Varies by year and riding conditions, generally between 10 and 20 hours for recreational use, and 5 to 10 hours for aggressive or harsh conditions. | These are two-stroke motorcycles; oil change refers to transmission oil. |
| Air Filter Service | Varies by year and riding conditions, generally between 5 and 15 hours. | Clean and re-oil the foam filter, inspect the airbox seal and intake boot. |
| Valve Inspections | 20 to 25 hours | |
| Top-End Inspections (Piston, Cylinder, Head) | Varies by year and riding conditions, generally between 30 and 60 hours for recreational use, and 20 to 40 hours for aggressive use. | Inspect piston, rings, and bore. Replace small-end bearing when piston is removed. |
| Bottom-End Inspections (Crankshaft and Bearings) | Varies by year and riding conditions, generally between 50 and 100 hours for recreational use, and 60 hours for aggressive use. | |
| Spark Plug | Regular check | Check spark plug condition during regular engine inspections. |