About the Yamaha YFM400FW
Carburetor, rear drum-brake and starter repairs for FW-model ATVs.
Yamaha’s history identifies the early YFM400FW as the Kodiak 400 4x4. Later 400-class ATV names and codes vary, so the full frame designation and fitted components remain the practical reference when ordering.
Choose float-valve and air-cut parts separately
The float needle and seat control fuel entering the carburetor and list 1993–1998 YFM400FW. Air-cut valves service another carburetor circuit, with separate 1993–1998 and 2000–2001 options; neither confirms 1999. Rear shoes list 1993–1999, while the starter motor shown here lists 1999 only.
Model and application differencesCompare your YFM400FW repair options
| Model or repair | What to check |
|---|---|
| 1993–1998 carburetor parts | Float needle/seat and early air-cut valve are different components with the same listed year range. |
| 2000–2001 air-cut valve | A separate valve is featured; neither air-cut link confirms 1999. |
| 1999 starter | The linked starter covers this single FW-model year. |
Frame, engine and component markingsYamaha YFM400FW identification
Use the complete frame/model identification and the correct market documentation. Identify a replacement engine, carburetor or front end separately from the frame.
- Keep the full FW suffix and any additional year/market code from the model label.
- Compare the air-cut diaphragm and cover with the carburetor fitted to the ATV.
- Check rear drum position, shoe dimensions and the starter’s mounting/drive arrangement.
A shared model prefix or similar appearance does not establish the model year or parts fitment.