2003 Yamaha BANSHEE Service and Repair Manual

Model code YFZ350LER is the 2003 Banshee, and it belongs to the later manual, LIT-11616-YF-37.

That book covers 2002 to 2006. Yamaha split the model's service literature at 2002, so a 2003 machine is documented here and not in the volume used for the earlier years. Worth checking, because the two look similar on a listing and are not interchangeable.

Inside are the factory procedures for engine teardown and reassembly with the specified measurements, fuel system and carburetor service, clutch, transmission and final drive, brake and suspension work, and the electrical system with wiring diagrams. Tightening torques and wear limits appear alongside the relevant steps, and the troubleshooting material follows Yamaha's diagnostic sequence.

The wiring diagrams are complete rather than simplified, which is the difference between tracing a circuit and guessing at it. Model codes shift through these five years, so confirm YFZ350LER against the identification on your own machine before ordering.