Part number LIT-11616-YB-27. Model code YFB250UJ. Those two identifiers are what connect this factory manual to your 1997 Timberwolf 2WD, and a buyer should check both.
The volume was written to cover the Timberwolf across 1992 to 1998, including the 4WD machine, so it carries the whole family rather than a single season. Where a specification changed partway through the run, the tables list it by year and code.
Work is organised the way a technician proceeds. Periodic maintenance and adjustment come first. Engine service follows, with measurements, service limits and tightening sequences. Then the fuel and electrical chapters, with test values for the ignition and charging circuits. Chassis chapters deal with suspension, steering, wheels, brakes and the drive components.
Wiring diagrams and symptom-based troubleshooting close it out. Nothing in here is rewritten or summarised from another source; it is the original Yamaha service information for this quad.
