Servicing a 1996 Timberwolf 2WD means working to the figures Yamaha set for model code YFB250H. Those figures are in LIT-11616-YB-27.
One book, several machines
Yamaha documented the Timberwolf line together. Model years 1992 through 1998 are all in here, and the 4WD variant shares the volume, so sections that differ between drivetrains say so directly. Read the code on your frame first, then follow the branch that matches it.
Practical content includes the maintenance schedule with the adjustment steps behind it, full engine and gearbox disassembly and reassembly, carburetor settings, ignition and charging tests with the resistance and voltage values to expect, and chassis work from wheel bearings to brake shoes.
Wiring diagrams cover the complete harness, and the troubleshooting tables work from the symptom back to the likely cause. It is dry reading, which is what you want when the machine is in pieces and you need the next torque value rather than a paragraph of encouragement.
