1992-2000 Yamaha Timberwolf 250 / YFB250 Service Manual

Yamaha Timberwolf 250 technical guide detailing engine overhaul, drive train, chassis, and electrical system repairs. Includes part number YFB250.

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Yamaha Models Covered & Key Technical Specifications

Models: Yamaha YFB250 Timberwolf 250 (YFB250(D) '92)
Sub-models / Variants: USA, CDN (Canada), CH (Switzerland), GB (Great Britain), AUS (Australia), NZ (New Zealand), ZA (South Africa), OCE (Oceania)
Trade Names: Timberwolf
Build Years: 1992–2000
Serial Numbers: USA: JY44BDA0NA000101, 4BD-000101; CDN: JY44BDN0NA031101, 4BD-031101; AUS: JY44BDT0*NA050101, 4BD-050101
Technical Data:

  • Engine: Air-cooled 4-stroke gasoline, SOHC, single cylinder
  • Displacement: 229.6 cc
  • Transmission: Constant Mesh 5-Speed with automatic centrifugal clutch
  • Drive System: Shaft drive
  • Starting System: Electric and Recoil starter (except USA)
  • Compression Pressure: 900 kPa (128 psi) standard
  • Ignition System: C.D.I. with 12V flywheel magneto
  • Tire Size: Front AT22x7-10, Rear AT22x10-10
  • Engine Oil Capacity: 1.5 L (1.6 US qt) for periodic change
Technical Specifications
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Document Number / Seller:
26721 / Brian Ramirez
File Size:
36.51 MB
File Type:
ZIP
Language:
English
Pages:
400+
Printable:
Yes
Category:
ATV
Last updated / verified
Jul 15, 2025

Yamaha Manual Features & Content Preview

1992–2000 Yamaha YFB250 Timberwolf 250 Service Publication

  • Covers 1992–2000 Yamaha YFB250 Timberwolf 250 models, including international variants like USA, Canada, Australia, and New Zealand configurations
  • Official Yamaha publication P/N LIT-11616-YB-27, first edition dated September 1991
  • Features 11 dedicated chapters including comprehensive engine overhaul, chassis maintenance, drivetrain, electrical schematics, and fuel-system troubleshooting tables
  • File delivered as a direct download the moment payment clears
  • Stored against your account so you can retrieve it after a hard-drive loss
  • Full-text search finds any part number in seconds
  • Laid out for standard letter and A4 printing
  • This 1991 first edition is the primary factory reference for the YFB250(D) build, documenting all original specifications for the 4BD-series chassis and drivetrain components

Factory Documentation Scope

The 1992–2000 Yamaha YFB250 Timberwolf 250 technical documentation provides a detailed breakdown of all machine systems. This factory manual outlines the periodic maintenance intervals required to keep the SOHC engine in peak condition. Chapters include chassis inspections, steering system geometry, brake drum maintenance, and complete electrical component testing. The transmission and final drive sections offer specialized guidance on gear lash adjustment and shim selection. Every mechanical assembly is documented with exploded views and specific torque requirements to support accurate maintenance.

Specification and Reference Highlights

The 1992–2000 Yamaha YFB250 Timberwolf 250 specification section lists critical engine wear limits and fluid capacities for the 229.6 cc powerplant. Intake valve clearance is documented at 0.05–0.09 mm in the maintenance table. The 1992–2000 Yamaha YFB250 Timberwolf 250 engine oil capacity is specified at 1.5 liters during a standard change. Final drive oil capacity is documented at 0.13 liters for a total system fill. Ignition timing is fixed at 10° at 1,000 r/min, advancing to 30° at 6,000 r/min. Reference is for qualified users; always consult a certified technician before performing service on this equipment.

Manual FAQ, Purchase & Download Details

Is the YFB250 circuit diagram and electrical component location information included in the document? keyboard_arrow_down

Chapter 8 of the manual covers the electrical system and includes the circuit diagrams for the YFB250 models alongside descriptions of electrical components.

Can I download the manual immediately after purchase to access it on my electronic devices? keyboard_arrow_down

Service manual is provided in a digital PDF format for instant download upon successful payment. It is compatible with most standard PDF viewing applications, allowing for convenient access across your preferred electronic devices.

Does the specification section contain engine maintenance data and tightening torque ranges? keyboard_arrow_down

Chapter 2 of this document contains comprehensive specification tables covering engine maintenance requirements and general torque values for the covered models.

Are there exploded diagrams and parts illustrations provided for the engine and chassis systems? keyboard_arrow_down

Document includes exploded diagrams at the beginning of each major chapter to aid in identifying components. These illustrations display assembly sequences and help visualize the parts arrangement within the engine and chassis. These visual aids are intended to support the reference material presented in the service manual.

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