2000-2001 Yamaha Big Bear 400 ATV Service Manual

2000–2001 Yamaha Big Bear 400 Service Manual Features

• Covers 2000–2001 Yamaha Big Bear 400 YFM400FWN series, including 5FU1 and 5FU2 California-compliant sub-models
• Official Yamaha publication P/N LIT-11616-13-22, first edition June 1999
• Contains 41 detailed technical data tables, including tightening torque values, lubrication charts, and wiring reference values
• Accessible from your device as soon as the order is placed
• No shipping wait — the PDF is available immediately after purchase
• Print resolution preserves exploded-view detail
• Indexed PDF search covers every chapter and appendix
• This first edition serves as the original baseline document for all 2000–2001 YFM400FWN mechanical and electrical maintenance procedures

Document Scope and Technical Highlights

Yamaha Big Bear 400 Manual Structure

This publication organizes technical procedures into nine core subject areas: general information, comprehensive specifications, periodic maintenance, engine overhaul, carburetion, drivetrain, chassis, electrical systems, and troubleshooting. The document provides detailed reference data on disassembly and reassembly, including specific instructions for the 5-speed transmission and constant mesh system. It also includes an illustrated symbol key to identify lubricants and special tools required for service operations.

Specification and Reference Data

Technical specifications are documented for the 386 cc air-cooled engine, covering valve clearance, piston-to-cylinder tolerances, and timing chain data. The service manual includes torque tables for fasteners ranging from M6 to M35, providing both Nm and ft-lb values. Electrical system data provides specific reference values for the C.D.I. unit, 14 A rectifier, and charging system outputs. Coolant, fluid, and oil capacities are listed for engine, final gear, and differential cases. The Yamaha Big Bear 400 service manual provides these reference values for maintenance and inspection intervals. The engine oil level is verified between dipstick marks at 3.5 L total capacity. Valve clearance for the intake is documented at 0.06–0.10 mm in the engine specification table. Differential gear case oil total capacity is documented at 0.2 L.

An official 100-page Yamaha OEM workshop manual covering the 2000–2001 Big Bear 400, documenting engine, chassis, electrical, and drive train specifications for the YFM400FWNM/NMC build.