Yamaha Grizzly 450, 450 EPS, 450 IRS, 450 Hunter Edition, 450 Power Steering, 450 Special Edition 2006–2014 Service Manual (P/N 5TE-F8197-10)

• Coverage: The compiled set is labeled for 1995-2009 Yamaha Wolverine 350/450 applications and contains material identified by the YFM350FX, YFM350AS, YFM35XV, YFM450FAR, and YFM45FXV model codes. It does not provide Grizzly, EPS, IRS, Hunter, or Special Edition service chapters.
• Engine and transmission repair: Covers engine removal, top-end and crankcase disassembly, camshaft and valve work, cylinder and piston inspection, timing components, oil pump service, clutch and sheave assemblies, transmission repair, and middle-gear setup.
• Drivetrain and chassis work: Includes front constant-velocity joints, differential disassembly and gear-lash adjustment, rear axle and final drive service, hydraulic brake bleeding and inspection, steering repair, front suspension, rear shock absorber, and swingarm procedures.
• Electrical diagnosis: Provides circuit-based testing for CDI ignition, starting, charging, lighting, signaling, cooling-fan, and 2WD/4WD selecting systems, along with switch checks, connector identification, and system-specific troubleshooting.
• Technical reference material: Supplies component torque data, wear limits, clearances, fluid and lubricant specifications, electrical test values, cable-routing layouts, maintenance charts, and Yamaha special-tool numbers.
• 1,419-page PDF: 588 pages of 350-series service material, 475 pages of 450-series service material, a 169-page YFM350FXT owner’s manual, a 185-page YFM45FXV owner’s manual, and two compiled set pages.

This is a compiled manual set rather than one continuous Yamaha publication. Yamaha’s service notices state that the workshop material was produced primarily for dealers and qualified mechanics and assumes a basic understanding of mechanical principles and vehicle repair. It is therefore best suited to trained technicians or experienced owners who have the required tools and test equipment.

How the Service Material Fits Together

The earlier 350 coverage is built around the YFM350FX base service manual, referenced internally as Manual No. 4KB-28197-20, with separate model-year update sections. These supplements revise specifications, cable routing, brake adjustments, steering details, ignition testing, and wiring information where the later machines differ from the base configuration.

Later 350 data is carried through the YFM350AS supplement 5WH-F8197-10 / LIT-11616-17-33 and the YFM35XV supplement 3D5-F8197-10 / LIT-11616-19-80. The YFM35XV foreword specifically directs the mechanic to use those supplements with the YFM400FAR base manual 5TE-F8197-10 / LIT-11616-16-02 for complete procedures. The two supplements are present in this PDF, but a complete 5TE base service manual is not. This is an important limitation for buyers working on the YFM35XV configuration.

The 450 portion combines the YFM450FAR base material, referenced as Manual No. 5ND-F8197-10, with YFM45FXV-specific changes. The two owner’s manuals are separate references for controls, pre-operation inspections, riding safety, routine maintenance, cleaning, storage, and basic troubleshooting; they do not replace the workshop repair sections.

Model-Specific Repair and Diagnostic Depth

The specifications should not be treated as interchangeable across the set. The 350 material covers the 348 cm³ engine family, while the YFM45FXV supplement identifies a liquid-cooled 421 cm³ single-cylinder engine with a V-belt automatic transmission. Model-code-specific tables address the related carburetion, cooling, drivetrain, chassis, and electrical differences.

Troubleshooting is organized by symptoms such as starting failure, poor idle or high-speed performance, drivetrain noise, hard shifting, clutch slip or drag, overheating, weak braking, shock-absorber malfunction, unstable handling, and lighting faults. Electrical procedures use continuity, resistance, voltage, and spark testing to isolate faults before parts are replaced.

Diagrams, Tools, and Repair Cautions

Named visual references include the YFM350AS Wiring Diagram, YFM35XV 2006 Wiring Diagram, YFM450FAR Wiring Diagram, YFM45FXV 2006 Wiring Diagram, coolant-flow diagrams, and oil-flow diagrams. Cable-routing layouts and exploded assembly views support removal and disassembly work throughout the engine, drivetrain, and chassis chapters.

Specified tools include the crankshaft installer pot and bolt, 90890-01274 and 90890-01275; the crankcase separating tool, YU-01135-A / 90890-01135; and the pocket tester, YU-03112-C / 90890-03112. The crankshaft and crankcase sections pair these jobs with dedicated tools because improvised methods can damage shafts, bearings, or sealing surfaces. Differential and final-drive procedures also require measured gear lash and correct shim selection; guessed or mixed shimming can damage the gear contact surfaces.

Follow the manual’s precautions for supporting the ATV, handling fuel, servicing brakes, isolating the battery, and opening a hot cooling system. Internal-engine, brake, driveline, and electrical repairs should not be attempted beyond the mechanic’s training or available equipment.