2006-2012 Yamaha YFM40FBW (Big Bear 400 4WD IRS) ATV Service Manual
Addresses Big Bear 400 4WD IRS systems including engine, carburetor, drive train, chassis, electrical, and troubleshooting. PN LIT-11616-20-45
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Sample pages from the 2006-2012 Yamaha YFM40FBW (Big Bear 400 4WD IRS) ATV Service Manual manual
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Models Covered & Key Technical Specifications
Yamaha Big Bear 400 4WD IRS (LIT-11616-20-45) 2006-2012 This manual provides comprehensive coverage for your Yamaha Big Bear 400 4WD IRS.
- System Diagnostic Data: 387.0 cm3 displacement outlines the engine's core capacity Architecture.
- Specific Component Specifications: For engine rebuilding, 8.60:1 compression ratio defines the standard limit Framework.
- Essential Lubrication Data: 2.90 L specifies the periodic oil change quantity Threshold.
- Advanced Electrical Parameters: The ignition system utilizes DC CDI for standard operation Logic.
- Core Chassis Measurements: 22-28 kPa tire pressure determines the environmental limit Parameters.
- Published Assembly Information: The rear brake uses a wet, multiple-disc brake system Configuration.
Manual Description & Preview
Yamaha Big Bear 400 4WD IRS (LIT-11616-20-45) 2006-2012 Comprehensive Service, Repair, and Maintenance Manual Parts-Reference
Component-Focus: Big Bear 400 4WD IRS • Model-Portfolio: YFM40FBW (2007), Yamaha Big Bear 400 4WD IRS (2007), 4S11 (2007), 4S14 (2007) • Operational-Framework: ATV
TABLE OF CONTENTS
| Identifier | System-Path | Context |
|---|---|---|
| GENERAL INFORMATION | 1-1 | General vehicle information, VIN, model labels, and features. |
| SPECIFICATIONS | 2-1 | Detailed general, engine, chassis, and electrical specifications. |
| PERIODIC CHECKS AND ADJUSTMENTS | 3-1 | Maintenance schedules, engine and chassis checks, and adjustments. |
| ENGINE | 4-1 | Engine removal, cylinder head, camshaft, and piston procedures. |
| CARBURETOR | 5-1 | Carburetor inspection, assembly, and fuel level adjustment. |
| DRIVE TRAIN | 6-1 | Front and rear constant velocity joints, differential gears, and final drive gears. |
| CHASSIS | 7-1 | Front/rear wheels, brakes, steering system, and shock absorber details. |
| ELECTRICAL | 8-1 | Ignition, starting, charging, lighting, and signaling systems. |
| TROUBLESHOOTING | 9-1 | Common issues and diagnostic procedures for starting, performance, brakes, and lighting. |
Precisely mandating comprehensive coverage, this manual delves into the intricate systems of your ATV. From engine overhauls to electrical diagnostics, it outlines all procedures. Careful attention is paid to detailing technical specifications and maintenance intervals. Removal procedures are documented for all major components, including the engine, carburetor, and drive train. Technical specifications are provided for critical areas like brake pad wear limits and tire pressure. Factory specifications are documented for suspension adjustments and steering system checks. Engine rebuild procedures are documented for valve clearance and piston ring measurements. Drivetrain specifications are addressed in procedures for differential and final gear backlash. This manual is an indispensable resource for maintaining your Yamaha Big Bear 400 4WD IRS.
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