1987-1999 Yamaha Big Bear 350 4×4 YFM350FW Service Manual

Description

1987-1999 Yamaha Big Bear 350 4×4 YFM350FW Service Manual

This is the complete service manual package for the Yamaha Big Bear 350 4×4, covering the YFM350FW series from 1987 through 1999. The document combines the base service manual with all supplementary manuals released for subsequent model years, giving you full coverage of the Big Bear 350 4×4 in one PDF. Whether you are performing routine maintenance on a YFM350FWJ, rebuilding the top end of a YFM350FWB, or diagnosing an electrical fault on a YFM350FWT, the procedures and specifications are all here.

The Yamaha Big Bear 350 4×4 YFM350FW Service Manual is written for dealers and qualified mechanics, but it is equally useful for the experienced home wrencher who wants factory-level information. Every procedure is laid out step by step, with exploded diagrams, torque values, wear limits, and measurement specifications that let you work accurately instead of guessing.

File Details

• Manual type: Service and repair manual (base manual plus supplementary service manuals)
• Brand: Yamaha
• Model series: Big Bear 350 4×4 / YFM350FW
• Coverage years: 1987-1999
• Language: English
• Page count: 468 pages
• File format: PDF
• Document codes: LIT-11616-FM-37, LIT-11616-12-10

Chapters Covered

The manual is organized into chapters, with supplementary manuals adding coverage for later model years. The main sections are:

• General Information — machine identification, vehicle identification number, engine serial number, model label, important information, special tools
• Specifications — general specifications, maintenance specifications, engine, chassis, electrical, tightening torques, cable routing
• Periodic Inspections and Adjustments — valve clearance, idle speed, throttle lever, speed limiter, fuel line, air filter, engine oil, transfer gear oil, exhaust system, compression, brakes, clutch, select lever control cables, steering, shock absorbers, tires, wheels, final gear oil, differential gear oil, battery, spark plug, headlight, fuses, circuit breaker
• Engine — engine removal, recoil starter, cylinder head and cylinder, piston, crankcase covers, CDI rotor, cam chain, oil pipe, clutch, balancer drive and driven gears, oil pump, shifter, crankcase, transmission, crankshaft, inspection and repair, engine assembly and adjustment
• Carburetion — carburetor removal, disassembly, inspection, assembly, installation, adjustment, wire cylinder
• Drive Train — differential gear and constant velocity joints, transfer gear, middle drive and driven gears, rear axle, rear final gear, rear drive shaft, troubleshooting
• Chassis — front and rear wheels, front brake, rear brake, steering system, steering knuckles and tie-rod ends, front shock absorber and front arms, rear shock absorber and swingarm
• Electrical — electrical components, starting system, charging system, ignition system, lighting system, signal system, switches test, accessory system
• Appendices — general specifications, maintenance specifications, general torque specifications, definition of units, lubrication diagrams, cable routing, wiring diagrams

Additionally, the supplementary manuals cover model-specific updates for the YFM350FWH, YFM350FWF, YFM350FWB, YFM350FWA, YFM350FWW, and YFM350FWBL(C), including revised specifications, new procedures, and model-specific service information.

This Big Bear 350 service manual goes far beyond a basic tune-up guide. It includes complete engine disassembly and reassembly procedures with detailed measurement steps, transmission and shifter service, differential and transfer gear overhaul, brake system repair, steering and suspension work, and full electrical troubleshooting. The appendices provide lubrication diagrams and cable routing maps that are essential when reassembling components or tracing wiring faults.

What This Manual Enables You to Do

With this Yamaha Big Bear 350 4×4 repair manual on hand, you can tackle jobs that would otherwise require a dealer or a professional shop. The manual gives you the exact torque values, clearances, and wear limits needed for safe and reliable repairs. It covers:

• Engine top-end and bottom-end rebuilds, including valve clearance adjustment, cam chain service, piston and ring replacement, and crankshaft inspection
• Clutch and primary/secondary clutch service
• Carburetor cleaning, adjustment, and fuel level measurement
• Differential gear, transfer gear, and rear final gear disassembly, inspection, and shimming
• Rear axle and drive shaft removal and bearing replacement
• Front and rear brake service, including drum brake shoe replacement, disc brake pad replacement, caliper and master cylinder overhaul, and air bleeding
• Steering system inspection, tie-rod adjustment, and toe-in setting
• Front and rear shock absorber service and spring preload adjustment
• Electrical troubleshooting for starting, charging, ignition, lighting, signal, and accessory circuits
• Wiring diagram interpretation for all covered model years

Every procedure in this YFM350FW service manual is written with the assumption that you have basic mechanical knowledge, but the level of detail is such that even complex tasks like transmission reassembly or differential gear lash adjustment are broken down into manageable steps. The exploded diagrams show how parts fit together, and the specifications tables give you the numbers you need to verify your work.

Why This Manual Matters

The Yamaha Big Bear 350 4×4 is a robust and long-lived ATV, but like any machine, it requires regular maintenance and occasional repair. Without the correct procedures and specifications, it is easy to overtighten a bolt, set a clearance incorrectly, or miss a critical step during reassembly. This Big Bear 350 workshop manual removes the guesswork. It tells you the correct tightening sequence for crankcase bolts, the proper way to measure and adjust gear lash, the resistance values for ignition and charging coils, and the exact torque for axle nuts and suspension components.

For owners who like to do their own maintenance, this manual pays for itself many times over. For mechanics who work on a variety of machines, it provides the model-specific detail that generic repair guides lack. The inclusion of supplementary manuals means you are not left hunting for separate documents when working on a later model year — the information is all in one place.

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Instant PDF Delivery

This Yamaha Big Bear 350 4×4 YFM350FW service manual is delivered as a PDF download immediately after payment. There is no shipping, no waiting for a physical book to arrive, and no risk of a damaged or lost package. You can view the manual on any device — computer, tablet, or smartphone — and print the pages you need for the workshop. The PDF format makes it easy to search for specific terms, so you can jump straight to the section you need instead of flipping through hundreds of pages.

Whether you are servicing your own Big Bear 350, preparing a machine for sale, or running a repair shop, this manual gives you the information you need to do the job right. It is a complete reference for the 1987-1999 Yamaha Big Bear 350 4×4, and it will remain useful for as long as you own or work on these machines.