1997-1999 Yamaha YFM350FWBJ ATV Service Manual

Shop manual for Yamaha YFM350FWBJ ATV with detailed engine, transmission, and chassis repair procedures. Includes diagrams and specifications. Part number 4WU1/4WU2.

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Document Details

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Document Number / Seller:
28768 / Stephanie Rogers
File Size:
48.85 MB
File Type:
PDF
Language:
English
Pages:
351
Printable:
Yes
Category:
ATV
Last updated / verified
Jan 7, 2026

Models Covered & Key Technical Specifications

Yamaha YFM350FWBJ (1997-1999) (4WU1 / 4WU2) - Detailed Workshop Manual

| Series: 4WU1 / 4WU2 | Engine Container.

  • Design Burn-in Temperature: 1200 dpi establishes the maximum print output Architecture.
  • Advanced Operational Speed: For optimal operation, 15-30C defines the environmental limit Framework.
  • Technical Standard: 450 W -- signifies the active printing consumption Threshold.
  • Standard Memory Capacity: The formatter board requires 64 MB for standard operation Logic.
  • Prescribed Spacing Data: Maximum throughput reaches 25 ppm Parameters.
  • Engineered Heat Dissipation: The component requires 64 MB for standard operation Logic.

Professional Workshop Service Manual & Technical Specifications

Enhanced Operations Manual: ATV Detailed Workshop Manual for Yamaha YFM350FWBJ ATV (1997-1999) – 318 Pages | Shop Standards Documentation-Framework

Coverage-Scope: 1997-1999 Yamaha YFM350FWBJ ATV models // Service-Level: English // Calibration-Scope: 318 pages, 48.85 MB.

Technical Specs Table (3-Column)

Assessment-Element Technical-Path Calibration-Data
Model Code 4WU1 / 4WU2 Engine Specs
Displacement 348 cm³ 8.6:1
Transmission 5-Speed Shaft Drive
Fuel Capacity 10 L Electric Start

Technical chapters are organized around

Introduction

This manual provides comprehensive guidelines for the maintenance and repair of the Yamaha YFM350FWBJ ATV. It covers all aspects of the vehicle, from basic inspection to complete engine overhaul.

Engine Overhaul Procedures

Detailed steps and diagrams are provided for engine disassembly and reassembly, including cylinder head, crankshaft, and piston service. Safely mandating proper component reinstallation is emphasized throughout.

Drivetrain and Chassis Systems

This section documents procedures for the drive train, including differential gear and constant velocity joints, as well as chassis components such as suspension, brakes, and steering system maintenance. Structured maintenance of these systems ensures optimal performance.

Electrical System and Troubleshooting

Information on the electrical system, including ignition, charging, and lighting, is presented. A comprehensive troubleshooting guide helps identify and resolve common issues.

This manual documents torque specifications for engine and chassis components to ensure proper thread engagement security.

FAQ

What is the **required** fluid capacity requirements? keyboard_arrow_down

3.5 L (3.1 US qt) is the total engine oil capacity, with 2.9 L (2.6 US qt) for periodic changes and 2.9 L (2.6 US qt) with filter replacement.

Calculate the **specified** component identification. keyboard_arrow_down

4WU1 and 4WU2 are the model codes for the Yamaha YFM350FWBJ, indicating USA and Canada variants respectively.

What values **essential** adjustment procedures? keyboard_arrow_down

1,450–1,550 r/min is the specified engine idling speed range that should be adjusted as per the procedures outlined on page 3-10.

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Reviews (4)

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Rated 4 out of 5 stars
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This repair manual was a lifesaver for my Yamaha Big Bear. The download process was seamless, and I received the link almost instantly. Highly recommend!
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The clarity of instructions in this manual is impressive. The download was smooth and hassle-free, and I got great support via email when needed. A fantastic resource!
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The manual is incredibly detailed, covering everything I needed. I appreciated the prompt email support when I had questions. Definitely worth the investment!