2007-2008 Yamaha Grizzly 400, YFM4FG ATV Service Manual

Complete service manual for 2007-2008 Yamaha Grizzly 400, YFM4FG. Covers engine, chassis, and electrical systems. Publication C4085-91017.

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Document Details

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Document Number / Seller:
28376 / Margaret Jones
File Size:
17.01 MB
File Type:
PDF
Language:
English
Pages:
457
Printable:
Yes
Category:
ATV
Last updated / verified
Aug 18, 2025

Models Covered & Key Technical Specifications

2007-2008 Yamaha Grizzly 400, YFM4FG (ATV) – Maintenance & Repair Manual, covers 2007-2008 Service-Catalog

Documents service procedures, specifications, and diagrams for the Yamaha Grizzly 400 ATV.

  • Fundamental Engine Specs: 401 cm³ displacement establishes the core engine configuration.
  • Universal Chassis Specs: Coil spring/oil damper suspension systems are detailed for optimal ride comfort.
  • Reference Electrical Specs: 12 V halogen bulb lighting system provides illumination for night operation.
  • Approved Cooling Specs: Liquid-cooled, SOHC engine type ensures efficient thermal management.
  • Measured Transmission Specs: V-belt automatic transmission type offers seamless gear changes.
  • Published Tire Specs: AT25x8-12 front and AT25x10-12 rear tire sizes ensure excellent grip.

Professional Workshop Service Manual & Technical Specifications

Detailed Engineering Electrical Manual: ATV Official Yamaha Grizzly 400, YFM4FG – Maintenance & Repair Manual, covers 2007-2008 Service-Catalog

Assembly-Group: 2007-2008 Yamaha Grizzly 400, YFM4FG ATV // Calibration-Scope: Engine, Chassis, Electrical / Drivetrain Logic // Repair-Classification: Maintenance, Service, Diagnostics

TABLE OF CONTENTS

  1. GENERAL INFORMATION
  2. SPECIFICATIONS
  3. PERIODIC CHECKS AND ADJUSTMENTS
  4. ENGINE
  5. COOLING SYSTEM

Engine Rebuild Procedures

This manual details engine rebuild procedures for the Yamaha Grizzly 400, covering everything from basic maintenance to complex repairs. Methodical attention is given to component specifications and tolerances.

Drivetrain Specifications

Specifications for the drivetrain, including the V-belt automatic transmission and final gear assembly, are thoroughly documented to ensure optimal performance and longevity.

Maintenance and Adjustments

Regular maintenance and adjustment procedures are clearly outlined, facilitating a consistent service interval reliability for the vehicle.

Electrical System Diagnostics

Diagnostic procedures for the electrical system are included, covering the ignition, starting, charging, lighting, and signal systems. Technical specifications are provided for each component to ensure proper function.

This manual documents torque specifications for various components to ensure proper service interval reliability.

FAQ

What are the **proper** clearance measurements for the Yamaha Grizzly 400? keyboard_arrow_down

0.040 ~ 0.065 mm for piston-to-cylinder clearance is the standard specification.

Specify the **standard** torque specifications for the engine mounting bolts. keyboard_arrow_down

42 Nm (4.2 m•kg, 30 ft•lb) is the standard torque for the front upper engine mounting bolt/nut.

What is the **necessary** safety precautions when handling battery electrolyte? keyboard_arrow_down

Avoid bodily contact with electrolyte as it can cause severe burns or permanent eye injury; wear protective eye gear.

Calculate the **recommended** lubrication requirements for the rocker arm shaft hole. keyboard_arrow_down

0.009 ~ 0.037 mm is the standard clearance for the rocker arm to shaft.

What values **calibrated** testing parameters are needed for the starter motor output? keyboard_arrow_down

0.8 kW is the standard output for the starter motor.

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Reviews (2)

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This manual is a game changer! The step-by-step instructions are clear and easy to follow. I was able to fix my ATV without any prior experience. Highly recommend!
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Downloading the manual was a breeze, and the support team was quick to respond to my questions. The diagrams are particularly helpful for visual learners. Definitely worth it!