1999 Yamaha YFM400FWAM / YFM400FWAMC ATV Service Manual

This Service Manual covers the Yamaha YFM400FWAM and YFM400FWAMC models from 1999. It provides essential repair, maintenance, and troubleshooting information with detailed diagrams and part numbers. Get yours today!

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Document Details

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Document Number / Seller:
26184 / Robert Robinson
File Size:
12.93 MB
File Type:
PDF
Language:
English
Pages:
374
Printable:
Yes
Category:
ATV
Last updated / verified
Oct 4, 2025

Models Covered & Key Technical Specifications

Yamaha YFM400FWAM / YFM400FWAMC (LIT-11616-13-21) -- 1999 Service Manual | ATV Packet.

  • Authorized Linear Velocity: 84.5 mm/s establishes the maximum piston speed, ensuring optimal engine performance.
  • Specific Form Factor: For critical component alignment, 10 Nm (7.2 ft-lb) defines the tightening torque for the oil filter.
  • Operational Storage Capacity: The electrical system requires 12 V to ensure consistent power delivery.
  • Fundamental Electrical Specs: A 30 A main fuse protects the electrical circuit from overloads, safeguarding components.
  • Specific Operational Speed: The engine idles at 1,450 ~ 1,550 r/min, contributing to smooth operation and fuel efficiency.
  • Core Linear Velocity: The maximum tire pressure for the rear is 22 kPa (3.2 psi), critical for safe handling.

Manual Description & Preview

Integrated Factory Safety Manual: Yamaha YFM400FWAM / YFM400FWAMC Service Manual: 1999 Standards-Vault

Subsystem-Focus: 1999 Yamaha YFM400FWAM / YFM400FWAMC // Technical-Domain: ATV / Engine Logic // Subsystem-Focus: Service-Data.

TOP

Assessment-Parameter Technical-Path Calibration-Data
General Specifications Engine & Chassis Standard Metrics
Maintenance Intervals Periodic Checks Initial & Every
Component Diagrams Exploded Views Part Identification
Troubleshooting Guide Fault Diagnosis System Isolation
Electrical System Circuitry & Components Testing Procedures

OEM specifications cover a wide array of systems and procedures, ensuring your ATV remains in peak condition. Rigorously requiring proper maintenance, this manual guides you through each step with clear instructions and diagrams. Each system is carefully documented, from the engine and drivetrain to the chassis and electrical components.

Wear limits are specified for engine components to ensure proper function and longevity.

System operation descriptions cover the cooling, lubrication, and fuel systems for optimal performance.

The documentation addresses the electrical system, including ignition, starting, and charging circuits.

Assembly instructions are detailed for major components like the engine, transmission, and suspension systems.

Hydraulic schematics are included for the brake system, detailing fluid levels and bleeding procedures.

This manual documents torque specifications for critical fasteners to ensure proper gasket seal integrity.

FAQ

Are publication details like the edition, date, and document reference numbers included in this manual? keyboard_arrow_down

Manual displays publication information on the cover and title pages, including the official document identification code and the original April 1999 printing date. These identifiers help verify the edition and scope of the document.

Does the document coverage preview include the YFM400FWAM and YFM400FWAMC model variants? keyboard_arrow_down

Manual title and identifying pages confirm that the content covers both the YFM400FWAM and YFM400FWAMC model variants for the 1999 model year.

Can the chapters in this manual be used to locate technical information for the engine, transmission, and cooling systems? keyboard_arrow_down

Table of contents lists dedicated sections for engine components, cooling system maintenance, and drive train assemblies. These chapters include exploded diagrams and specification tables for the respective systems.

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