1984 Yamaha IT490(L) / IT250(L) Owner's Service Manual

Technical reference for the 1984 Yamaha IT490(L) and IT250(L) motorcycles. Documents maintenance, troubleshooting, and specifications. PN 29V-28199-70.

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Document Details

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Document Number / Seller:
24571 / Richard Young
File Size:
13.58 MB
File Type:
ZIP
Language:
English, French
Printable:
Yes
Category:
Bike
Last updated / verified
Apr 27, 2025

Models Covered & Key Technical Specifications

Yamaha IT490(L) / IT250(L) (29V-28199-70) -- 1984 Operational Collection | Series Set.

  • Authorized Scan Resolution: 0.7-0.8 mm establishes the gap for the IT490 spark plug Baseline.
  • Critical Tightening Data: For proper assembly, 20 Nm signifies the torque for the spark plug Specification.
  • Operational Electrical Specs: The ignition timing is set to 2.0 mm before Top Dead Center Mapping.
  • Fundamental Thermal Rating: The engine's displacement of 487 cc defines the operational capacity Framework.
  • Specific Storage Capacity: The fuel tank capacity of 13.5 L ensures sufficient range Parameters.
  • Maximum Ventilation Data: 2.190 mm overall length provides ample space for operation Baseline.

Manual Description & Preview

In-Depth Training Wiring Manual: Yamaha IT490(L) / IT250(L) for hassle-free repairs OEM-Documentation

Reference-Category: Bike / Coverage-Scope: Engine, Chassis, Electrical / Reference-Category: Procedures.

Assessment-Element Operational-Logic Framework
General Information Covers basic features and controls. Included
Maintenance and Adjustments Details routine checks and adjustments. Included
Engine Maintenance and Repair Documents engine disassembly and reassembly. Included
Chassis Maintenance and Repair Outlines procedures for wheels, forks, and suspension. Included
Electrical Troubleshooting Provides guidance for diagnosing electrical issues. Included

Coverage is segmented into sections for General Information, Regular Maintenance and Adjustments, Engine Maintenance and Repair, Chassis Maintenance and Repair, Electrical Troubleshooting, and Appendices. This manual details procedures for disassembly, inspection, and assembly of various engine components, including the carburetor, cylinder head, and clutch. It also covers chassis-related maintenance for wheels, forks, and the rear shock absorber. Furthermore, it offers troubleshooting steps for electrical systems and provides comprehensive specifications for the IT490(L) and IT250(L) models. The document also documents torque specifications for critical fasteners to ensure proper assembly and function, preventing fastener fatigue prevention.

FAQ

Does the 1984 Yamaha IT490 and IT250 owner service manual include wiring diagrams for the electrical system? keyboard_arrow_down

Chapter 5 of the manual includes detailed wiring diagrams for both the IT490 and IT250 models, along with information on electrical parts location and system testing.

Can I preview whether specific submodels like the IT490 L or IT250 L are covered in this 1984 publication? keyboard_arrow_down

Manual covers the 1984 Yamaha IT490 L and IT250 L model variants as listed in the publication data.

Are tightening specifications and torque values included for the cylinder head and engine components? keyboard_arrow_down

Appendices and engine maintenance chapters contain specification tables that list torque values for various fasteners including cylinder head bolts and engine mounting hardware.

Will I receive this service manual as a downloadable PDF file after my payment is processed? keyboard_arrow_down

Product is provided as a digital PDF download, which is accessible after your transaction is complete.

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