2004-2009 Yamaha YFZ450S / YFZ450T / YFZ450V / YFZ450W / YFZ450SEW / YFZ450 Service Manual & Owner's Manual

This Yamaha YFZ450S/T/V/W/SEW/YFZ450 Service and Owner's Manual covers engine, chassis, electrical, and maintenance. Includes LIT-11626-18-11

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Document Details

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Document Number / Seller:
24206 / Peter King
File Size:
25.33 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
ATV
Last updated / verified
Jan 2, 2026

Models Covered & Key Technical Specifications

Technical Factory Reference Manual: Yamaha YFZ450S / YFZ450T / YFZ450V / YFZ450W / YFZ450SEW / YFZ450 Service Manual & Owner's Manual, ATV, years: 2004-2009 Technical-Guide Service Manual | Owner's Manual Archive

  • Prescribed Dimensional Limits: For component fitment, 230.0 mm rear wheel travel establishes the operational range Standards.
  • Documented Package Size: For storage capacity, 1.9 L signifies the reserve fuel volume Parameters.
  • Core Fastening Values: Engine mounting bolts require 4.6 kgm for secure attachment Norms.
  • Rated Charge Quantity: Battery voltage capacity is rated at 12 V, 6.5 Ah Topology.
  • Technical Voltage Specs: Headlight bulbs are rated at 12 V, 30 W each Architecture.
  • Advanced Weight Data: Basic vehicle weight with oil and full fuel tank is 169 kg Matrix.

Professional Workshop Service Manual & Technical Specifications

Technical Factory Reference Manual: Yamaha YFZ450S / YFZ450T / YFZ450V / YFZ450W / YFZ450SEW / YFZ450 Service Manual & Owner's Manual, ATV, years: 2004-2009 Technical-Guide

Service-Level: Yamaha YFZ450S / YFZ450T / YFZ450V / YFZ450W / YFZ450SEW / YFZ450 // Service-Level: ATV / Recreational Logic // Service-Level: comprehensive technical-details.

Assessment-Parameter Value Calibration-Standards
Overall Length 1,840 mm 72.4 inches
Overall Width 1,170 mm 46.1 inches
Overall Height 1,090 mm 42.9 inches
Seat Height 800 mm 31.5 inches
Wheel Base 1,280 mm 50.4 inches
Ground Clearance 255 mm 10.04 inches

Cataloging major assemblies into engine, cooling system, carburetor, chassis, electrical, and troubleshooting sections.

Service intervals are documented for engine oil checks, coolant reservoir levels, and spark plug inspections.

Component locations are identified for the starter motor, ignition system, and lighting systems.

Service procedures are documented for drive chain slack adjustments, brake fluid replacement, and headlight beam adjustments.

Calibration requirements are specified for idle speed, throttle lever free play, and clutch lever free play.

Electrical system documentation covers fuse replacement and tail/brake light bulb replacement.

This manual documents torque specifications for wheel nuts to ensure proper thread engagement security.

FAQ

What procedures are necessary for checking the engine oil level? keyboard_arrow_down

1.75 L of engine oil is the total amount for models without oil filter element replacement, ensuring proper engine lubrication.

Determine the recommended calibration settings for tire pressure. keyboard_arrow_down

30 kPa (0.30 kgf/cm², 4.4 psi) for the front and 35 kPa (0.35 kgf/cm², 5.0 psi) for the rear are the recommended tire pressures.

What specifications are calibrated for clearance measurements? keyboard_arrow_down

0.7–0.8 mm (0.028–0.031 in) is the calibrated spark plug gap specification for optimal engine performance.

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Reviews (5)

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Had a minor issue with my download link, but the support team responded quickly and resolved it like pros!
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Rated 4 out of 5 stars
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This manual is a must-have for any YFZ450 owner. The detailed sections on maintenance and troubleshooting helped me immensely! Quick email response when I had questions too!
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The information in this manual is thorough and very helpful for both new and experienced owners. Highly recommend!
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I was impressed with how easy the download was! Received the link almost instantly after purchase. Perfect for keeping my YFZ450 in top shape!