2008 Yamaha YZ450F / YZ450FX Owner's Service Manual

Complete service procedures, troubleshooting guide, and maintenance specifications for Yamaha competition motocross models. Covers engine tuning, suspension setup, carburetor adjustment, and detailed part numbers for 4-stroke dirt bikes.

4.5starstarstarstarstar_half(2)
visibility Preview Available
Yamaha 2008 Yamaha YZ450F / YZ450FX Owner's Service Manual manual page preview - page 1 of 574

Sample pages from the 2008 Yamaha YZ450F / YZ450FX Owner's Service Manual manual

Yamaha 2008 Yamaha YZ450F / YZ450FX Owner's Service Manual manual preview page 1 - thumbnail
info_outline Click thumbnails to preview different pages
$19.00 (incl. VAT) Original OEM Factory Manuals & Data Instant Download / No Shipping Fees
OR BUY NOW
verified_user
Lifetime Access
Re-download anytime
flash_on
Instant Download
Get it immediately
lock
Secure Payment
PayPal
Technical Safety Notice
keyboard_arrow_down

This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Yamaha Models Covered & Key Technical Specifications

Models: Yamaha YZ450F, Yamaha YZ450FX
Sub-models / Variants: USA, Canada, Australia, New Zealand, Europe, South Africa
Build Years: 2008
Serial Numbers: 2S2B, 2S2C, 2S2E
Technical Data:

  • Engine: Liquid-cooled 4-stroke, DOHC, single cylinder
  • Displacement: 449 cm³ (15.8 Imp oz)
  • Bore × Stroke: 95.0 × 63.4 mm
  • Compression Ratio: 12.3:1
  • Transmission: Constant mesh, 5-speed
  • Fuel Capacity: 7.0 L (1.85 US gal)
  • Engine Oil Capacity (Total): 1.2 L (1.27 US qt)
  • Coolant Capacity: 0.99 L (1.05 US qt)
  • Carburetor: KEIHIN FCR-MX39
  • Spark Plug: NGK CR8E
Technical Specifications
keyboard_arrow_down
Document Number / Seller:
24388 / Carol Thomas
File Size:
22.63 MB
File Type:
PDF
Language:
English, French and German
Pages:
574
Printable:
Yes
Category:
Motorbike
Last updated / verified
Dec 24, 2025

Yamaha Manual Features & Content Preview

2008 Yamaha YZ450F & YZ450FX Manual Content Preview

  • Covers 2008 Yamaha YZ450F and YZ450FX competition motocross models, including USA, CDN, AUS, NZ, and European regional variants
  • Original OEM publication, first edition May 2007, part number 2S2-28199-82
  • Contains 574 pages of technical diagrams, exploded views, torque specification tables, and routing schematics
  • Delivered as a direct download the moment payment clears
  • File link appears in your order confirmation straight away
  • Page spreads stay legible when printed at original size
  • Indexed PDF search covers every chapter and appendix
  • This 1st edition is the reference used for the 2008 YZ450 series factory service build

Technical Scope and Data

The 2008 Yamaha YZ450F and YZ450FX manual provides exhaustive technical documentation for high-performance motocross engine maintenance. Chapters detail general specifications, regular inspection, engine service, chassis maintenance, electrical system diagnostics, and professional tuning parameters.

Specification Highlights

The manual documents engine parameters, including the 12.3:1 compression ratio and 449 cm³ displacement specs. Cylinder head bolt torque values are documented in a multi-stage sequence, with final-stage angles of 180° specified in the assembly data. Spark plug gap is listed at 0.7–0.8 mm in the maintenance table. The cooling system capacity is documented at 0.99 liters for the complete circuit. Piston-to-cylinder clearance is specified at 0.020–0.045 mm in the internal tolerance charts. All service data is intended for reference; qualified technicians and original OEM documentation remain the authoritative source for hands-on work. This official 574-page Yamaha service manual provides full documentation for the 2008 YZ450F and YZ450FX models, covering engine, chassis, and electrical specifications for the 2S2-series competition motorcycles.

Manual FAQ, Purchase & Download Details

What model years and submodels are listed in this 2008 Yamaha YZ450F/YZ450FX manual? keyboard_arrow_down

Document covers the 2008 model year for both the Yamaha YZ450F and the YZ450FX.

Is the manual provided as a downloadable PDF file? keyboard_arrow_down

Yes, the product is a digital document in PDF format with a file size of approximately 22.63 MB.

What information does the technical specification section contain regarding engine fluid capacities? keyboard_arrow_down

Specification tables list the engine oil capacity for both periodic changes and total system capacity, as well as the coolant capacity for the complete circuit.

Are wiring diagrams and electrical component references included in the document? keyboard_arrow_down

Manual includes a dedicated electrical chapter that contains component diagrams, ignition system specifications, and throttle position sensor system references.

What technical details are provided in the maintenance specifications for valve and piston components? keyboard_arrow_down

Maintenance specifications section contains tables for valve clearance ranges, valve spring free lengths, piston-to-cylinder clearance limits, and piston ring end gaps.

Customer Reviews

Read what our customers say about this Yamaha Motorbike manual and share your own experience.