2004-2009 Honda TRX450R Service Manual
Diagnostic procedures and component service for the Honda TRX450R. Covers paper handling and control panel diagnostics. PN 07757-0010000.
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Sample pages from the 2004-2009 Honda TRX450R Service Manual manual
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Honda Models Covered & Key Technical Specifications
Models: Honda TRX450R, Honda TRX450ER
Sub-models / Variants: 2WD, Kick-start (TRX450R), Electric-start (TRX450ER)
Build Years: 2004–2009
Technical Data:
- Engine: Liquid-cooled single-cylinder 4-stroke, OHC Unicam
- Displacement: 449.4 cc (2004–2005) or 449.7 cc (After 2005)
- Compression Ratio: 10.5:1 (2004–2005) or 12.0:1 (After 2005)
- Transmission: Constant mesh 5-speed with wet multi-plate clutch
- Valve clearance (Intake): 0.16 mm ± 0.03 mm
- Engine oil capacity (After disassembly): 1.20 liters
- Torque (upper engine hanger nut): 54 Nm
Honda Manual Features & Content Preview
Honda TRX450R and TRX450ER Service Documentation
- Covers 2004–2009 Honda TRX450R and TRX450ER sport ATVs, including both kick-start and electric-start variants
- Original OEM publication, Form No. 12345 (referencing specific 2004–2009 service revisions)
- Contains 522 pages of technical specifications, maintenance schedules, and mechanical layout illustrations
- Indexed PDF search covers every chapter and appendix
- Accessible from your device as soon as the order is placed
- File link appears in your order confirmation straight away
- This 522-page official Honda publication remains the primary reference for servicing the 2004–2009 TRX450 series Unicam-equipped engines.
What the Manual Documents:
The Honda TRX450R and TRX450ER what an OEM service publication covers includes detailed mechanical breakdowns for the twin-sump lubrication system and the Unicam SOHC valve train configuration. Each major assembly section organizes parts by chassis and engine systems, documenting removal, inspection, and assembly parameters for the 2004–2009 model years. Maintenance protocols outline regular service intervals for the drivetrain, suspension, and braking systems to keep the vehicle within factory operating standards.
Specification Highlights:
Technical reference tables provide precise clearance data, such as intake valve clearance at 0.16 mm ± 0.03 mm. The engine lubrication data confirms the crankcase oil capacity at 1.20 liters following total disassembly. Torque specifications for critical fasteners like the upper engine hanger nut are listed at 54 Nm to facilitate assembly. This 522-page Honda TRX450R and TRX450ER workshop manual serves as the definitive reference for the 2004–2009 generation, documenting engine, chassis, and electrical specifications for the TRX450 series build.
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