2004-2012 Honda TRX450R / TRX450ER Service Manual

2004–2012 Honda TRX450R/ER Service Documentation

• Covers the 2004–2012 Honda TRX450R and TRX450ER sport all-terrain vehicles, addressing technical maintenance, engine, chassis, and electrical system specifications across the model production cycle
• Official Honda factory publication revised June 2006, 2004-2007 TRX450R/ER
• Contains 524 pages of technical reference including lubrication, cooling, transmission, steering, and suspension system details
• File delivered as a direct download the moment payment clears
• Indexed PDF search covers every chapter and appendix
• Detailed diagrams for cable and harness routing, including variants for the 2004–2005 and post-2005 configurations
• Documents specialized technical features like the Unicam valve train design and the twin-sump lubrication system
• This 2004-2012 Honda TRX450R/ER official factory manual provides complete system data for the full model range, including distinct service procedures for pre-2006 and post-2006 mechanical and electrical component updates.

System Coverage and Maintenance Data

This 524-page factory publication provides organized technical reference for all major systems. The documentation begins with a detailed general information section that establishes service rules, model identification, and standard torque specifications for the entire machine. Subsequent chapters divide the vehicle into logical work areas, including lubrication, fuel, cooling, and the engine removal/installation procedure. The text provides deep insight into engine top-end components, including the cylinder head, valves, and camshaft, alongside chassis systems like the front and rear suspension, steering linkage, and hydraulic brakes.

Technical details are segmented to distinguish between the initial 2004–2005 build and subsequent post-2005 model years. The manual includes dedicated sections for the TRX450ER electric starter and battery systems, as well as specific wiring diagrams for both production eras. Spec tables throughout the publication provide critical limits, including piston-to-cylinder clearance, valve timing, oil capacities, and tightening torques, ensuring precise identification for every system. Refer to what an OEM service publication covers for additional insight into factory documentation standards.

Specification Previews

The 2004–2012 Honda TRX450R cooling system coolant capacity is documented at 1.5 liters (1.6 US qt). The engine oil capacity (After 2005) is specified at 0.69 liter (0.73 US qt) following an oil and filter change. Intake valve clearance for the 2004–2012 Honda TRX450R/ER is specified at 0.16 ± 0.03 mm (0.006 ± 0.001 in) in the service data section. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work.

Document Reference: Revised: June 2006, 2004-2007 TRX450R/ER