2005-2008 Honda TRX500 FA/FGA Service Manual

This manual provides comprehensive service and repair procedures for the Honda TRX500 FA/FGA, covering essential systems and components. Part No. 61HN252.

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Document Details

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Document Number / Seller:
31764 / Linda Lopez
File Size:
16.86 MB
File Type:
PDF
Language:
English
Printable:
Yes
Category:
ATV
Last updated / verified
Jul 26, 2025

Models Covered & Key Technical Specifications

OEM-Grade Engineering Diagnostic Manual: Honda TRX500 FA / FGA (2005-2008) Transmission-Guide

Service & Repair Guide | ATV Transmission-Kit

  • Prescribed Twist Specifications: 36 N·m Torque value ensures proper assembly of the Front Carrier Bolts. (S1)
  • Documented Capacity Limits: 22 N·m torque on Cylinder Head Cover Cap Nuts ensures secure closure. (S2)
  • Core Measurement Bounds: 10 N·m is the specified torque for the Engine Oil Temperature Sensor to maintain correct readings. (S3)
  • Rated Environmental Range: For optimal performance, the spark plug gap is set to 0.8-0.9 mm. (S4)
  • Technical Rotation Data: Carburetor insulator band screw torque is 4 N·m to maintain the fuel system integrity. (S2)
  • Advanced Rotation Data: The exhaust pipe band bolt requires 23 N·m for secure exhaust system function. (S1)

Professional Workshop Service Manual & Technical Specifications

OEM-Grade Engineering Diagnostic Manual: Honda TRX500 FA / FGA - Comprehensive Service & Repair Guide (2005-2008) Transmission-Guide

Coverage-Scope: 2005-2008 Honda TRX500 FA/FGA | Design-Core: ATV / Transmission Logic | Coverage-Scope: English

Specification Diagnostic-Logic Validation-Data
Engine Oil Capacity 4.4-5.2 Liters Verified
Spark Plug Gap 0.8-0.9 mm Standardized
Idle Speed 1400 ± 100 rpm Calibrated
Front Tire Tread Depth 4.0 mm Minimum Verified
Rear Tire Tread Depth 4.0 mm Minimum Verified
Cold Tire Pressure 25 kPa Standard Verified

The repository is divided into sections covering engine, transmission, electrical, and chassis systems. Each chapter offers detailed explanations of procedures, specifications, and troubleshooting.

Engine

Diagnostic procedures are covered for cylinder head, valve, and camshaft service, including detailed measurements and inspection points.

Transmission

Wiring diagrams are provided for all electrical components, ensuring accurate system diagnosis and repair.

Chassis

Fuel system procedures are documented for carburetor removal, disassembly, and adjustment, crucial for optimal engine performance.

Maintenance

Adjustment procedures are detailed for various systems including brakes, suspension, and steering, ensuring vehicle safety and control.

Cooling System

Timing procedures are documented for key engine components to ensure precise operation.

Properly requiring careful attention to detail, this manual documents torque specifications for critical components to ensure proper cyclic stress resistance and overall vehicle reliability.

FAQ

What **essential** testing parameters are outlined for engine compression? keyboard_arrow_down

608-902 kPa (6.2-9.2 kgf/cm², 88-131 psi) at 450 rpm (min-1) are the specified engine compression parameters for testing.

Check the **correct** diagnostic procedures for the valve clearance. keyboard_arrow_down

0.15 mm (0.006 in) for intake and 0.23 mm (0.009 in) for exhaust are the correct valve clearance specifications when the engine is cold.

What does the **documented** fluid capacity requirements state for the engine oil? keyboard_arrow_down

4.4 liters (4.7 US qt, 3.9 Imp qt) after draining and 5.2 liters (5.5 US qt, 4.6 Imp qt) after disassembly are the documented engine oil capacity requirements.

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This service manual has been a lifesaver for my Honda TRX500. The troubleshooting tips and detailed instructions are top-notch. Plus, the download process was super smooth, and I received the download link in my email almost instantly. Highly recommend!