2009-2012 Honda TRX420FA/FPA Rancher 4-Wheel ATV Repair Manual

This manual covers the 2009-2012 Honda TRX420FA/FPA Rancher ATVs, offering comprehensive repair and maintenance procedures. Part No. 61CX400 Rev. 1.

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Document Details

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Document Number / Seller:
26071 / Christopher Diaz
File Size:
72.31 MB
File Type:
PDF
Language:
English
Pages:
605
Printable:
Yes
Category:
ATV
Last updated / verified
Jul 7, 2025

Models Covered & Key Technical Specifications

2009-2012 Honda TRX420FA/FPA Rancher 4-Wheel ATV Repair Manual

Service Manual | Honda ATV Factory Service Archive

  • Calibrated Amperage Specs: 12V battery systems are designed for reliable power output for all electronic components.
  • Rated Thermal Envelope: For optimal operation, 80-84°C (176-183°F) defines the thermostat's activation range.
  • Critical Production Rate: 2.7 N-m signifies the torque specification for the cooling fan nut.
  • Universal Imaging Specs: The cooling fan motor bolt requires 5.2 N-m for secure mounting.
  • Maximum Fluid Capacity: Radiator and engine combined capacity is 1.5 liters.
  • Documented Output Rating: The motor stay bolt is specified as 8.4 N-m to ensure proper assembly.

Professional Workshop Service Manual & Technical Specifications

Unified Technical Installation Manual: Honda TRX420FA/TRX420FPA Rancher (2009-2012) Reference-Archive

Performance-Values: 605 pages // Reference-Category: ATV / Power-Train Logic // Engine-Type: 4-Stroke, Liquid-Cooled The documentation provides guidance on the removal, installation, inspection, and maintenance of various systems within the Honda TRX420FA/FPA Rancher. This comprehensive resource covers critical aspects of the vehicle's operation, ensuring proper upkeep and performance.

Metric Value Calibration-Standards
Engine Oil Capacity 3.4 liters (3.6 US qt) Maintenance Schedule
Cooling System Capacity 1.5 liters (1.6 US qt) Coolant Replacement
Spark Plug Gap 1.0 - 1.1 mm Maintenance
Tire Tread Depth 4.0 mm Wheel/Tire Specifications
Fuel Tank Capacity 13.3 liters General Specifications
Coolant Relief Pressure 108 - 137 kPa System Pressure Testing

Regular maintenance procedures are specified for the engine oil, cooling system, and drive train boots. These procedures are essential for maintaining the vehicle's consistent performance framework and longevity. The manual details the service procedures for the fuel system, including the throttle body, fuel injector, and IACV. Additionally, it covers engine removal and installation, along with the lubrication system, ensuring a complete understanding of the vehicle's mechanical components. This manual documents torque specifications for essential fasteners to ensure proper flange face sealing.

FAQ

What are the **proper** clearance measurements for the TRX420FA/FPA? keyboard_arrow_down

1.0 - 1.1 mm is the recommended spark plug gap for proper ignition.

Specify the **standard** torque specifications for engine components. keyboard_arrow_down

22 N·m is the standard torque for the spark plug, crucial for correct seating.

What are the **necessary** safety precautions when working with the cooling system? keyboard_arrow_down

Always wait for the engine and radiator to cool down before removing the radiator cap to prevent serious scalding.

Calculate the **recommended** lubrication requirements for the drive train boots. keyboard_arrow_down

The drive shaft and propeller shaft boots should be checked for damage or leaks, and replaced if compromised to prevent grease loss.

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This repair manual is incredibly detailed and easy to follow. Downloading was a breeze, and I received the link almost instantly! Highly recommend for anyone working on their Honda Rancher.