2006-2009 Honda TRX680FA, TRX680FGA Service Manual

• Covers the 2006–2009 Honda TRX680FA and TRX680FGA ATV models equipped with the 674.9cc longitudinal engine and automatic torque-converter transmission
• Official Honda Motor Co., Ltd. publication (P/N 61KRN10, dated November 2005)
• Provides over 100 pages of factory-level technical data, including wiring diagrams, torque specification tables, and exploded-view diagrams
• Essential reference material detailing system breakdowns for routine maintenance and comprehensive repair planning
• Serves as the primary documentation for the 2006 model year release and subsequent production runs through 2009, maintaining consistent hardware specifications

Detailed Technical Overview

This factory publication delivers the exact documentation necessary for assessing and maintaining the TRX680 platform. Identifying your machine is straightforward with standardized procedures for locating the VIN and engine serial numbers. Inside, you will find precise teardown breakdowns for body panels, exhaust components, and complex drivetrain assemblies. Working on modern ATVs requires strict attention to detail. Always ensure your workspace is properly ventilated and standard shop safety protocols are followed before initiating any diagnostic work on fuel-injected systems. The manual thoroughly outlines the PGM-FI electronic control system, offering diagnostic functions and exact sensor specifications for the throttle body and idle air control valve. If you are mapping out a transmission repair, the guide offers an extensive look into the hydraulic circuits of the three-speed automatic transmission and torque converter.

Specification Highlights

Accurate fluid and torque values are critical for a reliable build. The engine oil capacity for the 674.9cc powerplant is strictly documented at 2.7 liters after a standard drain. When assembling the top end, the cylinder head bolt torque is specified at 55 N-m. Lower end figures include the front differential ring gear bolt torque at 49 N-m. The factory cooling system capacity sits at 2.0 liters. For valvetrain adjustments, the precise intake valve clearance is listed at 0.15 mm.