Honda FourTrax Rancher AT 2004–2005 — TRX400FA/FGA ATV Owner's Manual (P/N 31HN7610)
286 Pages • 1 Printable PDF (English) • Download
Honda Models Covered & Key Technical Specifications
Models & Model Codes: FourTrax Rancher AT (TRX400FA), FourTrax Rancher AT with GPScape (TRX400FGA)
Sub-models / Variants: Selectable 2WD/4WD; Auto and ESP shift modes on both models
Model Years: 2004–2005
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Engine oil capacity: 3.0 US qt (2.8 L) after draining
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Spark plug gap: 0.03–0.04 in (0.8–0.9 mm)
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Engine idle speed: 1,400 ± 100 rpm
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Fuel tank capacity: 3.83 US gal (14.5 L) including reserve
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Maximum weight capacity: 485 lbs (220 kg)
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Tire pressure (Front/Rear): 3.6 psi (25 kPa), cold
Honda Manual Features & Selected Content Preview
This 2005 Honda owner's manual (P/N 31HN7610) covers the TRX400FA FourTrax Rancher AT and the TRX400FGA FourTrax Rancher AT with GPScape.
Printable PDF and Page Guide
Finding topics: The section contents, detailed table of contents, and alphabetical index are the ways to locate topics in this PDF. Text search and embedded bookmarks are unavailable.
The download is one printable, English-language PDF with 286 pages, including nine opening pages with the front cover, 272 numbered pages, four unnumbered Quick Reference pages, and the back cover. One of the numbered pages is blank apart from its footer.
Rancher AT Controls, GPScape, and Owner Maintenance
These selected topics illustrate the manual's coverage. It also includes break-in guidelines and a maintenance record.
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Controls and shifting: Multifunction display and indicator checks, oil change indicator reset, automatic shifting, manual ESP operation, and use of the selectable 2WD/4WD system.
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GPScape navigation: Position-fix troubleshooting, satellite-status displays, basic and advanced waypoint entry, the compass direction indicator, and automatic clock adjustment for the TRX400FGA.
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Engine and driveline maintenance: Maintenance schedules, step-by-step instructions for changing the engine oil and filter, rear final gearcase and differential oil changes, foam air cleaner service, and spark plug inspection.
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Brakes and tires: Front brake shoe lining clearance, rear brake lever and pedal freeplay, wear checks, water drainage from the brake drums, and temporary puncture repair guidance.
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Starting and electrical checks: Symptom-based starting charts, flooded-engine and recoil-start procedures, battery removal and charging, and replacement of the main and control-motor fuses.
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Riding and ownership: Pre-ride inspections, cargo rack and trailer load limits, hill and water-crossing guidance, transport tie-down illustrations, and storage preparation.
The manual suits ATV owners learning the controls and doing routine maintenance with basic mechanical skills and hand tools. Honda directs owners to qualified service for more difficult jobs that require special tools.
Rancher AT Controls and GPScape Operation
Component-location drawings identify the steering, throttle, brake, and starting controls. The starting and stopping section explains how the fuel valve, choke knob, starting primer knob, recoil starter, and engine stop switch are used.
Illustrations show the gearshift switches and shift lever alongside the upshift and downshift sequences. The controls section also explains the parking brake, accessory socket, and trailer hitch.
GPScape reception: The guide distinguishes a flashing antenna symbol during a failed position fix from a blinking GPS fault symbol that calls for dealer attention. This helps you tell a reception problem from a fault indication. Display illustrations show how to enter latitude and longitude and read the direction and straight-line distance to a waypoint.
Oil, Filters, and Brake Adjustments
The service section covers throttle freeplay, choke cable checks, idle adjustment with a tachometer, and spark arrester cleaning. It also explains how to inspect the driveshaft boots, engine guards, and skid plates.
The oil filter assembly drawing identifies the spring, washer, and O-rings. Incorrect filter installation can damage the engine. Twisting or wringing the foam air cleaner can tear it.
The front drums are hydraulic and the rear drum is mechanical. The rear wear indicator lets you check shoe wear without disassembly. Honda refers brake bleeding and shoe replacement to a dealer.
Troubleshooting and Repair Limits
Separate charts address a starter that will not turn, an engine that cranks without starting, and an engine that runs poorly. The manual also explains what to check when the ESP switches fail, the automatic transmission display flashes, or the oil temperature warning comes on. Wheel removal and installation are included for emergency service.
The separate Honda Service Manual provides valve-clearance adjustment and high-altitude carburetor modification procedures. This owner's manual covers basic fault checks. Internal engine and transmission repairs require separate service documentation, and the electrical section has no wiring diagrams.
Before maintenance or repair, park on a firm, level surface and stop the engine unless the procedure calls for it to run.
Oil Change Torque and Rear Brake Freeplay Examples
The engine oil change specifies 18 lbf-ft (25 N·m) for the engine oil drain plug and 13 lbf-ft (18 N·m) for the oil filter bolt.
The rear brake pedal and rear brake lever each have a freeplay range of 9/16–13/16 in (15–20 mm), measured at the tip of the respective control.
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