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Honda

Rancher 400 Service Manual Repair 2004-2007 TRX400

Rancher 400 Service Manual Repair 2004-2007 TRX400

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Vehicle data plateRef 145139
Brand
Honda
Vehicle
ATV
Models covered
Rancher 400, Rancher Series, TRX400
Years
2004, 2005, 2006, 2007
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your model year? Ask us before you buy
🏷️ Basic Information
Identification
Make:
Honda
Model:
Rancher 400 (TRX400)
Model Variants Covered:
TRX400, TRX400FA (Automatic), TRX400FGA (Automatic with IRS)
Model Years Covered:
2004, 2005, 2006, 2007
Codes
Chassis Code:
TRX400
👋 Introduction
Market Position
Positioning:
The Honda Rancher 400, also known as the FourTrax 400, was a popular and versatile utility ATV known for its reliability and capability across various terrains. This manual targets owners and technicians seeking comprehensive information for maintaining and repairing these machines.
Competitive Analysis
Competitors:
Competed with other 400cc-class utility ATVs from manufacturers like Yamaha (Grizzly 350/400), Suzuki (KingQuad 300/400), and Polaris (Sportsman 400).
Key Features
Features Of Atv:
Available in 2WD and 4WD configurations, with some models featuring Independent Rear Suspension (IRS). Known for its robust engine, comfortable seating, and capable utility features.
Manual Value Proposition:
This manual provides the essential technical data and procedural guidance to perform a wide range of maintenance and repair tasks, empowering users to maintain their Rancher 400 effectively and economically.
📋 Manual Details
Coverage Areas
Coverage:
Complete service, repair, maintenance, and troubleshooting for all model variations of the 2004-2007 Honda Rancher 400 ATVs. Includes full teardown and rebuild procedures.
Page Count
Page Count:
515 pages
Manual Type
Manual Type:
Service Manual / Repair Manual
Language
Language:
English
Format
Format:
Digital (PDF)
📖 Manual Coverage
Systems Covered
Engine:
Complete engine overhaul, including piston, rings, cylinder, crankshaft, connecting rod, valves, camshaft, valve clearance adjustment, timing, lubrication system, cooling system (radiator, coolant), starter motor, flywheel, stator, ignition system (spark plug, coil, CDI), fuel system (carburetor, fuel pump, PGM-FI for applicable models).
Transmission:
Complete transmission rebuild for both manual and automatic transmission (AT) variants, including gearshift mechanism, clutch, primary reduction gear, drive train, shafts, and associated components. Covers fluid changes and maintenance.
Suspension:
Front and rear suspension systems, including forks, struts, linkage, swingarm, shocks, springs, and associated hardware. Covers adjustment, maintenance, and repair.
Electrical:
Complete electrical system, including battery, charging system (rectifier/regulator), lighting (headlights, taillights, indicators), ignition system, starter system, switches, wiring harnesses, fuses, and error code diagnostics.
Bodywork:
Body panels, fenders, plastics, seat, handlebars, and associated trim. Covers removal, installation, and replacement.
Brakes
Brakes:
Hydraulic brake system, including master cylinders, calipers, brake lines, brake pads, brake rotors, parking brake, and bleeding procedures. Covers inspection, service, and replacement.
Procedures Included
Maintenance:
Scheduled maintenance, fluid changes (engine oil viscosity, coolant, brake fluid), filter replacement (oil, air), spark plug replacement, tire pressure checks, lubrication points, and general upkeep. Includes maintenance schedules.
Troubleshooting:
Comprehensive troubleshooting guides for common and uncommon issues, including no spark, starting problems, engine misfires, electrical faults, transmission issues, and braking problems. Includes diagnostic procedures and error code explanations.
Repair Overhaul:
Detailed step-by-step instructions for complete teardown and rebuild of all major vehicle components, including engine, transmission, suspension, and braking systems. Includes procedures for component replacement and overhaul.
Installation:
Instructions for installing various parts and accessories, as well as procedures for reassembling components after repair or overhaul.
Technical Depth
Depth:
Extensive technical depth, covering everything from basic maintenance and adjustments to complete engine and transmission rebuilds. Includes detailed diagnostic procedures, torque specifications, and schematics.
📊 Manual Specifications
File Format
File Format:
PDF
Print Quality
Print Quality:
High-resolution, printable pages with clear diagrams and text.
Binding Type
Binding Type:
N/A (Digital Download)
Paper Type
Paper Type:
N/A (Digital Download)
Features
Searchability:
Fully searchable PDF with clickable chapters for easy navigation.
Usage Rights:
No restrictions on printing or saving/burning to disc.
⚙️ Engine Specifications
Primary Engine
Engine Type:
4-stroke, OHV, air-cooled, single-cylinder
Displacement:
397 cc
Bore X Stroke:
85 mm x 70 mm
Compression Ratio:
8.5:1
Performance
Horsepower:
Approx. 27 HP (Varies slightly by year/model)
Torque:
Approx. 23 lb-ft (Varies slightly by year/model)
Fuel System
Fuel Delivery:
Carburetor (Keihin 37mm CV for most models), PGM-FI (Fuel Injection) on certain later automatic models.
Fuel Type:
Unleaded gasoline, 87 octane or higher recommended.
Lubrication
Oil Type:
Honda GN4 10W-40 4-stroke motorcycle oil recommended. SAE 10W-30 or 10W-40 also acceptable.
Oil Capacity:
Approx. 2.0 US qt (1.9 L) with filter change.
Cooling System
Cooling Method:
Air-cooled
Ignition
Ignition Type:
CDI (Capacitor Discharge Ignition)
Spark Plug
Recommended Spark Plug:
NGK CR7EH-9 or equivalent.
🔧 Transmission
Standard
Transmission Type:
5-speed manual with reverse (standard on TRX400/TRX400FGA), Torque Converter Automatic (AT) transmission (standard on TRX400FA).
Optional
Optional Transmission:
Not applicable, variants are factory equipped.
Features
Drive System:
Shaft drive
Final Drive:
O-ring sealed chain
Transmission Fluid
Transmission Fluid Type:
SAE 80 hypoid gear oil recommended for shaft drive.
📐 Dimensions
Exterior
Overall Length:
Approx. 77.4 inches (1966 mm)
Overall Width:
Approx. 45.1 inches (1145 mm)
Overall Height:
Approx. 42.2 inches (1072 mm)
Wheelbase:
Approx. 49.2 inches (1250 mm)
Weights
Dry Weight:
Approx. 570 lbs (259 kg)
Curb Weight:
Approx. 595 lbs (270 kg) (with all fluids)
Capacities
Fuel Tank Capacity:
3.0 US gallons (11.5 L), including 0.7 US gal (2.6 L) reserve.
Towing Capacity:
Not officially specified, but typically around 500 lbs (227 kg) for utility tasks.
Dimensions
Ground Clearance:
Approx. 7.2 inches (183 mm)
🛡️ Safety Features
Ratings
Safety Features Overview:
ATVs are inherently designed for off-road use and require careful operation. This manual covers safety procedures and maintenance of safety-related systems.
Active Features
Braking System:
Hydraulic disc brakes front and rear for strong stopping power.
4Wd System:
Selectable 2WD/4WD system (on 4WD models) for enhanced traction.
Passive Features
Ergonomics:
Comfortable saddle-type seat and intuitive controls for rider comfort and control.
Lighting:
Dual 30W headlights and a 30W brake/taillight for visibility.
💡 Technology Features
Infotainment
Infotainment Features:
Basic instrumentation including speedometer, odometer, trip meter, and indicator lights. No advanced infotainment systems.
Driver Assistance
Driver Assistance Features:
Selectable 2WD/4WD, neutral indicator, reverse gear. The automatic transmission models (FA/FGA) offer enhanced ease of use.
Connectivity
Connectivity Features:
N/A
🔧 Maintenance
Service Intervals
Engine Oil Change:
Every 1,000 miles (1600 km) or 6 months, whichever comes first. More frequently under severe use.
Air Filter Cleaning:
Check every 6 months or 500 miles (800 km). Clean more frequently in dusty conditions.
Spark Plug Maintenance:
Inspect and clean/gap spark plug every 1,000 miles (1600 km) or annually. Replace as needed.
Valve Clearance Check:
Every 2,000 miles (3200 km) or 12 months.
Fluid Specifications
Coolant Type:
Permanent type antifreeze (ethylene glycol-based), 50/50 mix with distilled water.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Known Issues
Common Problems:
Carburetor issues (clogging, tuning), occasional electrical connector corrosion, wear on suspension components with high mileage, starter solenoid issues.
Maintenance Tips:
Regular cleaning of the air filter, proper fuel storage, and timely oil changes are critical for longevity. Pay attention to the integrity of electrical connections, especially in wet environments.
📚 Vehicle History
Brand Heritage
Honda Atv Legacy:
Honda has a long and distinguished history in the ATV market, being one of the pioneers of the industry. The Rancher line has been a cornerstone of their utility ATV offerings for decades.
Model Evolution
Rancher Lineage:
The Rancher 400 evolved from earlier 300cc models, incorporating a larger engine and enhanced features. The 2004-2007 generation saw the introduction and refinement of automatic transmission and IRS options.
Production
Production Period:
The TRX400 model was produced from 2004 through 2007. It was largely replaced in the lineup by the Rincon 680 and further iterations of the Rancher 420.
🏆 Awards & Recognition
Recognitions
Industry Recognition:
Honda ATVs consistently receive praise for their reliability and build quality in industry reviews and owner satisfaction surveys. Specific awards for the 2004-2007 Rancher 400 are not widely cataloged as individual model awards but are part of Honda's broader ATV reputation.

Delivery & file format

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Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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