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.
Competitors:
Competed with other 400cc-class utility ATVs from manufacturers like Yamaha (Grizzly 350/400), Suzuki (KingQuad 300/400), and Polaris (Sportsman 400).
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.
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:
Hydraulic brake system, including master cylinders, calipers, brake lines, brake pads, brake rotors, parking brake, and bleeding procedures. Covers inspection, service, and replacement.
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.
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.
Engine Type:
4-stroke, OHV, air-cooled, single-cylinder
Bore X Stroke:
85 mm x 70 mm
Horsepower:
Approx. 27 HP (Varies slightly by year/model)
Torque:
Approx. 23 lb-ft (Varies slightly by year/model)
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.
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 Method:
Air-cooled
Ignition Type:
CDI (Capacitor Discharge Ignition)
Recommended Spark Plug:
NGK CR7EH-9 or equivalent.
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)
Dry Weight:
Approx. 570 lbs (259 kg)
Curb Weight:
Approx. 595 lbs (270 kg) (with all fluids)
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.
Ground Clearance:
Approx. 7.2 inches (183 mm)
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.
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.
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.