🏷️ Basic Information

Make:

Honda

Model:

Fourtrax 250

Model Code:

TR250 / TRX250

Product Type:

Service Repair Manual

Generation Identifier:

First Generation (1984-1987)

Production Years Covered:

1985, 1986, 1987

👋 Introduction

Historical Significance:

The Honda Fourtrax 250 was a pivotal model in the early development of the utility ATV market, establishing Honda's reputation for reliability and ruggedness.

Key Competitors Era:

Competed against models from Yamaha (like the YFM200 Moto-4) and Suzuki during its production run.

Selling Points:

Known for its dependable engine, robust chassis, and comfortable rider ergonomics for its time.

Manual Benefit:

Empowers owners and technicians to perform accurate repairs and maintenance, preventing costly mistakes and ensuring longevity of the ATV.

Primary Users:

Honda Fourtrax 250 owners, DIY mechanics, ATV enthusiasts, restoration projects.

📋 Manual Details

Covered Models:

Honda Fourtrax 250 (TR250/TRX250) all variations within the 1985-1987 model years

Estimated Page Count:

Approximately 250-350 pages (typical for this era's comprehensive service manuals)

Manual Type:

Comprehensive Service and Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine System:

Complete engine overhaul, disassembly, assembly, tuning, performance checks, lubrication, cooling system, ignition system, starting system, charging system.

Transmission System:

Manual transmission repair, clutch operation and adjustment, gear shifting mechanisms, lubrication.

Drivetrain System:

Shaft drive operation, differentials, axle maintenance and repair, CV joint servicing.

Suspension System:

Front and rear suspension design, shock absorber inspection and replacement, steering knuckle, control arm servicing, wheel alignment.

Braking System:

Drum brake system maintenance, adjustment, shoe replacement, hydraulic system (if applicable on later models, though likely drum on this era), parking brake.

Electrical System:

Wiring diagrams, lighting system, ignition coil, CDI unit, battery, starter motor, charging system (stator, rectifier/regulator), fuses, switches.

Fuel System:

Carburetor removal, cleaning, adjustment, fuel tank, fuel line maintenance, fuel filter replacement.

Frame And Bodywork:

Chassis inspection, body panel removal and installation, seat, fenders, handlebars, control cables.

Cooling System:

Air-cooled engine design, cylinder head cooling fins, fan maintenance (if applicable).

Routine Maintenance:

Oil changes, filter replacements, spark plug checks, chain/drive shaft lubrication, air filter cleaning, brake adjustments, tire pressure checks.

Troubleshooting Guide:

Diagnostic charts for common starting, running, and electrical problems.

Disassembly And Assembly:

Step-by-step instructions for component removal and reinstallation for all major systems.

Repair Instructions:

Detailed repair procedures for worn or damaged components.

Special Tools:

Identification and usage of specialized tools required for specific repairs.

Diagnostic Capabilities:

Covers basic to intermediate diagnostics, fault finding, and systematic troubleshooting.

Rebuild Procedures:

Includes procedures for complete engine and transmission rebuilds.

Specifications And Tolerances:

Provides detailed torque specifications, clearances, and measurement tolerances for critical components.

Wiring Diagrams:

Includes comprehensive, easy-to-read wiring diagrams for electrical system diagnosis and repair.

📊 Manual Specifications

File Format:

Portable Document Format (PDF)

Print Quality:

High-resolution scans for clear text and legible diagrams. Printable.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

4-stroke, OHV, air-cooled

Engine Displacement:

246 cc (Cubic Centimeters)

Bore X Stroke:

68.0 mm x 68.6 mm

Compression Ratio:

8.5:1 (Approximate, can vary slightly by specific sub-model/year)

Horsepower Output:

Approximately 16-18 HP @ 6,500 RPM (Estimate based on typical specifications for this engine size and era)

Torque Output:

Approximately 14-16 lb-ft @ 5,000 RPM (Estimate)

Carburetor Type:

Keihin carburetor (specific model varies, e.g., PD4A or similar)

Fuel Delivery:

Gravity feed from fuel tank, 26mm carburetor bore

Ignition Type:

CDI (Capacitor Discharge Ignition)

Oil Type:

SAE 10W-30 API SE or SF classification motorcycle oil (preferred)

Oil Capacity:

Approximately 1.6 US qt (1.5 Liters) (Check manual for exact figure)

Cooling Method:

Forced Air Cooling (Cylinder head and barrel cooling fins)

🔧 Transmission

Transmission Type:

5-speed manual with automatic clutch

Reverse Gear:

Yes, typically a dedicated reverse gear.

Clutch Operation:

Semi-automatic clutch actuation (leverless operation).

Transmission Oil Type:

API GL-4 SAE 80W gear oil (or equivalent motorcycle transmission oil)

Transmission Oil Capacity:

Approximately 0.6 US qt (0.55 Liters) (Check manual for exact figure)

📐 Dimensions

Overall Length:

Approximately 73.2 inches (1859 mm)

Overall Width:

Approximately 42.5 inches (1080 mm)

Overall Height:

Approximately 42.7 inches (1085 mm)

Wheelbase:

Approximately 47.2 inches (1199 mm)

Dry Weight:

Approximately 320 lbs (145 kg)

Fuel Capacity:

Approximately 2.6 US gallons (9.8 Liters), including 0.5 gallon reserve

Front Tire Size:

AT23x8-11 (or similar)

Rear Tire Size:

AT24x10-9 (or similar)

Front Brake Type:

Drum

Rear Brake Type:

Drum (with integrated parking brake)

🛡️ Safety Features

Atv Safety Standards:

Designed to meet applicable ANSI standards for ATVs of its era. Manual will detail safe operation practices.

Throttle Limiter:

Often equipped with a throttle limiter screw for new riders.

Lighting:

Headlight, taillight/brake light for visibility.

Rider Positioning:

Ergonomic seating and handlebar design for rider control.

💡 Technology Features

Infotainment Features:

None (Basic utility vehicle, no entertainment systems).

Driver Assistance Features:

None (Basic utility vehicle, no electronic driver aids).

Connectivity Options:

None (Basic utility vehicle, no electronic connectivity).

🔧 Maintenance

Engine Oil Change Interval:

Every 1,000 km (600 miles) or 6 months (typical, check manual for exact)

Spark Plug Check Interval:

Every 1,000 km (600 miles) or annually

Air Filter Cleaning Interval:

Every 500 km (300 miles) or more frequently in dusty conditions

Transmission Oil Change Interval:

Every 5,000 km (3,000 miles) or annually

Engine Oil Viscosity Recommendation:

10W-30 (suitable for most operating temperatures)

Brake Fluid Type:

DOT 3 or DOT 4 (if hydraulic elements are present; typically drum brakes on this model)

Common Wear Items:

Brake shoes, steering tie rods, carburetor jets (clogging), suspension bushings, starter motor brushes.

Carburetor Performance:

Can be prone to gumming up if fuel sits for extended periods; requires periodic cleaning and adjustment.

Electrical Connections:

Corrosion in electrical connectors can lead to intermittent issues; manual will cover troubleshooting.

📚 Vehicle History

Honda Atv Legacy:

Honda revolutionized the ATV market with the original ATC (All-Terrain Cycle) and continued this innovation with the Fourtrax line, emphasizing reliability and rider comfort.

Fourtrax 250 Lineage:

The 1985 Fourtrax 250 was a successor to earlier ATC models and laid the groundwork for future, more advanced Fourtrax models, including the introduction of shaft drive and independent front suspension on later iterations.

Manufacturing Location:

Primarily manufactured in Japan.

🏆 Awards & Recognition

Market Reputation:

Recognized for its reliability and durability, earning a strong reputation among ATV users for its class.

Consumer Satisfaction:

Generally high owner satisfaction for its intended use and dependable nature.