TRX250R Service Manual Repair 1986-1989 TRX 250R

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Typ: Atv

Anbieter:

Art.-Nr: 120946

Stichworte: 1986 1987 1988 1989 ATC Series Atv Honda Motorcycles TRX250R

Produktvarianten

Beschreibung

The Honda TRX250R is a highly influential sport All-Terrain Vehicle (ATV) that defined performance standards for its class during the late 1980s. Produced from 1986 to 1989, this Japanese-manufactured machine is renowned for its agility, power, and suitability for off-road racing and sport riding. It features a responsive 246cc, two-stroke, liquid-cooled, single-cylinder engine, paired with a 5-speed manual transmission and automatic clutch, delivering a lightweight yet potent performance. The TRX250R is characterized by its sport-oriented ergonomics, hydraulic disc brakes for reliable stopping power, and a robust chassis designed for demanding terrain. This comprehensive Service and Repair Manual, written in English, covers the Honda TRX250R models from 1986 through 1989. It serves as an essential resource for owners, mechanics, and technicians, providing detailed guidance on maintenance, repair, and troubleshooting. The manual offers extensive coverage of all major systems, including engine mechanicals, fuel and ignition systems, transmission, drivetrain, suspension, steering, braking, electrical components, and body/chassis. It includes step-by-step procedures for routine servicing, complete rebuilds, part replacement, and adjustments, along with diagnostic information, torque specifications, and clear illustrations to ensure accurate and efficient upkeep of the vehicle.

🏷️ Basic Information

Identification

Make:

Honda

Model:

TRX250R

Generation:

First Generation (ATV)

Chassis Code:

TRX250R

Vehicle Type:

All-Terrain Vehicle (ATV)

Codes

Engine Code Identifier:

Two-Stroke, Liquid-Cooled, Single-Cylinder

👋 Introduction

Market Position

Segment:

High-performance sport ATV

Competitive Analysis

Rivals:

Yamaha Warrior, Suzuki LT250R, Kawasaki Tecate-4

Key Features

Performance Focus:

Designed for agility, power, and off-road racing/sport riding.

Engine Type:

Two-stroke technology for lightweight power and responsiveness.

📋 Manual Details

Coverage Areas

Years Covered:

1986, 1987, 1988, 1989

Sub Models Covered:

All TRX250R variants within the specified years.

Page Count

Total Pages:

Manual Type

Type:

Service and Repair Manual

Language

Primary Language:

English

Format

File Format:

PDF (Downloadable)

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Complete teardown, rebuild, piston, cylinder, crankshaft, conrod, lubrication, cooling system.

Fuel System:

Carburetor (main jet, slow jet, mixture screw, idle adjustment), fuel pump, fuel tank, fuel lines, fuel filter.

Ignition System:

Magneto, stator, CDI unit, spark plug, ignition coil, electrical troubleshooting, no spark diagnosis.

Transmission Drivetrain:

Gearbox, clutch, primary reduction gear, drive train components, linkage.

Suspension Steering:

Front forks, rear suspension (shocks, swingarm/swinger), steering system, triple tree.

Braking System:

Front and rear brakes (discs, calipers, pads), hydraulic system, brake lines, brake levers.

Electrical Components:

Battery, starter motor, charging system (rectifier, regulator), lights, switches, wiring diagrams (schematics).

Body Chassis:

Frame, fenders, plastics, body panels, seat, handlebars.

Exhaust System:

Muffler, header pipe, exhaust gasket replacement and maintenance.

Procedures Included

Maintenance Schedule:

Regular servicing, fluid changes, lubrication points, tire pressure checks.

Troubleshooting:

Comprehensive guides for common problems (e.g., starting issues, no spark, poor performance, misfires).

Rebuilds Overhauls:

Detailed instructions for complete engine rebuilds, transmission overhauls, and suspension component servicing.

Installation Replacement:

Step-by-step guides for replacing parts, installing accessories, and making adjustments.

Torquing Procedures:

Detailed torque specifications for all critical fasteners and components.

Engine Tuning:

Carburetor adjustment, jetting recommendations, and performance tuning tips.

Technical Depth

Diagnostic Capability:

Advanced diagnostics and troubleshooting for electrical and mechanical systems.

Repair Scope:

Full repair and restoration procedures, suitable for DIY mechanics and professional technicians.

Information Type:

Includes torque specifications, clearances, fluid capacities, part diagrams, and illustrations.

Diagrams Illustrations:

Extensive use of pictures, part diagrams, and illustrations to aid understanding.

📊 Manual Specifications

File Format

Searchability:

Yes, searchable text within the PDF.

Print Quality

Printable:

Yes, no printing restrictions.

Binding Type

Digital Format:

Downloadable PDF

Paper Type

Digital Storage:

User's discretion (saving/burning to disc allowed).

⚙️ Engine Specifications

Primary Engine

Configuration:

246cc, 2-stroke, liquid-cooled, single-cylinder

Bore X Stroke:

Approximately 68.0 mm x 68.0 mm (typical for this era)

Compression Ratio:

Typically around 6.8:1 to 7.2:1 (manual will provide exact specs)

Performance

Horsepower Estimate:

Estimated 20-25 HP (at the crank, specific figures in manual)

Torque Estimate:

Estimated 18-20 lb-ft (at the crank, specific figures in manual)

Cooling System:

Liquid-cooled (radiator, fan, coolant passages)

Fuel System

Carburetor Size:

Likely a Keihin 26mm or 28mm carburetor (exact model and specs in manual).

Fuel Type Recommendation:

Unleaded gasoline with appropriate two-stroke oil mix (manual will specify ratio).

Lubrication

Oil Type Recommendation:

2-stroke engine oil meeting specific API/JASO standards (specified in manual).

🔧 Transmission

Standard

Type:

5-speed manual with automatic clutch

Features

Final Drive:

Chain drive

Transmission Fluid Spec:

Manual transmission oil (MTF) or specific gear oil (as per manual).

📐 Dimensions

Exterior

Length:

Approx. 70-72 inches (1778-1829 mm)

Width:

Approx. 45-47 inches (1143-1194 mm)

Weights

Dry Weight:

Approx. 340-360 lbs (154-163 kg)

Fuel Capacity:

Approx. 2.6 gallons (9.8 liters)

🛡️ Safety Features

Ratings

Atv Safety Standards:

Compliant with relevant safety standards for ATVs of its era.

Active Features

Braking System Type:

Hydraulic disc brakes front and rear

Passive Features

Ergonomics:

Sport-oriented riding position, comfortable seat, accessible controls.

💡 Technology Features

Infotainment

Features:

N/A (basic instrumentation: speedometer, odometer, indicator lights)

Driver Assistance

Features:

N/A (mechanical systems only)

Connectivity

Features:

🔧 Maintenance

Service Intervals

Oil Change Frequency:

As per manual recommendations, typically every 20-30 engine hours or annually.

Spark Plug Replacement:

Regular checks and replacement as indicated by performance or manual guidelines.

Fluid Specifications

Cooling System Coolant:

Honda Genuine Coolant or equivalent ethylene glycol-based coolant (specified in manual).

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid (as specified in manual).

Known Issues

Common Wear Items:

Clutch plates, piston rings, seals, wheel bearings, suspension bushings, carburetor jets.

Electrical Concerns:

Potential for stator or CDI failure, rectifier issues (all covered in troubleshooting section).

Engine Performance Notes:

Proper jetting and exhaust tuning are critical for optimal performance; air leaks can cause lean conditions.

📚 Vehicle History

Brand Heritage

Honda Atv Legacy:

Honda's pioneering role in the ATV market, known for reliability and performance.

Model Evolution

Trx250R Significance:

A highly influential sport ATV that defined performance for its class in the late 80s.

Production

Manufacturing Origin:

Japan