1986-1989 Honda TRX250R FourTrax Service Manual

Wiring diagrams, specifications, and repair sequences for your 1986-1989 Honda TRX250R FourTrax 250R. Publication C4085-91017.

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Document Details

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Document Number / Seller:
24443 / Joshua Boyd
File Size:
13.62 MB
File Type:
ZIP
Language:
English
Pages:
224
Printable:
Yes
Category:
ATV
Last updated / verified
Oct 14, 2025

Models Covered & Key Technical Specifications

Honda TRX250R FourTrax 250R (Honda Motor Corporation Ltd) Manual: Honda TRX250R FourTrax 250R, 1986-1989 models Reference Resource Documentation | Series Series

  • Design Charge Quantity: 0.7 lit (0.74 U.S. qt.) signifies the engine oil capacity Standards.
  • Key Alignment Specs: For rear axle outer lock nut, 80–100 N·m (8.0–10.0 kg-m, 58–72 ft-lb) defines the torque specification Bounds.
  • Prescribed Power Framework: 35 N·m (3.5 kg-m, 25 ft-lb) -- denotes the torque for the rear caliper bracket mounting bolt Topology.
  • Nominal Throughput Data: The formatter board requires 64 MB for standard operation Logic.
  • Design Gross Dimensions: The front wheel hub nut requires 120–170 N·m (12.0–17.0 kg-m, 87–123 ft-lb) for proper tightening Matrix.
  • Designated Capacity Limits: The caliper mounting bolt requires 20–30 N·m (2.0–3.0 kg-m, 14–22 ft-lb) for secure installation Standards.

Manual Description & Preview

Honda TRX250R FourTrax 250R Manual: Honda TRX250R FourTrax 250R, 1986-1989 models

Design-Core: TRX250R FourTrax 250R / Honda Motor Corporation Ltd // Model-Portfolio: ATV / FourTrax Logic // Coverage-Scope: 1986, 1987, 1988, 1989 technical-details.

Technical chapters are organized around:

  • Front Brake System Diagrams
  • Rear Suspension Specifications
  • Engine Removal Procedures
  • Drive Train Torque Values
  • Troubleshooting Guides

Completely establishing the operational parameters for the TRX250R FourTrax 250R, this manual details the systems and procedures necessary for maintenance and repair. It serves as a crucial resource for understanding the vehicle's complex layout.

Front Brake System Information

Inspection guidelines are provided for brake pads and discs, covering thickness and runout measurements. This section includes details on caliper mounting and disassembly.

Rear Suspension Component Overviews

Alignment specifications are included for shock absorber spring preload and damper rod compression force. It details the necessary procedures for swingarm and linkage maintenance.

Engine Core Procedures

Reference data is included for engine removal, including torque specifications for mounting bolts. It also outlines the procedures for transmission and crankshaft service.

Drive Train Maintenance

This manual covers the drive chain slack inspection and adjustment procedures. It also details the installation and removal of the final driven sprocket.

Troubleshooting and Diagnostics

Diagnostic procedures are covered for common issues such as brake lever/pedal sponginess and brake drag. It provides insight into identifying and resolving mechanical problems.

This document documents torque specifications for various components to ensure proper service interval reliability.

FAQ

What model years of the Honda TRX250R FourTrax are represented in this 224-page PDF document? keyboard_arrow_down

Service manual includes coverage for the Honda TRX250R FourTrax 250R produced during the 1986 through 1989 model years.

Does this technical document contain exploded view diagrams of the transmission and crankshaft assemblies? keyboard_arrow_down

Yes, the manual contains detailed exploded view illustrations for the transmission, crankshaft, and various other internal engine components to assist in visual reference.

What type of specification data is included in the General Information and Maintenance chapters? keyboard_arrow_down

These chapters provide specification tables that cover categories such as tightening torque values, fluid capacities, standard dimension limits, and periodic maintenance schedules.

Are there wiring harness routing and cable management diagrams included for the electrical system? keyboard_arrow_down

Document contains dedicated sections with illustrations for cable and harness routing, including specific layout diagrams for the various control cables and wire harness paths.

Does the manual provide information on the specific special tools required for internal engine work? keyboard_arrow_down

Manual lists both special service tools by their designated numbers and compatible alternate tools, with references to the specific sections where each tool is intended to be used.

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