1987-1988 Honda TRX125 Fourtrax Service Manual

Documents service procedures for the 1987-1988 Honda TRX125 Fourtrax, covering engine removal, lubrication, fuel system, and electrical components. Part No. 6101000.

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Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Honda Models Covered & Key Technical Specifications

Models: 1987–1988 Honda TRX125 Fourtrax
Build Years: 1987, 1988
Technical Data:

  • Engine: Gasoline, air-cooled 4-stroke, 124.8 cc, 9.0:1 compression ratio
  • Maximum Power: 9.3 BHP at 7,500 rpm
  • Maximum Torque: 0.96 kg-m (16.9 ft-lb) at 6,000 rpm
  • Transmission: 5-speed constant-mesh with reverse
  • Clutch: Wet multi-plate automatic
  • Fuel Tank Capacity: 7.5 liters (1.98 US gal)
  • Valve Clearance (Cold): 0.08 mm (0.003 in) for both intake and exhaust
  • Ignition Timing: 10° ± 2° BTDC at idle, 28° ± 2° BTDC at 5,000 rpm
  • Spark Plug: NGK DR8ES-L or ND X24ESR-U
Technical Specifications
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Document Number / Seller:
31836 / Patricia Cooper
File Size:
20.80 MB
File Type:
PDF
Language:
English
Pages:
193
Printable:
Yes
Category:
ATV
Last updated / verified
Feb 16, 2025

Honda Manual Features & Content Preview

1987–1988 Honda TRX125 Fourtrax Service Manual

  • Covers 1987–1988 Honda TRX125 Fourtrax, featuring 4-stroke 124.8 cc engine, 5-speed constant-mesh transmission, and wet multi-plate automatic clutch
  • Official OEM publication P/N 6101000, 1987–1988 edition
  • Contains 193 pages of technical content, including engine assembly illustrations, torque tables for 40+ chassis/engine components, and electrical wiring schematics
  • File delivers the moment payment clears, with an optimized digital layout for printing specific sections for shop-floor reference
  • Indexed PDF search covers every chapter and appendix to find maintenance specs, troubleshooting, and component diagrams instantly
  • Stored against your account so you can retrieve it after a hard-drive loss
  • This 1987–1988 Honda TRX125 Fourtrax OEM service manual provides the factory data for engine, chassis, and electrical maintenance, specifically documenting the single-cylinder configuration and reverse-gear transmission mechanics for the Fourtrax model line

Technical Scope and Structure

This 1987–1988 Honda TRX125 Fourtrax service manual documents all procedures for machine upkeep and teardown. It organizes content from broad general information, including what an OEM service publication covers, to specific engine, chassis, and electrical system modules. Detailed sections clarify the removal, installation, and assembly requirements for the 124.8 cc Fourtrax engine, while chassis chapters focus on steering geometry, brake systems, and final drive maintenance.

Specification Highlights

Technical data previews include specific values for engine performance and maintenance thresholds. The cylinder head bolt torque is documented at 28–30 N-m (20–22 ft-lb). Intake and exhaust valve clearances are set at 0.08 mm. Fuel system capacity for the 1987–1988 Honda TRX125 Fourtrax is rated at 7.5 liters. Cylinder compression is specified at 13.3 ± 1.0 kg/cm². The manual serves as the definitive reference for servicing the 1987–1988 Honda TRX125 Fourtrax, documenting engine, chassis, and electrical specifications for original unit restoration.

Manual FAQ, Purchase & Download Details

Which engine specification tables include data for oil capacities and lubrication system reference values? keyboard_arrow_down

Manual includes a dedicated specification section that lists total oil capacity at draining and various oil viscosity recommendations for different temperature ranges.

Are the publication number and edition details provided for the 1987-1988 Honda TRX125 Fourtrax Service Manual? keyboard_arrow_down

Document is identified as Part No. 6101000, which serves as the official reference for the 1987-1988 Honda TRX125 Fourtrax. It covers detailed system information across 193 pages in an electronic PDF format.

Is the ignition system covered in this service manual? keyboard_arrow_down

Contents page references specific sections for the ignition system, battery charging system, and starter system.

What kind of wiring diagrams and electrical reference values are contained in the electrical chapters? keyboard_arrow_down

Manual contains sections for the ignition system, battery and charging system, and starter system. It includes cable and harness routing diagrams to assist with identifying wire paths. These chapters also provide reference specifications for components like spark plugs and indicator bulbs.

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