1986-1989 Honda TRX 250R Fourtrax Service Manual

Addresses front suspension, steering linkage, and rear drivetrain systems including hub bearing inspection, knuckle removal, shock absorber disassembly, and brake pad replacement procedures. Complete torque specifications and diagnostic charts for ATV maintenance.

4.7starstarstarstarstar_half(3)
visibility Preview Available
$17.95 Original OEM Factory Manuals & Data Instant Download / No Shipping Fees
OR BUY NOW
verified_user
Lifetime Access
Re-download anytime
flash_on
Instant Download
Get it immediately
lock
Secure Payment
PayPal

Honda Models Covered & Key Technical Specifications

Models: Honda TRX 250R Fourtrax

Model Years: 1986–1989

Technical Data:

  • Engine: Liquid-cooled 2-stroke single cylinder

  • Displacement: 246 cc

  • Transmission: 6-speed constant mesh

  • Compression Ratio: 7.5:1 (1986), 7.7:1 (1987–1989)

  • Carburetor: Piston valve (34 mm venturi)

  • Fuel Capacity: 10.0 L (2.64 US gal)

  • Engine Oil Capacity: 0.6–0.7 L

  • Spark Plug: NGK BR8ES/BR9ES, Champion RN3C/RN2C

  • Idle Speed: 1,500 ± 150 rpm

  • Drive System: Chain drive

Technical Specifications
keyboard_arrow_down
Document Number / Seller:
23912 / Jennifer Rodriguez
File Size:
13.26 MB
File Type:
PDF
Language:
English
Pages:
224
Printable:
Yes
Category:
ATV
Last updated / verified
Jun 4, 2026

Honda Manual Features & Content Preview

1986–1989 Honda TRX 250R Factory Service Manual

Getting the right specs on the bench fast is critical when you are tearing down a vintage 2-stroke. This 224-page factory service manual covers the complete 1986–1989 Honda TRX 250R Fourtrax production run. Because it is an instant download, you can pull up engine clearances or suspension geometry on your phone or tablet right at the workbench. No waiting for shipping, and no greasy fingerprints ruining expensive paper pages. It delivers a complete component-level breakdown of the engine, transmission, balancer, and crankshaft systems.

Tuning these liquid-cooled machines requires absolute precision. That is why the documentation details comprehensive fuel system tuning data, including jet needle settings and carburetor theory for varying altitudes and temperatures. Beyond the power plant, you get full factory data for the Pro-Link rear suspension, steering geometry, and hydraulic disc braking systems. Always verify tolerances and wear limits against this official OEM data before reassembling critical chassis or engine components to ensure safe vehicle operation.

Technical Specifications & Manual Features

  • Covers all 1986–1989 Honda TRX 250R Fourtrax (liquid-cooled 2-stroke) ATVs.
  • Instant download directly to your account within seconds of checkout.
  • Lifetime access guarantees your file stays safely in your account forever.
  • Fully indexed PDF with full-text search allows you to locate specific part numbers in seconds.
  • Contains 47 exploded-view diagrams and 35 torque-specification tables for engine and chassis systems.
  • Key assembly specs included: Cylinder head bolt torque (24–29 N·m / 17–21 ft·lb), spark plug gap (0.7–0.8 mm), and front tire pressure (4.0 psi).
  • Suitable for printing individual sections directly for shop-floor use.
  • Reference how factory workshop documentation is structured to see the exact technical depth of this September 1988 official Honda publication.
Technical Safety Notice
keyboard_arrow_down

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.

Customer Reviews

Read what our customers say about this Honda ATV manual and share your own experience.