2006-2011 Honda TRX250EX / TRX250X Service Manual

Troubleshooting, parts diagrams, and service data for engine, transmission, clutch, brakes, suspension, and final drive systems. 371-page comprehensive technical reference.

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Document Details

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Document Number / Seller:
25205 / Margaret Rogers
File Size:
36.54 MB
File Type:
PDF
Language:
English
Pages:
371
Printable:
Yes
Category:
ATV
Last updated / verified
May 5, 2025

Models Covered & Key Technical Specifications

Honda TRX250EX, TRX250X — 2006–2011 Consolidated Mechanical Primer | TRX250 Series Kit.

  • Calibrated Mass Specs: 172 kg (379 lbs) is specified as the vehicle curb weight Standard.
  • Measured Gross Dimensions: For complete capacity, 229.2 cc (14 cu in) governs the engine displacement Norms.
  • Advanced Torque Data: The crankshaft requires 9.2:1 compression ratio for combustion chamber operation Bounds.
  • Standard Containment Volume: Fuel tank reaches 10.2 L (2.7 US gal) for TRX250EX models Topology.
  • Principal Current Rating: Cylinder compression is rated at 1,275 kPa (185 psi) at 800 rpm Matrix.
  • Key Rotation Data: Maximum idle speed sets the engine to 1,400 ± 100 rpm Standards.

Professional Workshop Service Manual & Technical Specifications

Specialized Factory Wiring Manual: Honda TRX250EX, TRX250X Service Manual (2006-2011) - Comprehensive Repair Guide Parts-Reference

Equipment-Series: TRX250EX (2006-2011), TRX250X (2006-2011) // Coverage-Scope: Single Cylinder OHV Engine Systems / Centrifugal and Change Clutch Logic // Unit-Designations: 371-page professional documentation covering complete powertrain and electrical reference data.

Performance-Element Technical-Path Validation-Data
Engine & Transmission Displacement 229.2 cm³ with constant mesh 5-speed transmission Complete specifications provided
Lubrication Systems Forced pressure and wet sump with trochoid oil pump Documented clearances and thresholds
Brake Systems Hydraulic front disc, mechanical rear drum architecture See Chapters 15-16
Electrical Charging Single phase output alternator with SCA rectification Charging voltage specifications included
Suspension & Steering Double wish-bone front, swingarm rear with dampers Component service procedures included

Factory procedures are documented for frame and body panel service, then advance to lubrication system inspection, proceed through fuel system assembly protocols, and conclude with comprehensive electrical system verification. The manual specifies service intervals following EPA and CARB emission standards throughout its reference section.

Systematic Nexus

Quality checks are addressed for general maintenance procedures, valve clearance adjustment, and carburetor fuel-air mixture calibration. The document includes detailed specifications across all powertrain subsystems, with particular rigor applied to torque application data for critical fasteners. Component identification numbers, service limits, and replacement part cross-references are systematically organized by assembly location.

Structured Interface

The troubleshooting chapter addresses compression diagnostics, ignition system peak voltage testing, and transmission operational verification. Cooling system maintenance is addressed in the lubrication and oil cooler sections with explicit flow requirements. Test procedures for starter motor continuity, charging system output, and brake system hydraulic pressure are provided with reference voltage ranges and resistance measurements.

Structured Methodology

Testing requirements are specified for cylinder head valve timing, spark plug electrode gap verification, and clutch lever freeplay adjustment. The manual documents systematic disassembly and inspection protocols for all major subsystems, including crankcase separation procedures, transmission gear evaluation, and bearing clearance measurement techniques. Detailed component location diagrams supplement text-based service procedures throughout.

The service manual documents torque specifications for engine fasteners to ensure proper load distribution and vibration dampening.

FAQ

What procedures are **necessary** for electrical values in the ignition system? keyboard_arrow_down

100 V minimum is required as the ignition coil primary peak voltage, with the CKP sensor operating at 0.7 V minimum and the alternator exciter coil at 100 V minimum peak voltage specifications found in page 18-3.

Determine the **recommended** calibration settings for the fuel system idle speed. keyboard_arrow_down

1,400 ± 100 rpm (min⁻¹) is the specified idle speed setting, adjustable via the throttle stop screw after all other engine maintenance items have been completed and the engine reaches normal operating temperature.

What specifications are **calibrated** for the rear wheel suspension clearance measurements? keyboard_arrow_down

0.05 - 0.25 mm (0.002 - 0.010 in) represents the standard gear backlash specification, with a service limit of 0.40 mm (0.016 in) and a maximum backlash difference of 0.20 mm (0.008 in) referenced on page 16-3 of the technical specifications.

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Reviews (5)

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I had a question regarding my manual, and they responded within hours. Excellent customer service!
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This manual has been a lifesaver for my TRX250EX. The step-by-step instructions are clear and easy to follow! Highly recommend!
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I found this service manual to be extremely detailed and helpful. The troubleshooting guides made fixing issues a breeze.
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This manual covers everything you need for your Honda TRX250EX. The wiring diagrams are especially helpful!
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I received my download link almost instantly after purchase. The manual is well-organized and packed with useful information!