1986-1987 Honda Fourtrax TRX70 Service Manual

Complete repair and maintenance documentation for the 1986-1987 Honda TRX70 Fourtrax ATV, covering all systems and components. Publication Part No. 61204-958-000.

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Document Details

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Document Number / Seller:
29202 / Susan Rodriguez
File Size:
21.87 MB
File Type:
PDF
Language:
English
Pages:
158
Printable:
Yes
Category:
ATV
Last updated / verified
Feb 26, 2025

Models Covered & Key Technical Specifications

1986-1987 Honda Fourtrax TRX70 Service Manual: Honda TRX70 Fourtrax ATV Repair Manual (1986-1987) Field-Reference

Honda TRX70 Fourtrax (1986-1987) Repair Manual | Series Engine Suite.

  • System Specifications: Standard bore x stroke of 47.0 x 41.4 mm defines the engine configuration.
  • Core Technical Data: For optimal operation, 72 cc displacement signifies the engine's primary volume.
  • Specific Power Metrics: Maximum horsepower reaches 3.75 BHP at 7,000 rpm.
  • Critical Torque Settings: The valve train signifies overhead camshaft chain driven configurations.
  • Universal Component Values: For cold climates, 15-30 C defines the ambient operational limit.
  • Technical Drive Ratios: The final reduction yields 2.769, with a drive sprocket of 13T.

Manual Description & Preview

Reference-Grade Configuration Overhaul Manual: ATV Honda TRX70 Fourtrax ATV Repair Manual (1986-1987) Field-Reference

Year-Coverage: 1986-1987 // Specification-Class: Core Components / Engine Logic // Year-Coverage: 1986-1987.

Assessment-Parameter Baseline Framework
Engine Oil Capacity 0.7 lit 0.8 lit
Valve Clearance 0.05 mm N/A
Primary Reduction 4.059:1 N/A
Spark Plug Gap 0.6-0.7mm N/A
Idle Speed 1,700 rpm N/A

Engineering chapters address: Engine lubrication, troubleshooting, and component specifications. Procedures for the clutch, gearshift linkage, and oil pump are detailed within. An introduction provides general safety and service rules. Specifications cover engine, frame, and electrical systems. Torque values for critical fasteners are outlined. This manual follows a methodical approach to documentation.

FAQ

Reference the **specified** tool requirements for valve adjustments? keyboard_arrow_down

07908-GE00000 is the tool number for the valve adjusting wrench set needed for precise valve clearance adjustments.

What are the **essential** electrical values for troubleshooting ignition issues? keyboard_arrow_down

Primary coil resistance for the ignition coil should be 0.1-0.2 Ω at 20°C (68°F) for correct operation.

Specify the **correct** calibration settings for the ignition timing on pages 148+ keyboard_arrow_down

Ignition timing is considered correct when the 'F' mark on the flywheel aligns with the index mark on the left crankcase cover at 1,700 ± 100 rpm.

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