1985-1990 Harley-Davidson FX/Softail Models Service Manual

Wiring diagrams, specifications, and repair sequences for your 1985-1990 Harley-Davidson FX/Softail motorcycle. Includes part number 99482-90 for precise component identification and service.

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Document Details

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Document Number / Seller:
29345 / Donna Reyes
File Size:
117.88 MB
File Type:
PDF
Language:
English
Pages:
422
Printable:
Yes
Category:
Motorcycle
Last updated / verified
Dec 23, 2025

Models Covered & Key Technical Specifications

Harley-Davidson FX/Softail Models 1985–1990 Service Manual

FX/Softail Models (99482-90) | Factory Edition.

  • Certified Volume Data: 3 quarts signifies the total engine oil capacity for optimal lubrication.
  • Designated Charge Quantity: For optimal operation, 15 psi defines the minimum oil pressure at idle speed.
  • Defined End Play: 0.002-0.006 in. establishes the maximum allowable end play for the crankshaft bearings.
  • Key Mass Specs: 425 lbs represents the approximate dry weight of the motorcycle.
  • Primary Cooling Specs: Not applicable as this is an air-cooled engine.
  • Baseline Twist Specifications: 30-35 ft-lbs torque is the standard for critical fasteners on the banjo bolt.

Professional Workshop Service Manual & Technical Specifications

Harley-Davidson FX/Softail Models (1985-1990) Service Manual: Technical Guide

Product-Line: Motorcycle // Application-Range: 1985-1990 Harley-Davidson FX/Softail Models Logic // Engine-Type: V-Twin.

Document Overview Assessment-Element System-Path Architecture
Cover Initial Pages Front Cover Data
Introduction Foreword Service Manual Structure
Product Details Chassis Overall Specifications Table
Engine Specs Engine Technical Data Summary
Drive System Transmission Maintenance Intervals Chart

Featuring a modular arrangement of technical data, this manual provides comprehensive coverage for the 1985-1990 Harley-Davidson FX/Softail motorcycle series. It documents essential procedures and specifications for maintaining and servicing these iconic machines.

This manual covers general information, troubleshooting, and engine repair procedures for the Harley-Davidson V-Twin Evolution engine.

Diagnostic procedures are covered for engine running issues, including no-start conditions and excessive oil consumption.

Wiring diagrams are provided for the electrical system, assisting in diagnosing and repairing electrical faults.

Fuel system procedures are documented for carburetor adjustment and maintenance, ensuring optimal performance.

Adjustment procedures are detailed for various components, including brakes and clutch controls, to maintain proper function.

This manual includes torque specifications for critical fasteners to ensure proper corrosion joint prevention and structural integrity.

FAQ

What **tools** are designated for adjustment procedures? keyboard_arrow_down

Tools such as the HD-33443 Carburetor Idle Adjustment Tool and HD-33413 Tappet Guide Alignment Tool are listed for specific adjustment procedures.

Identify the **critical** pressure specifications for bleeding the hydraulic brake system. keyboard_arrow_down

30-35 ft-lbs torque is required when tightening copper washers on the banjo bolt during hydraulic brake system service.

What procedures are **required** for assembly sequence on page 361? keyboard_arrow_down

On page 361, the procedure involves aligning and seating the drive gear and housing components, followed by torquing specific bolts to specified values.

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Rated 5 out of 5 stars
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Had a minor issue with the download link, but customer service was incredibly helpful and resolved it in no time! Very satisfied with this purchase.
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This manual has been a game changer for my 1988 Softail. The detailed instructions made repairs so much easier!
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I was impressed with how thorough the manual is. The download process was smooth, and support responded quickly when I had questions. Highly recommend!
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