1958-1959 Harley-Davidson Duo-Glide FL / FLH 74 OHV Repair Manual

1958-1959 Duo-Glide FL, Duo-Glide FLH 74 OHV repair manual documentation. Includes maintenance and repair information for the 74 OHV Duo-Glide models. PN 99482-59

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Document Details

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Document Number / Seller:
26901 / Carol Taylor
File Size:
13.29 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Motorcycle
Last updated / verified
Oct 27, 2025

Models Covered & Key Technical Specifications

Harley-Davidson Duo-Glide FL, Duo-Glide FLH 74 OHV (99482-59) Manual: 1958-1959 Advanced Guide Library | Dossier.

  • Design Power Framework: 55.0 HP establishes the base engine output Specifications.
  • Specific Temperature Range: For optimal operation, 15-30C defines the environmental limit Metrics.
  • Essential Power Rating: 450 W -- signifies the active printing consumption Parameters.
  • Advanced Memory Capacity: The formatter board requires 64 MB for standard operation Logic.
  • Core Speed Performance: Maximum throughput reaches 25 ppm Parameters.
  • Engine Specificatios: 1212.7 cc provides the displacement for the V2 engine Configuration.

Professional Workshop Service Manual & Technical Specifications

Harley-Davidson Duo-Glide FL / FLH 74 OHV Manual: 1958-1959 Documentation-Framework

Technical-Scope: 1958, 1959 Duo-Glide FL, FLH 74 OHV / Operational-Framework: Motorcycle / Engine Logic // Technical-Scope: English Language, 13.2854 MB File Size.

Integrated-Framework Technical-Path Context
Production Years 1958-1959 Manual Coverage
Engine Type V2, Four-Stroke, Panhead V-Twin Core Component
Horsepower 55.0 HP @ 4800 RPM Peak Output Performance
Torque 85.4 Nm @ 3200 RPM Rotational Force Measurement
Transmission 4-Speed Gear System
Cooling Air Cooled Thermal Management System

Repair data is categorized into

  • General: Covers basic specifications and troubleshooting.
  • Chassis: Details on wheels, brakes, and suspension systems.
  • Engine: In-depth information on the Panhead V-twin engine.
  • Transmission: Explains the 4-speed gearbox and clutch.
  • Electrical: Wiring diagrams, ignition, and charging systems.

This manual documents torque specifications for engine components to ensure proper axial load stability.

FAQ

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

Standard tools and specialized pullers are required, including a transmission sprocket wrench and a clutch hub wrench. Refer to Section 4A for specific tools needed for transmission and clutch adjustments.

Identify the **critical** pressure specifications. keyboard_arrow_down

30 to 35 pounds per square inch (PSI) at 20 MPH is the specified oil pressure range for proper engine lubrication. For higher speeds, up to 35-36 PSI is acceptable.

What procedures are **required** for the assembly sequence? keyboard_arrow_down

Assembly follows a reverse order of disassembly. Specific sequences are detailed within each section, such as torquing cylinder head bolts to 13-16 ft-lbs and ensuring proper alignment of crankcase components as outlined on page 89.

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Reviews (2)

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New
This claims to be a manual for 58-59 Harley DuoGlide. After paying and downloading, I find that it is for 1959 ONLY.
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Rated 5 out of 5 stars