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Harley-davidson

Harley-Davidson Duo Glide 1964 Factory Service Repair Manual

Harley-Davidson Duo Glide 1964 Factory Service Repair Manual

$16.99
$16.99
Rea SlutsÄld
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Vehicle data plateRef 557943
Brand
Harley-davidson
Vehicle
Motorcycle
Models covered
Duo Glide, FL Models, Harley Davidson, Motorcycles
Years
1964
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

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đŸ·ïž Basic Information
Identification
Make:
Harley-Davidson
Model:
Duo Glide
Year:
1964
Generation
Model Generation:
Second Generation (FL Series)
👋 Introduction
Market Position
Historical Significance:
The 1964 Duo Glide represents a significant evolution in Harley-Davidson's FL line, featuring the iconic Duo-Glide suspension system, and serving as a bridge between the Panhead and the Shovelhead era. This manual is essential for preserving these classic motorcycles.
Competitive Analysis
Manual Value Proposition:
This factory service manual provides the most accurate and complete information for maintaining and repairing the 1964 Duo Glide, offering a crucial advantage over generic aftermarket guides in accuracy and detail.
Key Features
Diagnostic Focus:
Emphasizes systematic diagnostic procedures, enabling users to pinpoint issues efficiently rather than relying on guesswork.
Technical Accuracy:
Delivers manufacturer-verified technical data, torque specifications, tolerances, and OEM procedures.
📋 Manual Details
Coverage Areas
Primary Coverage:
Factory Service and Repair
Intended Audience:
Mechanics and DIY enthusiasts
Page Count
Estimated Pages:
Refer to specific product listing for exact page count. Typical factory service manuals of this era range from 300-600 pages.
Manual Type
Type:
Factory Service Repair Manual
Language
Language:
English
Format
Format:
Print (Paperback or Hardcover)
📖 Manual Coverage
Systems Covered
Engine:
Complete disassembly, assembly, inspection, and repair of the OHV V-twin engine (e.g., Panhead or early Shovelhead engine variants applicable to 1964 models).
Transmission:
Disassembly, assembly, adjustment, and repair of the 4-speed constant mesh transmission.
Clutch:
Service and adjustment of the clutch assembly.
Primary Drive:
Inspection and adjustment of the primary chain drive system.
Frame And Suspension:
Front fork (hydra-glide/duo-glide) disassembly, repair, and adjustment. Rear suspension servicing. Frame inspection and repair procedures.
Brakes:
Front and rear brake system inspection, adjustment, and repair (likely drum brakes for this era).
Electrical System:
Wiring diagrams, ignition system troubleshooting and repair (magneto or battery/coil), lighting system, starter system, generator/alternator (if applicable).
Fuel System:
Carburetor (e.g., Linkert) disassembly, cleaning, adjustment, and repair. Fuel tank and fuel line servicing.
Bodywork And Trim:
Fender removal and installation, seat servicing, fuel tank removal and installation, handlebar servicing.
Procedures Included
Routine Maintenance:
Oil changes, lubrication points and schedules, filter replacement, spark plug checks and replacement.
Tune Up Procedures:
Ignition timing, carburetor adjustment, valve clearance adjustment.
Troubleshooting Guides:
Systematic diagnostic procedures for common and uncommon issues.
Component Rebuilds:
Detailed step-by-step instructions for complete engine, transmission, and carburetor rebuilds.
Installation And Removal:
Procedures for removing and installing major components and sub-assemblies.
Adjustment Procedures:
Precise instructions for adjusting clutch, brakes, ignition timing, and other critical systems.
Technical Depth
Depth Of Coverage:
Comprehensive. Covers everything from basic maintenance and adjustments to complete engine and transmission rebuilds, including detailed specifications and tolerances.
📊 Manual Specifications
File Format
Digital Format Notes:
If sold as digital, typically PDF. Ensure clarity on searchability and image quality.
Print Quality
Print Quality:
Typically high quality, designed for workshop use. Includes clear diagrams and photographs.
Binding Type
Binding:
Often spiral-bound or sewn/glued binding for lay-flat use in a workshop environment.
Paper Type
Paper Quality:
Durable paper stock designed to withstand workshop conditions. May include coated pages for resistance to oil and grease.
⚙ Engine Specifications
Primary Engine
Engine Type:
Air-cooled, OHV (Overhead Valve), V-twin
Engine Designation:
Typically the Panhead engine (Evo Panhead) or very early Shovelhead designation may appear for 1964 models, check specific VIN range for exact engine.
Displacement:
Primarily 74 cubic inches (1200cc). Some models may have 80 cubic inches (1310cc) variants.
Performance
Horsepower Estimate:
Approx. 50-55 HP (varies by specific engine configuration and tuning).
Torque Estimate:
Approx. 65-70 ft-lbs (varies).
Fuel System
Carburetor:
Typically Linkert M-series carburetor (e.g., M74B, M74A).
Fuel Type:
Unleaded gasoline (higher octane recommended for vintage engines).
Ignition System
Ignition Type:
Battery and coil ignition system or Magneto ignition system depending on specific model variant.
Oil System
Oil Type:
ZDDP-rich motorcycle-specific oil (e.g., SAE 50 or 20W-50 vintage motorcycle oil).
Oil Capacity:
Approx. 4 quarts (3.8 liters) for engine oil, plus transmission and primary chain case oil.
🔧 Transmission
Standard
Transmission Type:
4-speed, constant mesh, manual foot shift with heel-and-toe clutch lever.
Optional
Transmission Options:
N/A - Standard 4-speed transmission was the norm for this model.
Features
Clutch Type:
Dry, multi-plate clutch.
Transmission Oil Type:
Harley-Davidson 4-speed transmission oil or equivalent.
📐 Dimensions
Exterior
Wheelbase:
Refer to specific model documentation for precise wheelbase. Typically around 60-63 inches.
Length:
Refer to specific model documentation. Typically around 90-95 inches.
Weights
Dry Weight:
Approximately 500-550 lbs (227-250 kg) depending on trim and accessories.
Gross Vehicle Weight Rating:
Not typically specified in the same manner as cars, but refers to safe operating weight.
đŸ›Ąïž Safety Features
Ratings
Safety Ratings:
Motorcycles of this era were not subjected to modern crash testing or rating systems.
Active Features
Braking System:
Drum brakes front and rear.
Lighting:
Headlight, taillight, brake light, turn signals (if equipped).
Passive Features
Frame Construction:
Steel tube frame.
Suspension Design:
Duo-Glide hydraulic suspension front and rear, offering improved ride comfort over previous models.
💡 Technology Features
Infotainment
Infotainment Systems:
N/A - Focus is on core mechanical and electrical systems. No modern infotainment.
Driver Assistance
Driver Assistance Features:
N/A - No electronic driver assistance features.
Connectivity
Connectivity Features:
N/A - No electronic connectivity features.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 1,000 to 2,000 miles (1600 to 3200 km) or annually, depending on usage.
Engine Tune Up Interval:
Recommended every 3,000 to 5,000 miles (4800 to 8000 km) or annually.
Transmission Service:
Transmission oil change recommended every 5,000 to 10,000 miles (8000 to 16000 km).
Fluid Specifications
Engine Oil Viscosity:
SAE 50 or SAE 20W-50 motorcycle specific oil with adequate ZDDP content.
Transmission Oil Specification:
Harley-Davidson 4-speed transmission oil or equivalent.
Primary Chain Case Oil:
Typically SAE 50 or SAE 20W-50 motorcycle specific oil.
Known Issues
Carburetor Issues:
Linkert carburetors can be prone to wear and require meticulous cleaning and adjustment for proper operation.
Oil Leaks:
Common across vintage motorcycles due to aging seals and gaskets.
Electrical Reliability:
Older wiring harnesses and components can degrade over time, leading to electrical gremlins. Proper insulation and connection maintenance are key.
Suspension Wear:
Duo-Glide suspension components (seals, bushings) can wear, affecting ride quality and handling.
📚 Vehicle History
Brand Heritage
Harley Davidson Legacy:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer known for its V-twin engines and distinctive styling. The FL series represents their flagship large displacement touring motorcycles.
Model Evolution
Fl Series Progression:
The Duo Glide is a direct descendant of the Hydra-Glide, introducing dual rear shocks and an improved front fork for enhanced ride quality. It preceded the Shovelhead engine adoption by a few years, though 1964 could be the transition year for some models.
Production
Production Era:
The Duo-Glide model line generally ran from 1958 to 1964, with the 1964 model being the final iteration before the introduction of the Shovelhead engine.
🏆 Awards & Recognition
Recognitions
Model Recognition:
The Harley-Davidson Duo Glide is widely recognized as a cornerstone of American motorcycle history, celebrated for its blend of power, comfort, and iconic styling.
Ratings
Vintage Motorcycle Appreciation:
Highly regarded by collectors and enthusiasts for its historical significance and classic V-twin performance.
Certifications
Manual Certification:
This is a Factory Service Manual, directly produced by the manufacturer or under their authority, implying the highest level of accuracy and completeness for its intended purpose.

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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