This comprehensive service repair manual for the 1959-1969 Harley Davidson Electra Glide and Duo-Glide motorcycles offers a detailed guide to maintenance and repair procedures. The manual covers a wide range of topics, including general specifications, lubrication and service procedures, troubleshooting, and detailed instructions for disassembling and reassembling various components.

It provides step-by-step instructions for servicing the engine, transmission, clutch, electrical system, brakes, wheels, and other essential parts. You'll find detailed information on topics such as:

**Engine:**
* Engine Specifications
* Engine Description
* Lubrication
* Servicing
* Oil Filter
* Engine Oiling and Breather System
* Engine Repair Procedure
* Stripping Motorcycle for Engine Repair
* Cylinder Head: Removing, Replacing Valve Guides, Replacing Valve Seats, Grinding Valves, Lapping Valves, Assembling, Adjusting Tappets
* Cylinder: Disassembling, Refinishing, Fitting Piston Rings, Connecting Rod Bushing, Straightening Connecting Rods, Assembling
* Gearcase: Oil Pump, Valve Tappets and Guides, Disassembling Timing Gears, Replacing Cover Bushings
* Crankcase: Disassembling, Disassembling Flywheels, Lapping Connecting Rods, Fitting Rod Bearing Races, Assembling Flywheels, Lapping Engine Main Bearing, Fitting Pinion Shaft Bearings, Fitting Sprocket Bearing, Assembling Crankcase
* Fuel System: Model HD Carburetor, Model M Carburetor, Model DC Carburetor, Model MD Carburetor, Fuel Strainer, Air Cleaner, Fuel Tank, Fuel Supply Valve

**Transmission:**
* Transmission Specifications
* Function of Transmission
* Stripping Motorcycle for Transmission Repair
* Clutch: Adjusting, Disassembling
* Starter: Disassembling Kick Starter, Disassembling Kick Starter Clutch
* Electric Starter: Starter Drive, Disassembling Electric Starter
* Gear Box: Adjusting Shifting Linkage, Adjusting Foot Shifter Cover, Replacing Main Drive Gear Oil Seal, Disassembling Shifter Cover, Disassembling Shifter Forks, Disassembling Gear Box

**Electrical System:**
* Wiring Diagrams
* Switches: Disassembling Ignition-Light Switch, Button Switch, Headlamp Dimmer and Horn Switch, Transmission Neutral Switch, Solenoid Switch
* Lamps: Removing Headlamp, Adjusting Headlamp Beam, Bulb Chart
* Generator (Standard): Testing Generator Output, Testing Field Coils, Testing Armature, Disassembling Generator
* Generator (Fan Cooled): Testing Generator Output, Testing Field Coils, Testing Armature, Disassembling Generator
* Circuit Breaker: Description, Adjusting Breaker Points, Adjusting Ignition, Disassembling Circuit Breaker
* Ignition Coil: Trouble Shooting, Replacing Cables
* Spark Plugs: Removing, Cleaning, Inspecting, and Repair, Adjusting Electrode Gap, Testing, Installing
* Regulator: Servicing, Testing Specifications
* Battery: Battery Care, Charging, Changing Electrolyte
* Horn: General Information, Disassembling, Adjusting
* Starter Motor: Locating Troubles, Removing Starter Motor and Drive, Delco-Remy Starter Motor Service, Presto Lite Starter Motor Service

**Chassis and Accessories:**
* Chassis: Basic Dimensions
* Forks: Changing Front Fork Oil, Disassembling Fork Slider, Adjusting Steering Damper, Adjusting Front Fork Trail, Disassembling Front Fork, Steering Head Bearings, Replacing Front Fork Slider Bushings, Straightening Front Fork, Rear Shock Absorbers, Rear Fork
* Brakes: Adjusting Front Brake, Disassembling Brakes, Adjusting Rear Brakes, Rear Brake Master Cylinder
* Seat: Seat Post
* Fiberglass: Surface Finishing, Touch-up and Surface Repairs, Patching Holes, Punctures and Breaks
* Tools
* Instruments: Servicing Tachometer

This manual is a valuable resource for owners, mechanics, and enthusiasts of these classic Harley Davidson motorcycles. It provides the detailed information needed to maintain and repair these iconic machines.

The 1959-1969 Harley-Davidson Electra Glide Duo-Glide motorcycle stands as a landmark in motorcycle history, marking a significant shift in the evolution of touring motorcycles. This iconic machine, born out of the need for long-distance comfort and practicality, introduced revolutionary features that would define Harley-Davidson's future and influence the entire industry. The Duo-Glide name itself reflects its groundbreaking innovation: a dual-suspension system, with a swingarm rear suspension and a front telescopic fork, a radical departure from the rigid frames that characterized previous motorcycles. This innovative setup provided a smoother, more comfortable ride, particularly over long distances, a critical factor in enticing riders to embark on extended journeys.

The Electra Glide, named for its electric starter, further revolutionized the touring experience by introducing convenience and ease of use. The electric starter, a first for Harley-Davidson, eliminated the need for laborious kick-starting, making motorcycle riding more accessible for a broader range of riders, particularly those seeking comfort and convenience. Moreover, the Electra Glide sported a distinctive "batwing" fairing, designed to shield the rider from wind and weather, further enhancing the comfort and practicality of long-distance riding. The Electra Glide Duo-Glide, with its blend of groundbreaking engineering and innovative features, became a symbol of freedom and adventure, captivating riders with its ability to conquer the open road with style and comfort. Its enduring legacy is evident in the countless enthusiasts who continue to appreciate and cherish these motorcycles, representing a golden era of motorcycle design and ingenuity.