🏷️ Basic Information

Make:

Harley-Davidson

Model:

Electra Glide

Model Variant:

Super Glide

Years Covered:

1970-1972

Product Identifier:

HDEPGSG7072SM

👋 Introduction

Historical Context:

The Electra Glide series, particularly the Super Glide, represented the pinnacle of Harley-Davidson's large-displacement touring motorcycles in the early 1970s. It was designed for long-distance comfort and performance, appealing to riders seeking a powerful and iconic American cruiser.

Competitors:

Competed against other large-displacement American and British motorcycles, but carved its niche with robust V-twin performance and iconic styling. Its primary competitors in spirit were models from Indian (though its market presence was diminishing), and potentially some high-performance British twins like Triumph Bonneville or Norton Commando for riders prioritizing outright speed, though the Electra Glide offered a different kind of touring capability.

Heritage Appeal:

Iconic styling that defined the 'bagger' aesthetic, often associated with police departments and long-haul touring riders.

Powertrain Emphasis:

Torquey V-twin engine providing characteristic Harley-Davidson rumble and reliable power delivery.

Touring Capability:

Designed for comfort with a large saddle, substantial front fairing (on some configurations), and integrated saddlebags for luggage.

📋 Manual Details

Engine Service:

Complete

Transmission Service:

Complete

Electrical System:

Complete

Frame And Bodywork:

Complete

Suspension And Steering:

Complete

Brakes:

Complete

Wheels And Tires:

Complete

Fuel System:

Complete

Exhaust System:

Complete

Clutch System:

Complete

Lighting System:

Complete

Troubleshooting Guides:

Included

Estimated Pages:

300-400

Type:

Factory Service Repair Workshop Manual

Language:

English

Format:

Downloadable PDF

📖 Manual Coverage

Engine Mechanical:

Detailed disassembly, assembly, inspection, and repair of all engine components, including cylinders, pistons, rings, connecting rods, crankshaft, camshaft, valves, and valve train.

Engine Management:

Carburetor adjustment, ignition system timing, spark plug specifications, and troubleshooting of common ignition faults.

Transmission Mechanical:

Complete coverage of the 4-speed constant mesh transmission, including clutch operation, gear engagement, shifting mechanism, and bearing services.

Electrical System Components:

Wiring diagrams, troubleshooting for charging system (generator/regulator), ignition system, lighting circuits, starter motor, horn, and instrumentation.

Frame And Suspension:

Fork lubrication and seal replacement, shock absorber specifications, steering head bearing adjustment, and frame inspection.

Braking System:

Drum brake inspection, adjustment, and relining procedures for both front and rear brakes. Master cylinder and brake line servicing.

Fuel And Exhaust:

Fuel tank removal and installation, fuel line routing, carburetor cleaning and rebuilding (e.g., Linkert or Keihin butterfly carburetors common for this era), exhaust pipe inspection and replacement.

Clutch System:

Clutch plate inspection, adjustment, and replacement procedures. Primary drive chain inspection and tensioning.

Routine Maintenance:

Oil changes, filter replacements (if applicable), lubrication points, spark plug replacement, air filter cleaning/replacement, brake adjustments, chain lubrication and adjustment.

Troubleshooting Diagnostics:

Systematic diagnostic procedures for common performance issues, starting problems, electrical faults, and mechanical noises.

Component Rebuilds:

Detailed step-by-step instructions for rebuilding the engine (top-end and bottom-end), transmission, carburetor, and other key components.

Alignment And Adjustment:

Carburetor synchronization (where applicable), ignition timing, clutch and brake lever free play adjustments, steering head bearing preload.

Wiring Diagrams:

Comprehensive color-coded wiring diagrams for all electrical circuits, aiding in diagnosis and repair.

Depth:

Comprehensive factory-level detail suitable for professional technicians and experienced DIY mechanics. Covers everything from basic tune-ups to complete engine and transmission rebuilds.

📊 Manual Specifications

Format:

PDF

Searchable Text:

Yes

Printable:

Yes

Quality:

High-resolution scans of original factory documentation

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Air-cooled, OHV (Overhead Valve), V-twin

Displacement:

74 cu in (1213 cc)

Bore X Stroke:

3.4375 in x 4.25 in (87.3 mm x 108 mm)

Compression Ratio:

8.0:1 (typical for FLH models of this era)

Valve Train:

Pushrod actuated, two valves per cylinder

Engine Oil Capacity:

4 US quarts (3.8 liters) for 74ci, with filter

Carburetor:

Linkert M-Series (e.g., M-38 or M-40) or early Keihin butterfly carburetors, depending on specific production date and market.

Horsepower Estimated:

Approximately 55-60 HP @ 5000 RPM

Torque Estimated:

Approximately 80-85 ft-lbs @ 3000 RPM

Fuel Type:

Unleaded gasoline, 87-91 octane recommended (though leaded fuel was common then, manual will specify correct use for the period).

🔧 Transmission

Transmission Type:

4-speed, constant mesh, foot-shifted

Primary Drive:

Duplex chain

Final Drive:

Belt drive (rear)

Clutch:

Dry multi-plate clutch, operated by hand lever

Gear Ratios:

Specific ratios vary, but typically First: ~2.44:1, Second: ~1.82:1, Third: ~1.35:1, Fourth: 1.00:1 (These are approximate and should be verified in the manual).

Fluid Type:

Primary/Transmission: SAE 50 or SAE 60 gear oil (e.g., Harley-Davidson's own formulation or equivalent like Spectro, Valvoline).

Fluid Capacity:

Approximately 1 US pint (0.47 liters) for the transmission.

📐 Dimensions

Wheelbase:

Approximately 60.5 inches (1537 mm)

Length:

Approximately 90.5 inches (2299 mm)

Width:

Approximately 34.5 inches (876 mm)

Height:

Approximately 54 inches (1372 mm) (to top of windshield/fairing)

Dry Weight:

Approximately 650-700 lbs (295-318 kg)

Gvwr:

Not typically specified in the same way as modern vehicles, but refers to the maximum loaded weight the chassis and suspension can handle.

Fuel Tank Capacity:

5 US gallons (18.9 liters)

Front Tire Size:

3.50 x 19

Rear Tire Size:

4.00 x 18

Wheel Type:

Spoked wheels, typically chrome steel rims.

Wheel Bolt Pattern:

N/A (Rear wheel is hub-mounted, front uses axle nuts)

🛡️ Safety Features

Crash Test Results:

N/A (Motorcycles of this era were not subjected to standardized crash testing as is common for automobiles today.)

Braking System Type:

Front and Rear Drum Brakes. No ABS, no power assist.

Lighting:

Headlight, taillight, brake light, turn signals (may vary by market/trim).

Frame Construction:

Steel cradle frame, providing structural integrity.

Suspension Design:

Telescopic front forks, dual rear shock absorbers, designed for rider comfort over distance.

💡 Technology Features

Features:

N/A (This era of motorcycle predates integrated infotainment systems. The primary 'information' is delivered via analog gauges like speedometer and ammeter/voltmeter.)

Features:

N/A (No electronic rider aids or driver assistance features are present.)

Features:

N/A (No Bluetooth, USB, or other modern connectivity features.)

Headlight Type:

Incandescent Halogen (typically 55/60W)

🔧 Maintenance

Oil Change Interval:

Every 2,000-3,000 miles (or annually, whichever comes first). Refer to manual for precise intervals and conditions.

Primary Chain Tension:

Check and adjust every 1,000 miles or as needed.

Spark Plug Replacement:

Recommended every 5,000-7,000 miles. Check gap before installation.

Brake Adjustment:

Inspect and adjust drum brakes regularly, especially after significant mileage or brake component replacement.

Wheel Bearing Service:

Lubricate and inspect wheel bearings periodically, often at 10,000-mile intervals or if noise is detected.

Engine Oil:

Harley-Davidson SAE 20W-50 or equivalent high-quality motorcycle oil meeting API SG or higher standards. For this era, a mineral-based oil is generally preferred. Some manuals may specify a straight-weight oil for certain conditions.

Transmission Oil:

SAE 50 or SAE 60 Gear Oil. Avoid synthetic gear oils unless specifically rated for vintage transmissions to prevent seal damage.

Primary Chain Case Oil:

Harley-Davidson Primary Chaincase Lubricant or equivalent SAE 70W gear oil (this oil is shared with the transmission and clutch).

Brake Fluid:

N/A (Drum brakes do not use hydraulic fluid).

Fork Oil:

Specific weight of fork oil (e.g., 10W or 15W) and capacity per fork leg will be detailed in the manual.

Carburetor Leaks:

Linkert carburetors can be prone to fuel leaks if not properly maintained or rebuilt. Diaphragm issues in later models.

Ignition Timing:

Maintaining precise ignition timing is crucial for performance and can be sensitive to wear in points and condenser (if applicable).

Primary Chain Wear:

The primary chain and compensator sprocket can wear, leading to slack and potential noise or damage if not addressed.

Electrical Connector Corrosion:

Older wiring can suffer from corrosion at connections, leading to intermittent electrical faults.

Drum Brake Adjustment:

Drum brakes require frequent adjustment due to lining wear and cable stretch.

Shovelhead Oil Leaks:

Shovelhead engines, like many air-cooled V-twins of the era, are known for minor oil seepage, especially around the pushrod tubes and base gaskets.

📚 Vehicle History

Founding Principles:

Harley-Davidson, founded in 1903, built its reputation on robust V-twin engines and durable, powerful motorcycles designed for work and recreation.

Motorcycle Icons:

The brand is synonymous with American motorcycling culture, characterized by its distinctive styling and sound.

Electra Glide Introduction:

The Electra Glide lineage began in 1965 with the introduction of the electric starter, a revolutionary feature for Harley-Davidson. The 'Super Glide' designation often implied a more performance-oriented or touring-focused model within the Electra Glide family, often featuring the larger 74ci (Shovelhead) engine and substantial fairing/luggage options.

1970S Era Design:

This period saw the evolution from the Panhead engine to the Shovelhead engine, which powered these models. The styling was functional and rugged, reflecting the era's focus on touring capability and durability.

Manufacturing Location:

Milwaukee, Wisconsin, USA

Production Period:

1970-1972 models represent a specific iteration of the Shovelhead-powered Electra Glide series.

🏆 Awards & Recognition

Status Icon:

The Electra Glide Super Glide of this era is considered an iconic American motorcycle, celebrated for its contribution to the touring motorcycle segment and its lasting impact on motorcycle design and culture. While not winning formal 'awards' in the modern sense, it achieved significant market success and sustained a devoted following.