🏷️ Basic Information

Make:

Harley-Davidson

Model:

Super Glide FX

Year:

1976

Engine Code Family:

Shovelhead

Chassis Code:

FX

👋 Introduction

Historical Context:

The 1976 Super Glide FX represented Harley-Davidson's evolution of its Big Twin platform, offering a more versatile motorcycle suitable for both touring and custom building, competing against emerging Japanese and European motorcycles.

Competitors:

Competed with models from British brands (Triumph, Norton) and burgeoning Japanese manufacturers (Kawasaki, Yamaha, Honda) offering different performance and styling characteristics.

Model Attributes:

The FX Super Glide was known for its distinctive 'boat tail' rear fender (on some early versions), disc front brake introduction, and the powerful Shovelhead engine, offering a more relaxed riding posture than the FL models.

📋 Manual Details

Manual Type:

Factory Service Repair Manual

Language:

English

Format:

Printed (assumed from 'handy, easy to read reference book')

Estimated Page Count:

Typically 300-500 pages for this era of service manual

📖 Manual Coverage

Engine:

Complete disassembly, assembly, inspection, and repair of the Shovelhead engine, including top-end (cylinders, heads, valves) and bottom-end (crankcase, crankshaft, connecting rods).

Fuel System:

Carburetor (likely Linkert or early Keihin butterfly type) tuning, rebuilding, and troubleshooting; fuel tank, fuel lines, and fuel pump (if applicable).

Ignition System:

Ignition timing, points and condenser adjustment/replacement, coil testing, spark plug specifications, and troubleshooting of electrical ignition components.

Transmission:

4-speed constant mesh transmission disassembly, assembly, gear inspection, shifting mechanism adjustments, and fluid specifications.

Clutch:

Clutch assembly operation, adjustment, friction plate replacement, and hydraulic or cable actuation (depending on specific FX configuration).

Electrical System:

Wiring diagrams, charging system (generator or early alternator), lighting system (headlight, taillight, turn signals), battery maintenance, starter system, and switchgear.

Brakes:

Front and rear brake systems, including drum brake adjustment, shoe replacement, hydraulic system bleeding and fluid specifications (if disc brakes were introduced on this model).

Suspension:

Front fork (likely leading-axle telescopic) service, including oil changes and seal replacement. Rear shock absorber and swingarm service.

Frame And Bodywork:

Frame inspection, body panel removal and installation, fender mounting, and seat assembly.

Wheels And Tires:

Wheel bearing service, spoke tension adjustment (if applicable), tire pressure recommendations, and wheel balancing procedures.

Controls:

Handlebar, throttle controls, clutch and brake levers, and foot controls adjustment and maintenance.

Maintenance:

Regular scheduled maintenance tasks, including oil changes, filter replacement, lubrication points, and general inspection.

Troubleshooting:

Diagnostic charts and flowcharts for identifying common problems and their causes across all major systems.

Repair:

Step-by-step instructions for component repair and replacement, from minor adjustments to major overhauls.

Disassembly Assembly:

Detailed procedures for removing and reinstalling all major components and sub-assemblies.

Specifications Data:

Torque values, clearances, fluid capacities, and other critical technical data for proper repair and adjustment.

Depth Of Coverage:

Comprehensive, covering detailed rebuild procedures for all major mechanical and electrical components.

Diagnostic Capabilities:

In-depth troubleshooting guides for electrical and mechanical issues, enabling advanced diagnostics for DIY and professional mechanics.

📊 Manual Specifications

Digital Format Notes:

While described as a physical book, digital versions would ideally be searchable PDF with high-resolution scans of original pages.

Print Quality Expectation:

High-quality reproductions with clear text and legible diagrams, typical of factory service manuals.

Binding Type Expectation:

Durable binding suitable for workshop use, such as spiral-bound or case-bound to lay flat.

Paper Type Expectation:

Sturdy, often coated paper to withstand workshop environments and repeated use.

Manual Scope:

Comprehensive factory service and repair manual covering all aspects of the vehicle's maintenance, troubleshooting, and repair.

⚙️ Engine Specifications

Engine Type:

Air-cooled, 45-degree V-twin

Engine Displacement:

73.7 cubic inches (1208 cc) for the standard Shovelhead, though variations existed.

Bore X Stroke:

3.4375 in. x 4.00 in. (87.3 mm x 101.6 mm) for 74 cu. in. (1208cc) engine.

Compression Ratio:

Approximately 8.0:1 (varies with cylinder head and piston combinations)

Horsepower:

Estimated 60-65 HP at 5000-5500 RPM (manufacturer figures varied and were often conservative)

Torque:

Estimated 70-75 ft-lbs at 3500-4000 RPM

Carburetor:

Likely a Linkert M-series or early Keihin butterfly carburetor. Manual will detail specific model and jetting.

Fuel Capacity:

Typically 4.0 - 5.0 US gallons (15.1 - 18.9 liters) depending on fuel tank configuration.

Fuel Type:

Unleaded gasoline, 87 octane minimum recommended for stock compression ratios.

🔧 Transmission

Transmission Type:

4-speed constant mesh, foot-shift, hand-clutch (left side)

Optional Transmission:

None typically offered for the FX model of this year; 4-speed was standard.

Transmission Fluid Type:

Harley-Davidson recommends specific transmission oil (e.g., SAE 50 or 60, or later Harley-Davidson branded primary fluid). Manual will specify exact type and viscosity.

Clutch Type:

Dry multi-plate clutch, typically operated by a cable from the handlebar lever.

📐 Dimensions

Wheelbase:

Approximately 60.5 inches (1537 mm)

Length:

Approximately 87 inches (2210 mm) depending on handlebar and fender configuration.

Dry Weight:

Approximately 550-600 lbs (250-272 kg) depending on options and configuration.

🛡️ Safety Features

Safety Rating Context:

Motorcycle safety ratings were not standardized as they are for automobiles in this era. Focus is on mechanical integrity and roadworthiness.

Braking System:

Front disc brake (introduced on FX models around this time, usually a single disc) and rear drum brake. Manual will detail adjustment and maintenance.

Lighting:

Headlight, taillight, brake light, and likely turn signals. Manual covers bulb types and wiring.

💡 Technology Features

Infotainment Features:

No electronic infotainment systems were present in 1976. Technology focused on mechanical and electrical systems for operation.

Driver Assistance Features:

None. Focus on rider control and basic operational functions.

Connectivity Features:

None. This era predates any form of digital connectivity in motorcycles.

🔧 Maintenance

Oil Change Interval:

Typically every 1,000 to 2,000 miles (1600-3200 km), or as specified by the manual based on riding conditions.

Primary Chain Adjustment:

Required periodically, likely every 1,000-2,000 miles, depending on wear. Manual will detail specific procedure.

Spark Plug Replacement:

Recommended every 5,000-10,000 miles, or as part of routine tune-ups. Manual will specify correct plug type and gap.

Engine Oil Type:

Harley-Davidson recommends specific viscosities for their V-twin engines, typically SAE 20W-50 or SAE 50 motorcycle oil. Manual will confirm exact recommendation.

Transmission Oil Type:

As per transmission section, typically a heavier weight gear oil or specific primary lubricant. Manual will specify H-D part numbers or SAE ratings.

Brake Fluid Type:

If equipped with disc brakes, DOT 3 or DOT 4 hydraulic brake fluid would be typical. Manual will specify.

Fork Oil Type:

Specific viscosity fork oil (e.g., 10W or 15W) will be recommended. Manual will confirm capacity and type.

Sh Engine Wear:

Shovelhead engines can be prone to oil leaks from various seals and gaskets. Valve guide wear can also be an issue. Manual will guide on inspection and sealing.

Transmission Shifting:

Early 4-speed transmissions can develop issues with false neutrals or difficulty shifting if not properly maintained and adjusted. Manual covers adjustment procedures.

Electrical Gremlins:

Wiring from this era can be brittle and prone to corrosion or failure. Manual's wiring diagrams are crucial for troubleshooting.

📚 Vehicle History

Brand Legacy:

Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and long-standing tradition in motorcycling.

Fx Evolution:

The FX series was introduced as a more modern platform compared to the traditional FL (Electra Glide) models, offering a blend of styling and performance. The Super Glide FX combined elements from both Big Twin engines and frames, often featuring a sportier or custom aesthetic.

Production Period:

The Shovelhead engine was produced from 1966 to 1984. The FX designation has been used across various Harley-Davidson models and configurations over the decades.

🏆 Awards & Recognition

Historical Impact:

The Super Glide FX played a role in defining the custom and performance motorcycle segment for Harley-Davidson, influencing future designs and the broader motorcycle culture.

Industry Perception:

Highly regarded by enthusiasts for its classic styling and the raw power of the Shovelhead engine, considered a significant model in Harley-Davidson's history.