Target Audience:
Harley-Davidson enthusiasts, owners, mechanics, and restoration specialists working on 1966 Electra Glide models.
Value Proposition:
Provides essential, in-depth technical information for maintaining and repairing a classic motorcycle, enabling DIY servicing and professional accuracy.
Comprehensiveness:
The term 'Full Service Repair Manual' implies a high degree of detail suitable for professional technicians and dedicated hobbyists.
Historical Accuracy:
Crucial for preserving and restoring the authenticity of a 1966 model.
Engine:
Detailed internal and external engine repair, tuning, and diagnostics for the Shovelhead engine.
Transmission:
Complete overhaul and repair procedures for the 4-speed transmission.
Electrical System:
Wiring diagrams, troubleshooting, component testing, and repair for lighting, ignition, and accessories.
Fuel System:
Carburetor (likely Linkert or early Keihin) tuning, rebuild, and maintenance, fuel tank and lines.
Brakes:
Front and rear brake system maintenance, repair, and adjustment (drum brakes typically).
Suspension:
Front fork (leading link or early telescoping) and rear shock absorber maintenance and adjustment.
Chassis And Frame:
Frame inspection, repair, and component mounting.
Bodywork And Fittings:
Fairing, saddlebags, seat, and other body component installation and repair.
Maintenance:
Routine servicing, lubrication, inspections, and adjustments.
Troubleshooting:
Diagnostic guides for common and uncommon operational issues.
Repair:
Step-by-step instructions for component disassembly, repair, and reassembly.
Rebuilds:
Comprehensive guides for engine and transmission rebuilds.
Depth:
Comprehensive, covering everything from basic adjustments to full engine and transmission overhauls, including electrical troubleshooting and chassis work.
Searchability:
Likely text-searchable if digitally scanned from an original manual.
Scan Quality:
Assumed high-quality scan for clarity of diagrams and text.
Binding Type Original:
Staple-bound or perfect bound (original format).
Paper Type Original:
Durable paper stock suitable for workshop environments.
Engine Type:
OHV (Overhead Valve) V-twin
Engine Name:
Shovelhead (introduction year for Shovelhead was 1966, though early models shared features with Panhead)
Displacement:
74 cubic inches (1213 cc)
Bore X Stroke:
3.4375 in x 4.25 in (87.3 mm x 108.0 mm)
Compression Ratio:
Approximately 8.0:1
Horsepower:
Estimated 55-60 hp (at crank)
Torque:
Estimated 75-80 ft-lbs (at crank)
Carburetor:
Harley-Davidson Linkert or early Keihin butterfly carburetor (specific model may vary, manual should detail it).
Fuel Type:
Unleaded gasoline (87 octane minimum recommenced, though original spec was leaded premium)
Ignition Type:
Battery and Coil with Points (Magneto ignition may be present on some earlier models or variants but 1966 is primarily battery ignition for Shovelhead).
Transmission Type:
4-speed constant mesh, manual foot shift with hand clutch
Clutch Type:
Dry multi-plate
Drive Type:
Chain drive (primary to transmission, belt drive to rear wheel)
Gear Ratios:
Specific ratios would be detailed in the manual, crucial for rebuilds.
Transmission Fluid Type:
Harley-Davidson recommended gear oil (e.g., SAE 50 or 60)
Transmission Fluid Capacity:
Approximately 1 quart (0.946 L)
Wheelbase:
Approx. 60.5 inches (1537 mm)
Overall Length:
Approx. 92 inches (2337 mm)
Dry Weight:
Approx. 670 lbs (304 kg)
Gross Vehicle Weight Rating:
Not typically specified for this era of motorcycles, but capacity for rider and luggage.
Safety Standard:
Motorcycle safety standards of the era, focusing on reliable mechanical operation.
Braking System:
Drum brakes front and rear (specify drum sizes and types in manual).
Lighting:
Headlight, tail light, brake light, turn signals (if equipped).
Oil Change Interval:
Typically every 1,500-2,000 miles or annually (refer to manual for specific Harley-Davidson recommendation).
Tune Up Interval:
Every 3,000-5,000 miles (includes points, spark plugs, carburetor adjustment).
Engine Oil Type:
Harley-Davidson recommends specific viscosity oils, often SAE 20W50 or SAE 50 for air-cooled V-twins of this era. Use of non-detergent oils was common.
Engine Oil Capacity:
Approximately 4 quarts (3.8 L)
Primary Chain Case Oil:
Specific Harley-Davidson primary lubricant or equivalent (e.g., SAE 50).
Primary Chain Case Oil Capacity:
Approximately 1 quart (0.946 L)
Engine Blow-By:
Early Shovelheads could experience oil blow-by due to worn valve guides or piston rings.
Carburetor Tuning:
Linkert carburetors can be finicky and require regular adjustment for optimal performance.
Electrical Reliability:
Older electrical systems, especially wiring insulation, can degrade over time, leading to intermittent issues.
Brake Performance:
Drum brakes of this era offer less stopping power than modern disc brakes; proper adjustment and maintenance are critical.
Heritage Statement:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its large-displacement V-twin engines and touring motorcycles.
Electra Glide Lineage:
The Electra Glide line began in 1965 as a successor to the Hydra-Glide, introducing the electric starter as standard. The 1966 model marks the introduction of the Shovelhead engine, a significant evolution.
Shovelhead Introduction:
The Shovelhead engine, named for its distinctive rocker box covers resembling shovels, replaced the Panhead engine and became a Harley-Davidson staple for two decades.
Manufacturing Location:
Milwaukee, Wisconsin, USA
Production Era:
1966 model year
