Model:
Electra-Glide FL / FLH
Model Variant:
74 OHV Shovelhead
Model Years:
1966, 1967, 1968, 1969
Chassis Code:
FL (Standard), FLH (High Compression)
Engine Code Prefix:
66FL, 67FL, 68FL, 69FL for FL; 66FLH, 67FLH, 68FLH, 69FLH for FLH
Target Audience:
Harley-Davidson owners, independent repair shops, vintage motorcycle enthusiasts, and restorers
Competitor Manuals:
While aftermarket manuals exist, this 'official' factory service manual offers the most accurate and complete information directly from the manufacturer.
Authenticity:
Direct factory information ensures accuracy and completeness for maintenance and repairs.
Comprehensive Coverage:
Covers all aspects of the vehicle from routine checks to major overhauls.
Diagnostic Support:
Provides systematic troubleshooting guides essential for vintage machinery.
Print Flexibility:
Allows users to print only necessary sections, reducing paper waste and improving workshop usability.
Coverage Scope:
Complete factory service repair manual
Estimated Pages:
Hundreds (specific count not provided, but implies comprehensive coverage)
Type:
Factory Service Repair Manual (SRM)
Format:
Printable (full or partial pages)
Engine:
Shovelhead OHV V-Twin, including disassembly, inspection, assembly, tuning, and troubleshooting
Transmission:
4-speed constant mesh, including clutch, gearbox, primary drive, and final drive
Electrical System:
Ignition system (points, coil, condenser), lighting, charging system (generator/regulator), starting system, and wiring diagrams
Fuel System:
Carburetor (e.g., Linkert, Keihin), fuel tank, fuel lines, and fuel pump (if applicable)
Brakes:
Front and rear braking systems (drum brakes typical for this era)
Suspension:
Front fork (leading link or telescopic depending on exact sub-model), rear swingarm, shocks, and springs
Frame And Bodywork:
Frame components, mounting points, fenders, fuel tank, seat, handlebars, and controls
Wheels And Tires:
Spoked wheels, hub assembly, bearings, and tire fitment
Maintenance:
Routine maintenance, lubrication, filter changes, tune-ups, and pre-ride inspections
Repair:
Detailed step-by-step repair instructions for all major and minor components
Troubleshooting:
Diagnostic procedures for identifying and resolving common problems
Disassembly And Assembly:
Comprehensive guidance for complete component teardown and reassembly
Technical Specifications:
Torque values, clearances, measurements, and tolerances for all components
Wiring Diagrams:
Detailed electrical schematics for all model variations
Depth:
Complete rebuilds, complex diagnostics, and detailed component adjustments
Digital Format:
Likely PDF (if digital reproduction), optimized for printing. Original format would be printed.
Print Readability:
Designed for clarity of technical diagrams and text. High-resolution scans for digital reproduction expected.
Original Binding:
Stapled or bound paper manual (typical for factory service manuals).
Original Paper:
Durable paper stock suitable for workshop environments.
Engine Type:
Air-cooled, OHV (Overhead Valve), 45-degree V-Twin
Engine Displacement:
74 cubic inches (1200 cc)
Bore X Stroke:
3.4375 in. x 4.25 in. (87.3 mm x 108 mm)
Compression Ratio:
FL: Approximately 7.0:1; FLH: Approximately 8.0:1 (High Compression)
Horsepower:
Approx. 60-65 HP (highly dependent on specific tune and variant)
Torque:
Approx. 70-75 ft-lbs (highly dependent on specific tune and variant)
Carburetor Options:
Primarily Linkert (e.g., M74B, M74) or early Keihin butterfly type
Fuel Type:
Unleaded gasoline (modern fuel may require additives or adjustments)
Ignition Type:
Battery and Coil with Breaker Points and Mechanical Advance
Type:
4-speed, constant mesh, foot-shift, hand-clutch (left side)
Transmission Options:
Not applicable for this generation of FL/FLH, 4-speed was standard.
Primary Drive:
Duplex chain drive from crankshaft to transmission input shaft
Clutch Type:
Wet, multi-plate
Final Drive:
Belt drive (48-tooth rear pulley typically)
Transmission Oil Type:
API GL-4 75W-90 or 80W-90 gear oil recommended (check manual for specific Harley-Davidson grade)
Primary Chain Case Oil Type:
Harley-Davidson primary chain lubricant or equivalent (often a medium weight oil)
Wheelbase:
Approx. 60.5 inches (1537 mm)
Length:
Approx. 92.3 inches (2344 mm)
Dry Weight:
Approx. 640-670 lbs (290-304 kg)
Fuel Capacity:
Approx. 5 gallons (19 liters)
Front Tire Size:
3.50-18 (typical)
Rear Tire Size:
4.00-18 or 4.25-18 (typical)
Wheel Type:
Spoked wheels with chrome rims
Safety Ratings:
No formal crash safety ratings for motorcycles of this era; safety relies on rider skill and vehicle condition.
Braking System:
Dual-action drum brakes front and rear (operates both shoes with one lever/pedal pull)
Lighting System:
Headlight, taillight, brake light, turn signals (subject to regional variations)
Infotainment Features:
No modern infotainment systems; basic functionality includes analog gauges (speedometer, tachometer, oil pressure) and indicator lights.
Engine Control Unit:
Mechanical (points, condenser, mechanical advance) and carburetion, no electronic control unit (ECU).
Headlight Type:
Halogen or incandescent sealed beam unit
Oil Change Interval:
Every 2,000-3,000 miles or annually (refer to manual for exact mileage and conditions)
Primary Chain Adjustment:
Recommended every 5,000 miles or as needed
Spark Plug Replacement:
Typically every 6,000-10,000 miles (check manual for specific plug type and gap)
Brake Adjustment:
As needed, particularly for drum brakes which require periodic adjustment for proper function.
Engine Oil Type:
Viscosity grade recommended: 20W-50 or 60W (depending on climate and specific H-D recommendation for the era; check manual for precise specifications)
Engine Oil Capacity:
Approximately 3 quarts (2.8 liters)
Brake Fluid Type:
Drum brakes typically do not use hydraulic fluid; check if any models utilized a different braking system that required fluid.
Shaker Boxes:
Potential for oil leaks from rocker boxes due to aging gaskets and seals.
Carburetor Tuning:
Linkert carburetors can be finicky and require specific tuning for optimal performance, especially with modern fuel.
Electrical Reliability:
Older electrical components (generator, regulator, wiring) can be prone to failure and may benefit from inspection and potential upgrades.
Clutch Adjustment:
Clutch adjustment is critical for smooth engagement and preventing premature wear.
Carburetor Jetting:
Proper jetting is crucial for engine performance and longevity, particularly with changes in altitude or fuel quality.
Harley Davidson Legacy:
Harley-Davidson has a long-standing reputation for building robust, large-displacement V-twin motorcycles with a distinct American character.
Electra Glide Lineage:
The Electra-Glide, introduced in 1965, was Harley-Davidson's first production motorcycle with electric start, marking a significant shift towards rider comfort and convenience. The 'Shovelhead' engine, named for its distinctive rocker box shape resembling a shovel, debuted in 1966, replacing the Panhead engine.
Production Era Context:
This period saw Harley-Davidson facing increasing competition from Japanese manufacturers, leading to a focus on refining existing models and introducing new technologies.
Manufacturing Location:
Milwaukee, Wisconsin, USA
