Era Significance:
The 1971 Super Glide represented a significant evolution for Harley-Davidson, blending performance with touring capabilities, and is a highly sought-after model for collectors and riders.
Competitors:
Competed against other American V-twins and emerging Japanese motorcycles offering different philosophies in performance and styling.
Design Philosophy:
A robust, air-cooled V-twin engine paired with a distinctive chassis, offering a classic American motorcycle experience.
Unique Selling Points:
Iconic Shovelhead engine, powerful torque delivery, authentic Harley-Davidson riding feel, customizable platform.
Comprehensive Coverage:
Engine, Transmission, Chassis, Electrical System, Bodywork, Troubleshooting
Estimated Page Count:
Approximately 300-400 pages (typical for comprehensive service manuals of this era)
Type:
Workshop Repair Service Manual
Engine:
Shovelhead V-Twin (disassembly, assembly, inspection, overhaul, tuning, carburetion, ignition)
Transmission:
4-speed Cruise Drive (overhaul, clutch, primary drive, maintenance)
Electrical System:
Ignition system (points, coil, condenser, timing), charging system (generator/alternator, regulator), lighting, starting system, wiring diagrams
Chassis And Suspension:
Frame, front fork (leading link or telescopic depending on exact FL variant), rear shocks, wheel bearings, steering head bearings
Brakes:
Front and rear brake systems (drum or disc depending on specific options), hydraulic components, cable adjustments
Fuel System:
Carburetor (e.g., Keihin, Linkert), fuel tank, fuel lines, fuel pump (if applicable)
Bodywork And Trim:
Fenders, fuel tank, seat, handlebars, controls, exhaust system
Maintenance:
Routine servicing, lubrication, oil changes, filter replacement, cable adjustments, battery care
Troubleshooting:
Diagnostic charts, symptom-based problem solving, common issues and solutions
Repair And Overhaul:
Detailed step-by-step instructions for engine rebuilds, transmission overhauls, suspension component replacement, brake system repairs
Assembly And Disassembly:
Complete breakdown and reassembly procedures for all major components
Depth:
Comprehensive, suitable for professional mechanics and experienced DIY enthusiasts. Includes detailed specifications, tolerances, and torque values.
Engine Type:
Air-cooled, 45-degree V-twin
Displacement Cc:
1207 cc (74 cubic inches)
Bore X Stroke In:
3.4375 in x 4.25 in (87.3 mm x 108.0 mm)
Compression Ratio:
Approx. 8.0:1
Valve Train:
OHV (Overhead Valve), two valves per cylinder
Ignition System:
Battery and Coil (Points Ignition), Distributor (later models might have electronic ignition) - Manual covers points system.
Horsepower Bhp:
Estimated 60-65 bhp (at the crankshaft, typical for the era)
Torque Lb-Ft:
Estimated 70-75 lb-ft (at the crankshaft)
Carburetor:
Typically a single Linkert or Keihin butterfly carburetor (e.g., Linkert M74, Keihin butterfly)
Fuel Type:
Unleaded gasoline (with appropriate octane rating for vintage engines, often 91+ octane recommended)
Oil System:
Dry Sump with Oil Tank (frame or frame downtube mounted)
Oil Capacity Qt:
Approx. 3-4 quarts (including oil tank)
Recommended Oil Type:
SAE 20W-50 Motorcycle Specific (conventional or blend recommended for vintage engines)
Type:
4-speed constant mesh, foot shift, hand clutch
Optional Gearbox:
N/A for 1971 Super Glide FL
Primary Drive:
Duplex chain drive from engine to transmission
Final Drive:
Belt drive (3" wide, 133 tooth)
Clutch Type:
Wet multi-plate
Transmission Fluid Capacity Pt:
Approx. 1 pint (17 oz)
Recommended Transmission Fluid:
Harley-Davidson Primary Chain Lubricant or equivalent SAE 70W gear oil
Safety Standards:
N/A (Vintage motorcycle, not subject to modern crash testing standards)
Brakes:
Drum brakes (front and rear) or optional front disc brake on some FL models. Manual details both systems.
Lighting:
Headlight, taillight, brake light, turn signals (depending on regional configuration).
Frame Construction:
Steel cradle frame designed for stability and rider comfort.
Infotainment System:
N/A (Vintage motorcycle, focuses on mechanical and electrical systems, not digital entertainment).
Driver Assistance Features:
N/A (Vintage motorcycle, no electronic driver assistance features).
Connectivity Features:
N/A (Vintage motorcycle, no electronic connectivity features).
Headlight Type:
Halogen or incandescent bulb, manually operated switches.
Oil Change Interval Miles:
Every 2,000-3,000 miles (or annually, whichever comes first), depending on usage and oil type.
Primary Chain Tensioner Check:
Check and adjust as needed every 1,000-2,000 miles.
Spark Plug Replacement Miles:
Approximately every 10,000 miles (check for wear and correct gap).
Points And Condenser Service:
Inspect and adjust ignition points every 2,000-4,000 miles; replace as needed. Manual provides precise gap and timing procedures.
Engine Oil Type:
SAE 20W-50 Motorcycle Oil (e.g., Harley-Davidson Classic Performance Oil or equivalent)
Transmission Oil Type:
SAE 70W Gear Oil or Harley-Davidson Primary Chain Lubricant
Fork Oil Type:
Specific weight fork oil, capacity will be detailed in the manual (typically around 10W).
Shovelhead Oil Leaks:
Common for Shovelhead engines to have minor oil seepage; manual provides guidance on sealing and gasket replacement.
Primary Chain Wear:
Primary chain and tensioner wear can lead to noise and performance issues; manual covers inspection and adjustment.
Carburetor Tuning:
Linkert or Keihin carburetors can require frequent adjustment for optimal performance, especially with fuel variations. Manual provides tuning procedures.
Ignition Timing:
Proper ignition timing is crucial for performance and engine health; manual details timing marks and adjustment for the points system.
Harley Davidson Legacy:
Founded in 1903, Harley-Davidson is an iconic American motorcycle manufacturer known for its V-twin engines, distinct styling, and robust build.
Super Glide Introduction:
The FX Super Glide was introduced in 1971, designed by Willie G. Davidson as a more stylish and performance-oriented variant of the existing FL models, featuring a fiberglass 'boat tail' rear fender and a different front end.
Shovelhead Engine Era:
The Shovelhead engine, introduced in 1966, replaced the Panhead and powered Harley-Davidson motorcycles through the 1970s and early 1980s, becoming a symbol of the era.
Production Period:
The Shovelhead engine was produced from 1966 to 1984. The 1971 Super Glide FL is part of this important lineage.
Manufacturing Location:
Milwaukee, Wisconsin, USA
Collectibility Status:
Highly collectible vintage motorcycle, appreciated for its historical significance and classic V-twin character.
User Ratings Historical:
Generally positive for its era, praised for power and styling by enthusiasts, with common maintenance needs acknowledged.
Certification Standards:
N/A (Vintage motorcycle, not certified by modern automotive standards).
