Positioning:
The Harley-Davidson FLHS 1980 represents the Electra Glide Standard, a touring motorcycle known for its classic styling and V-twin rumble. This manual targets owners and technicians responsible for maintaining and repairing these iconic machines.
Competitors:
During the 1980 model year, direct competitors would have been other large-displacement touring motorcycles from American and European manufacturers, though Harley-Davidson held a unique niche with its distinct V-twin character.
Vehicle Features:
The FLHS 1980 is characterized by its Shovelhead engine, a staple of Harley-Davidson's lineage, and its Electra Glide platform which provided a comfortable, stable ride for longer distances.
Value Proposition:
This comprehensive service manual is indispensable for preserving the performance, reliability, and authenticity of a 1980 Harley-Davidson FLHS, offering in-depth technical guidance unavailable elsewhere.
Primary Coverage:
Factory Authorized Service, Repair, and Maintenance
Secondary Coverage:
Troubleshooting, Diagnostics, Specifications, Wiring Diagrams
Estimated Pages:
Hundreds (Specific count not provided, but described as 'COMPLETE official full factory service repair manual')
Type:
Workshop Service Repair Manual
Engine:
Complete Shovelhead engine system, including disassembly, assembly, tuning, and troubleshooting of all components.
Transmission:
Four-speed constant mesh transmission, clutch, and primary drive system.
Electrical System:
Full wiring diagrams, ignition system, lighting, charging system (generator/alternator), starter motor, and accessories.
Fuel System:
Carburetor (likely a Keihin or S&S Super E/G), fuel delivery, fuel tank, and lines.
Chassis:
Frame, suspension (forks, rear shocks), wheels, tires, and steering.
Brakes:
Front and rear braking systems (likely disc brakes, possibly drum rear on some variants), hydraulic lines, and components.
Bodywork:
Fenders, fuel tank, seat, fairings (if applicable to FLHS), and instrumentation.
Maintenance:
Routine maintenance, lubrication, fluid changes, filter replacements, and general upkeep.
Repair:
Detailed step-by-step repair instructions for all major and minor mechanical and electrical components.
Troubleshooting:
Diagnostic procedures for identifying and resolving common and uncommon problems, with symptom-based guidance.
Rebuilds:
Complete engine and transmission rebuild procedures, including torque specifications and clearances.
Adjustments:
Carburetor tuning, ignition timing, clutch adjustment, and suspension settings.
Depth:
Comprehensive from basic owner maintenance to full engine and transmission overhauls, suitable for professional mechanics and experienced enthusiasts.
Engine Type:
Air-cooled, 45-degree V-twin OHV
Engine Family:
Shovelhead
Bore X Stroke In:
3.4375 x 4.25
Horsepower Est:
Approx. 65-70 HP (Varies by tuning)
Torque Est:
Approx. 75-80 ft-lbs @ 3200 RPM
Carburetor Type:
Single Carburetor (Likely Keihin Butterfly or S&S Super E/G)
Fuel Delivery:
Gravity Feed from Fuel Tank
Ignition Type:
Battery and Coil (Breaker-Point or Electronic Ignition depending on specific build/modification)
Oil Capacity Qt:
Approx. 4 quarts (including primary)
Oil Type:
API CD or SE service classification; SAE 20W50 recommended for most conditions.
Safety Standards:
Pre-dates modern motorcycle safety rating systems. Safety relies on rider skill and proper maintenance as detailed in the manual.
Braking:
Disc brakes front and rear (subject to variation) offer stopping power.
Lighting:
Headlight, taillight, brake light, and turn signals for visibility.
Frame Construction:
Steel frame providing structural integrity.
Wind Protection:
Potential for fairing (depending on exact FLHS configuration) offering rider wind protection.
Infotainment System:
Basic instrumentation: speedometer, odometer, fuel gauge, oil pressure light. No modern infotainment features.
Driver Assistance Systems:
N/A. Technology is mechanical and analog.
Connectivity Features:
N/A. Focus is on mechanical operation and rider control.
Oil Change Interval:
Recommended every 2,500 - 3,000 miles or annually, whichever comes first. Manual will specify exact interval.
Primary Chain Tension:
Check and adjust periodically as per manual recommendations, typically every 5,000 - 7,500 miles.
Spark Plug Replacement:
As recommended, often around 10,000-12,000 miles, but dependent on plug type and condition.
Engine Oil:
SAE 20W50 API CD or SE (refer to manual for specific approvals)
Primary Chaincase Oil:
Harley-Davidson Primary Chaincase Lubricant or equivalent heavy-duty gear oil (e.g., SAE 80W-90).
Brake Fluid:
DOT 3 or DOT 4 Brake Fluid (check manual for specific type).
Fork Oil:
Specific weight and quantity detailed in manual, often SAE 10W or 15W.
Oil Leaks:
Common on older Shovelheads due to aging gaskets and seals. Manual provides replacement procedures.
Carburetor Tuning:
Shovelhead carburetors can require frequent adjustment for optimal performance. Manual details tuning procedures.
Ignition System Reliability:
Breaker-point ignition systems can be prone to wear; electronic conversions are common. Manual covers both.
Primary Chain Tension:
Incorrect tension can lead to premature wear or chain failure. Manual details proper adjustment.
Heritage:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer with a rich history in producing V-twin motorcycles known for their durability and distinctive sound.
Shovelhead Era:
The Shovelhead engine, introduced in 1966, was a significant evolution for Harley-Davidson, powering their motorcycles through the late 1960s and 1970s into the early 1980s, including models like the FLHS.
Electra Glide Lineage:
The Electra Glide series has been Harley-Davidson's flagship touring platform for decades, evolving from its initial introduction to become the benchmark for American-style long-distance cruising.
Production Period:
The Shovelhead engine was produced until 1984, with the FLHS model being a part of Harley's lineup during this transitionary period.
Historical Acclaim:
While specific awards for the 1980 FLHS are not typically documented, the Shovelhead engine and Electra Glide platform are widely recognized as defining eras for Harley-Davidson and are considered classic, collectible motorcycles.
Owner Satisfaction:
Owner satisfaction is high among enthusiasts who appreciate the raw, mechanical nature and historical significance of the Shovelhead era.
Manual Certification:
Official Factory Service Repair Manual, indicating adherence to manufacturer standards for technical documentation.
