Segment:
Full-size touring motorcycle with a sport-oriented touring focus.
Target Audience:
Owners and technicians of Harley-Davidson FLHS Electra Glide Sport models.
Competitors Era:
Honda Gold Wing, Yamaha Venture, Kawasaki Voyager.
Model Distinction:
The FLHS Electra Glide Sport offered a slightly more stripped-down, performance-oriented take on the traditional Electra Glide, often featuring a smaller fairing and lighter overall feel compared to the FLHT/FLHTC models.
Manual Value Proposition:
Provides essential knowledge for maintaining, repairing, and optimizing the performance and longevity of the FLHS model, empowering owners for DIY tasks and informed shop visits.
Engine Mechanical:
Engine assembly, disassembly, overhaul, top-end (cylinders, heads, valves), bottom-end (crankshaft, connecting rods, bearings), timing, oil pump, primary drive.
Fuel System:
Carburetor (Keihin CV 40), fuel tank, fuel lines, fuel pump (if applicable for EFI models, though FLHS typically carb'd), fuel filter.
Ignition System:
Ignition module, ignition coil, spark plugs, wiring, electronic timing.
Electrical System:
Charging system (alternator, regulator/rectifier), starting system (starter motor, solenoid), battery, lighting (headlight, taillight, turn signals), instrumentation, wiring diagrams, fuses, relays.
Transmission Drivetrain:
5-speed constant mesh gearbox (4-speed in earlier models but FLHS 88-93 is 5-speed), clutch operation and adjustment, primary drive chain, final drive belt inspection and adjustment.
Braking System:
Front and rear disc brakes, brake calipers, master cylinders, brake lines, brake fluid replacement, bleeding procedures.
Suspension Steering:
Front fork (telescopic), rear shock absorbers, swingarm, steering head bearings, wheel bearings, tire maintenance.
Chassis Frame:
Frame inspection, swingarm pivot, bodywork removal and installation (fairing, saddlebags, fenders), seat mounting.
Bodywork Trim:
Fairing components, saddlebag mounting, fenders, chrome trim, dash console.
Routine Maintenance:
Oil and filter changes, air filter cleaning/replacement, spark plug replacement, drive belt inspection and tensioning, chain adjustment (if applicable), brake fluid flush, lubrication points.
Troubleshooting:
Diagnostic procedures for common engine, electrical, and mechanical problems, fault finding charts.
Engine Rebuild:
Complete engine overhaul procedures, including cylinder head disassembly, piston and ring replacement, crankshaft and connecting rod service.
Transmission Service:
Gearbox disassembly, inspection of gears and shift forks, clutch plate replacement.
Electrical Diagnostics:
Wiring diagram interpretation, testing of charging system components, starter system, ignition system, and lighting circuits.
Brake Service:
Brake pad replacement, caliper overhaul, master cylinder replacement, brake line bleeding.
Suspension Overhaul:
Front fork seal replacement, fork oil change, rear shock absorber replacement.
Carburetor Tuning:
Carburetor adjustment, jetting, cleaning, and rebuilding procedures for the Keihin CV 40.
Depth Of Coverage:
Comprehensive, from basic maintenance to complete engine and transmission rebuilds.
Diagnostic Capability:
Includes detailed troubleshooting guides and symptom-based diagnostics.
Special Tools:
Lists required special tools for specific procedures.
Engine Family:
Harley-Davidson Evolution (Evo) Big-Twin
Engine Type:
Air-cooled, 45-degree V-twin
Displacement:
1337cc (81.7 cubic inches)
Bore X Stroke:
3.497 in. x 4.250 in. (88.8 mm x 108.0 mm)
Horsepower Est:
~50-55 hp @ 5000 rpm (approximate, depending on tuning and model year variations)
Torque Est:
~65-70 lb-ft @ 3000-3500 rpm (approximate)
Carburetor:
Keihin CV 40 (Constant Velocity)
Fuel Type:
Unleaded gasoline, 87 octane minimum recommended.
Oil Capacity:
3.0 US quarts (2.8 liters) with filter change.
Oil Type:
Harley-Davidson 20W-50 motorcycle oil or equivalent API SG or higher specification.
Oil Change Interval:
Every 2,500-3,000 miles or 6 months, whichever comes first.
Primary Chaincase Oil Change:
Every 5,000-10,000 miles (refer to manual for specific intervals).
Spark Plug Replacement:
Every 5,000-7,500 miles.
Drive Belt Inspection:
Inspect at every service, adjust tension as needed (typically every 5,000 miles).
Brake Fluid Flush:
Every 1-2 years.
Engine Oil Viscosity:
20W-50
Primary Chaincase Fluid Type:
Harley-Davidson Primary Chaincase Lubricant or SAE 85W-140 gear oil
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid
Fork Oil Viscosity:
Refer to manual, typically ~10W or lighter.
Common Wear Items:
Valve guides, cam followers (lifters), primary drive chain wear, starter clutch wear, carburetor diaphragm, wheel bearings, steering head bearings.
Electrical Concerns:
Aging wiring harnesses, regulator/rectifier failures, intermittent electrical connections.
Engine Vibrations:
While characteristic, excessive vibration can indicate worn motor mounts or internal engine issues.
Heritage Notes:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and touring motorcycles.
Electra Glide Lineage:
The Electra Glide line, introduced in 1965, represents Harley-Davidson's long-standing commitment to the full-size touring motorcycle segment. The FLHS 'Sport' variant offered a lighter, less-faired alternative for riders prioritizing performance within the touring category during this era.
Evolution Engine Introduction:
The Evolution engine, introduced in 1984 for Sportster models and 1984 for Big-Twins, marked a significant technological advancement over the Shovelhead and Panhead engines, offering improved reliability, performance, and emissions.
Production Period Covered:
1988-1993
