Positioning:
The FXS Low Rider was a significant model for Harley-Davidson in the early 1980s, representing a blend of custom styling and performance within the cruiser segment.
Competitors 1983:
Competed against other American V-twin cruisers and emerging Japanese heavyweight motorcycles.
Styling:
Distinctive Low Rider styling with swept-back handlebars, stepped seat, and often chrome accents.
Engine Type:
Air-cooled, 45-degree V-twin (Shovelhead)
Engine Mechanics:
Engine disassembly, assembly, timing, valve adjustments, carburetor tuning
Fuel System:
Carburetor (likely Keihin butterfly or Linkert), fuel tank, fuel lines, fuel pump
Ignition System:
Points ignition system, coil, spark plugs, wiring
Electrical System:
Wiring diagrams, lighting, battery, charging system (generator/alternator), starter motor
Transmission:
4-speed constant mesh transmission, clutch operation and adjustment, drive chain
Chassis And Suspension:
Front forks (likely dual-shocks), rear swingarm suspension, steering head bearings
Braking System:
Front disc brake, rear drum brake, hydraulic systems, brake fluid specifications
Wheels And Tires:
Wheel bearings, tire pressure, rim types
Frame And Bodywork:
Frame inspection, body panel removal and installation
Maintenance Procedures:
Oil changes, filter replacement, spark plug replacement, chain adjustment, brake adjustments, lubrication points
Troubleshooting Guides:
Diagnostic charts for common problems (starting issues, running problems, electrical faults)
Repair Procedures:
Detailed step-by-step instructions for component disassembly, repair, and reassembly
Diagnostic Procedures:
Methods for testing ignition system components, fuel delivery, and electrical circuits
Depth:
Comprehensive, covering routine maintenance to major overhauls and component rebuilds
Engine Configuration:
45-degree V-twin, air-cooled
Displacement Cc:
1340 cc (82 cubic inches)
Bore X Stroke Inches:
3.5 x 4.25 inches (approximate)
Compression Ratio:
Typically around 8.0:1 for this era
Horsepower Hp:
Estimated 65-70 HP (at crankshaft, peak figure)
Torque Lb Ft:
Estimated 75-80 lb-ft (at crankshaft, peak figure)
Carburetor Model:
Likely Keihin butterfly (CV) or potentially an earlier Linkert style, check manual for specifics.
Fuel Type:
Unleaded gasoline, octane rating typically 87 or higher
Ignition Type:
Mechanical breaker points and condenser
Oil Change Miles:
Typically every 2,000-3,000 miles or seasonally. Check manual for exact intervals.
Primary Chain Tension Check:
Regular checks, often at oil changes.
Ignition Timing Check:
Periodically, especially if running issues occur.
Engine Oil Type:
Viscosity typically 20W-50 motorcycle-specific oil. Check manual for exact API classification.
Primary Chain Case Oil:
Harley-Davidson Primary Chaincase Lubricant or equivalent (often heavier grade than engine oil).
Transmission Oil:
Typically Harley-Davidson Transmission Oil or a compatible heavy-duty gear oil. Check manual for viscosity (e.g., 75W-90, 80W-90).
Brake Fluid Type:
DOT 3 or DOT 4 (check manual for specific recommendation).
Shifter Lever Wear:
Wear on the shifter pawl and quadrant in the transmission can lead to shifting problems.
Carburetor Leaks:
Gaskets and seals on older carburetors can degrade, leading to fuel leaks.
Points Ignition Maintenance:
Points require periodic cleaning, gapping, and replacement of condensers for optimal performance.
Oil Leaks:
Common in Shovelhead engines due to aging gaskets, seals, and O-rings.
Brand Legacy:
Harley-Davidson, established 1903, synonymous with American V-twin motorcycles and a rich custom culture.
Fxs Lineage:
The FX frame (using Shovelhead engine) debuted in the 1970s, evolving through various models. The FXS Low Rider offered a distinct, factory-customized aesthetic.
Production Period:
Shovelhead engines were produced from 1966 to 1984. The FXS Low Rider model was produced during this era.
