Heritage:
The FXST Softail represents a significant era for Harley-Davidson, introducing the innovative Softail frame with concealed rear shocks, mimicking the rigid frame look while providing modern ride comfort. It was positioned as a premium cruiser and a symbol of American motorcycling.
Competitors:
Competed with other American V-twin cruisers and custom-styled motorcycles from brands like Indian (though less prominent in this era) and Japanese manufacturers offering larger displacement cruiser models.
Styling:
Classic Harley-Davidson styling with a low-slung profile, teardrop fuel tank, wide handlebars, and often custom-like detailing. The 'Softail' name refers to the hidden rear shock absorbers.
Powertrain:
Powered by the robust Harley-Davidson Evolution (or 'Evo') engine, known for its torque and reliability.
Engine:
Complete overhaul, inspection, troubleshooting, disassembly, assembly of Evolution 1340cc (80ci) V-twin engine, including cylinders, pistons, crankshaft, camshafts, valve train, ignition, lubrication, and cooling systems.
Transmission:
Service and repair of the 4-speed constant mesh transmission, including clutch, primary drive, gear sets, shift mechanism, and lubrication.
Chassis And Suspension:
Front fork (Showa/Marzocchi variants), rear swingarm, shock absorbers, wheel bearings, steering head bearings, and frame inspection.
Brakes:
Front and rear brake system diagnosis, caliper service, master cylinder rebuild, hydraulic lines, and pad replacement.
Electrical System:
Wiring diagrams, battery, charging system (stator, regulator/rectifier), ignition system (points/electronic), lighting, horn, starter motor, and accessory circuits.
Fuel System:
Carburetor service (e.g., Keihin Butterfly), fuel tank, fuel lines, and fuel pump (if applicable).
Bodywork And Trim:
Fender removal and installation, fuel tank mounting, seat, handlebars, and cosmetic component service.
Maintenance:
Regular service schedules, oil changes, filter replacements, spark plug service, chain adjustment (if applicable), brake fluid replacement, and general lubrication.
Troubleshooting:
Diagnostic procedures for common and uncommon faults across all major systems, including no-start conditions, engine performance issues, and electrical gremlins.
Repair:
Detailed step-by-step repair procedures for engine components, transmission, brakes, electrical systems, and chassis components.
Rebuilds:
Comprehensive instructions for complete engine and transmission rebuilds, including torque specifications and critical clearances.
Diagnostics:
Systematic diagnostic trees and flowcharts for identifying root causes of malfunctions.
Depth:
Extensive; covers everything from basic owner maintenance to complete engine teardowns and rebuilds, including advanced electrical troubleshooting.
Compatibility:
Compatible with all PDF readers (Adobe Acrobat Reader, etc.) on Windows, macOS, Linux, and mobile devices.
Quality:
High-resolution scans, clear text, and legible diagrams for easy printing and viewing.
Binding For Download:
N/A (Digital PDF)
Paper For Download:
N/A (Digital PDF)
Text Search:
Searchable text for quick information retrieval of specific terms, parts, or procedures.
Engine Type:
Air-cooled, 45-degree V-twin
Displacement:
1339 cc (81.8 cubic inches)
Bore X Stroke:
3.50 in x 4.25 in (88.9 mm x 107.95 mm)
Compression Ratio:
8.3:1 (typical)
Valve Train:
Overhead valve (OHV), 2 valves per cylinder
Horsepower:
Approx. 60-65 hp @ 5000 rpm (estimated, varies by year/tuning)
Torque:
Approx. 67-70 ft-lbs @ 2500-3000 rpm (estimated, varies by year/tuning)
Carburetor:
Keihin Butterfly CV (Constant Velocity) carburetor, typically 40mm (e.g., Keihin CV40)
Fuel Type:
Unleaded gasoline, 87-91 octane recommended
System Type:
Early models: Battery coil with points. Later models: Electronic Ignition (breakerless).
Type:
Dry-sump with oil tank separate from crankcase.
Type:
4-speed, constant mesh, helical gear
Clutch:
Multi-plate, wet, diaphragm spring type
Primary Drive:
Duplex chain drive to clutch basket
Optional Transmissions:
N/A for this model range; 4-speed was standard.
Final Drive:
Belt drive (typically 132-tooth belt)
Transmission Fluid:
Harley-Davidson recommended transmission lubricant or equivalent SAE 80W-90 gear oil (refer to specific manual chapter for exact spec).
Wheelbase:
Approx. 63.5 inches (1613 mm)
Length:
Approx. 90-94 inches (2286-2388 mm)
Height:
Approx. 48-50 inches (1219-1270 mm)
Seat Height:
Approx. 27-28 inches (686-711 mm)
Dry Weight:
Approx. 550-600 lbs (250-272 kg)
Gross Vehicle Weight Rating Gvwr:
Approx. 960 lbs (435 kg)
Fuel Capacity:
Approx. 3.5 - 4.0 gallons (13.2 - 15.1 liters)
Oil Capacity Engine And Primary:
Approx. 4 US quarts (3.8 liters) including oil tank (refer to manual for exact capacity and fill procedure).
Front Wheel:
16-inch (spoked or cast)
Rear Wheel:
16-inch (spoked or cast)
Front Tire Size:
Typically 100/90-16
Rear Tire Size:
Typically 130/90-16 or 140/90-16
System Features:
This era of Harley-Davidson motorcycles primarily focused on mechanical function and rider experience. Infotainment systems in the modern sense (integrated audio, navigation) were not standard features. Aftermarket audio systems were common.
Features:
No electronic driver assistance systems (e.g., ABS, traction control) were available on the FXST Softail during this period.
Features:
No integrated connectivity features. Communication with the motorcycle is purely mechanical and electrical.
Headlight:
Halogen headlight (e.g., H4 bulb, 55/60W typically). Specific wattage and type may vary by year.
Initial Service:
First service typically at 1,000 miles (1600 km): includes engine oil and filter change, primary chaincase oil change, inspection of all fasteners, brake system check, and adjustments.
Routine Maintenance:
Every 2,500-5,000 miles (4,000-8,000 km) or annually: engine oil and filter change, primary chaincase oil change, inspection of spark plugs, air filter cleaning/replacement, drive belt inspection, brake check, and lubrication of pivot points.
Major Service:
Every 10,000-15,000 miles (16,000-24,000 km): includes valve adjustments, ignition timing check, carburetor synchronization, and more thorough inspections.
Engine Oil:
Harley-Davidson 20W50 motorcycle oil or equivalent SAE 20W50 API SG or higher (refer to manual for specific API rating). Capacity: Approx. 3 US quarts (2.8 liters) for oil change.
Primary Chaincase Oil:
Harley-Davidson Primary Chaincase Lubricant or equivalent SAE 85W-140 gear oil (refer to manual for exact spec). Capacity: Approx. 1 US quart (0.95 liters).
Transmission Oil:
Harley-Davidson Transmission Lubricant or equivalent SAE 80W-90 gear oil. Capacity: Approx. 1 US quart (0.95 liters).
Brake Fluid:
DOT 4 hydraulic brake fluid (refer to manual for specific type and replacement interval).
Evo Engine Minor:
Potential for oil leaks from pushrod tubes and rocker box gaskets; wear on valve guides; cam bearing wear over high mileage.
Transmission Shifting:
Occasional false neutrals, especially between 4th and 5th gear (though this is a 4-speed, so typically 3rd to 4th or hard downshifts); worn shift forks or drum.
Carburetor Performance:
Keihin CV carburetor can be sensitive to vacuum leaks or require fine-tuning of jetting/needle for altitude or modifications.
Electrical Charging:
Stator or voltage regulator failure can lead to charging system issues; original wiring harnesses can become brittle.
Suspension Wear:
Fork seals can leak; rear shock absorbers may lose damping over time.
Oil Filter Early:
Typical part number range: 63731-57T, 63796-77T (cross-reference with manual is essential)
Founding:
Harley-Davidson Motor Company, founded in Milwaukee, Wisconsin, in 1903, is one of the most iconic American motorcycle manufacturers.
Softail Introduction:
The Softail platform was introduced in 1983 for the 1984 model year, revolutionizing the look of Harley-Davidson cruisers by hiding the rear suspension.
Fxst Development:
The FXST (often referred to as the 'Standard' Softail) was a key model in this new platform, embodying the classic chopper and custom styling trends of the era.
Production Period:
The FXST Softail model line, as covered by this manual, ran from the 1984 model year through 1990, receiving minor updates and variations within this period.
Manufacturing Location:
Milwaukee, Wisconsin, USA (and potentially York, Pennsylvania for certain components/assembly).
