Positioning:
The FXSB Shovelhead represented Harley-Davidson's evolution into the chopper and custom cruiser segment, blending classic styling with modern (for the era) engineering.
Competitors:
Competed against custom motorcycle builders and other large displacement cruisers from American and European manufacturers, though Harley-Davidson held a unique cultural cachet.
Features:
Distinctive Softail frame design that mimics a hardtail look, powerful Shovelhead V-twin engine, often customized from the factory with chopper styling cues like extended front ends and ape hangers.
Engine Overhaul:
Complete disassembly, inspection, repair, and reassembly of Shovelhead engine components (carburetion, ignition, cooling, lubrication).
Transmission Service:
Detailed procedures for the 4-speed transmission, including clutch, primary drive, internal components, and lubrication.
Drivetrain Maintenance:
Belt drive system (rear) adjustment, inspection, and replacement.
Electrical System:
Wiring diagrams, troubleshooting for ignition, lighting, charging system (alternator, battery), starter, and accessories.
Braking System:
Front and rear brake system maintenance, bleeding, caliper service, master cylinder repair, and pad replacement.
Suspension Service:
Front fork (telescopic) and rear shock absorber maintenance, fluid changes, and component inspection.
Chassis And Frame:
Frame inspection, bolt torques, and steering head bearing service.
Fuel System:
Carburetor (likely Keihin Butterfly) overhaul, adjustment, and fuel tank/petcock service.
Exhaust System:
Exhaust pipe and muffler inspection and replacement.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, chain/belt adjustment, lubrication points.
Diagnostic Troubleshooting:
Step-by-step troubleshooting guides for common performance issues, electrical faults, and mechanical failures.
Component Rebuilds:
Detailed instructions for rebuilding major components like the engine, transmission, and brake calipers.
Wiring Diagrams:
Comprehensive and color-coded wiring schematics for all electrical systems.
Assembly And Disassembly:
Exploded views and detailed instructions for taking apart and reassembling the motorcycle.
Depth:
Full factory specifications, tolerances, torque values, and diagnostic procedures for expert-level repair and maintenance.
Engine Type:
Air-cooled, 45-degree V-twin OHV
Engine Family:
Shovelhead
Displacement:
74 cubic inches (1200cc) or 80 cubic inches (1340cc) depending on specific FXSB variant
Bore X Stroke:
80 ci: 3.500 in x 4.250 in (88.9 mm x 107.95 mm)
Compression Ratio:
Approx. 8.0:1 to 8.5:1 (varies)
Horsepower:
Approx. 65-70 HP (estimated)
Torque:
Approx. 80-85 ft-lbs (estimated)
Carburetor:
Keihin Butterfly (e.g., Keihin CV or earlier butterfly types)
Fuel Type:
Unleaded gasoline, 87 octane (minimum)
Fuel Capacity:
Approx. 3.5-4.0 gallons (varies by tank option)
Transmission Type:
4-speed constant mesh, manual foot shift
Clutch Type:
Wet, multi-plate
Primary Drive:
Duplex chain (pre-1985 models), belt drive (later models, though FXSB primarily chain)
Transmission Fluid:
Harley-Davidson Formula Plus or equivalent (e.g., SAE 20W-50 motorcycle oil in primary)
Safety Ratings:
Not applicable (motorcycle, no formal government crash ratings like cars)
Braking System Type:
Dual disc front, single disc rear hydraulic brakes
Lighting:
Halogen headlight, LED tail light and brake light, incandescent turn signals.
Frame Construction:
Steel, cradle frame design (Softail).
Initial Service:
First service typically around 500 miles (800 km) - includes oil change, filter, primary chain adjustment, and general inspection.
Regular Oil Change:
Every 2,500-3,000 miles (4,000-5,000 km) or annually, whichever comes first.
Primary Chain Adjustment:
Every 2,500-3,000 miles (4,000-5,000 km).
Spark Plug Replacement:
Every 5,000-7,000 miles (8,000-11,000 km).
Engine Oil:
SAE 20W-50 motorcycle specific oil (e.g., Harley-Davidson 20W-50).
Primary Chain Case Oil:
Harley-Davidson Formula Plus, SAE 20W-50 motorcycle oil, or a dedicated primary chain lubricant.
Transmission Oil:
Usually shared with the primary case on these models, but consult manual for specific split case or separate fill if applicable.
Brake Fluid:
DOT 4 hydraulic brake fluid.
Fork Oil:
Consult manual for specific weight and type, typically SAE 10W or 15W fork oil.
Shovelhead Wear:
Valve guide wear, oil leaks (common on older Shovelheads), and cam wear are potential issues.
Carburetor Tuning:
Requires regular adjustment and cleaning for optimal performance and starting.
Electrical Gremlins:
Ageing wiring can lead to intermittent issues; proper grounding and connections are crucial.
Belt Drive Tension:
Requires correct tension to prevent premature wear on belt and pulleys.
Heritage:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and cruiser/custom motorcycle heritage.
Fxsb Evolution:
The FXSB was introduced in 1983 as part of the new 'Softail' line, designed by Bill Davis and adopted by Harley-Davidson. It aimed to offer the look of a rigid frame with the comfort of suspension.
Production Period:
The Shovelhead engine itself was produced from 1966 to 1984, with the FXSB Softail variant being one of its final applications.
Manufacturing Location:
York, Pennsylvania, USA
Recognition:
The Shovelhead era is highly regarded by enthusiasts and collectors for its raw character and the introduction of the groundbreaking Softail platform.
Enthusiast Ratings:
Consistently rated as a desirable classic Harley-Davidson, offering a unique riding experience and iconic styling.
Certification:
Not applicable (motorcycle, factory manual).
