Positioning:
The Harley-Davidson FXB Shovelhead was a significant model in the late 1970s and early 1980s, bridging the gap between the traditional Big Twin models and the evolving cruiser market. It represented a blend of classic Harley-Davidson styling with some of the company's emerging technologies.
Competitors:
Competed with other large-displacement V-twin cruisers from American and Japanese manufacturers, though Harley-Davidson maintained a unique brand identity and loyal customer base.
Design:
Iconic Harley-Davidson styling, the robust Shovelhead engine, comfortable riding position for cruising, and customization potential.
Engine:
Shovelhead 80 cubic inch (1340cc) Evolution V-Twin engine, top-end (cylinder heads, cylinders, pistons), bottom-end (crankshaft, connecting rods, bearings), lubrication system (oil pump, oil lines, oil filter), cooling system (air cooling), ignition system (points, ignition module, spark plugs, coils), fuel system (carburetor, fuel lines, fuel filter), exhaust system
Transmission:
4-speed constant mesh transmission, clutch (primary and secondary), shifter linkage, drive chain and sprockets
Chassis And Frame:
Frame construction, swingarm, fork (front suspension), rear shocks, steering head bearings, kickstand
Brakes:
Front and rear hydraulic disc brakes, master cylinders, calipers, brake lines, brake pads
Electrical:
Battery, charging system (generator/alternator), starter motor, lighting system (headlight, taillight, turn signals), wiring diagrams, switches, fuses, horn
Bodywork:
Fuel tank, fenders, seat, handlebars, instrument cluster, mirrors, foot controls
Maintenance:
Regular scheduled maintenance, oil changes, filter replacement, spark plug replacement, chain adjustment, brake fluid flush, lubrication points
Troubleshooting:
Diagnostic procedures for common issues, symptom-based troubleshooting guides
Repair:
Step-by-step repair instructions for all major components and systems, including engine rebuilds, transmission overhauls, brake system repairs, electrical diagnostics, and suspension servicing
Disassembly And Assembly:
Detailed instructions for the complete disassembly and reassembly of the motorcycle and its components
Depth:
Comprehensive. Covers from basic routine maintenance to full engine and transmission rebuilds, including detailed diagnostic procedures and specifications. Suitable for professional mechanics and advanced DIY enthusiasts.
Engine Type:
Air-cooled, 45-degree V-twin, OHV (Overhead Valve)
Displacement:
80 cubic inches (1340 cc)
Bore X Stroke:
3.4375 in x 4.25 in (87.3 mm x 108 mm)
Compression Ratio:
Approximately 8.0:1 (varies slightly by year/variant)
Carburetor:
Typically a Keihin butterfly or Linkert carburetor
Ignition:
Battery and Coil, Breaker Points ignition system
Horsepower:
Approximately 60-65 hp (estimated)
Torque:
Approximately 70-75 ft-lbs (estimated)
Fuel Type:
Unleaded gasoline, 87-91 octane (depending on year and local availability)
Fuel Capacity:
Typically 3.5 - 5 gallons (13.2 - 18.9 liters) depending on tank style
Transmission Type:
4-speed, constant mesh, sequential manual transmission
Optional Transmission:
N/A for this model year and platform
Clutch:
Wet, multi-plate, cable-actuated clutch
Drive Type:
Belt drive (primary) to transmission, Chain drive (secondary) to rear wheel
Gear Ratios:
Specific gear ratios are detailed within the manual but typically fall within standard Harley-Davidson 4-speed ratios for this era.
Length:
Approximately 90-95 inches (228-241 cm) depending on specific configuration.
Width:
Approximately 35-40 inches (89-102 cm) at handlebars.
Height:
Approximately 45-50 inches (114-127 cm) to top of handlebars.
Dry Weight:
Approximately 550-600 lbs (250-272 kg) depending on accessories.
Gross Vehicle Weight Rating:
Not typically specified in the same way as cars; rider and cargo weight limits are more relevant and detailed in the manual.
Cargo Capacity:
N/A (Motorcycle)
Crash Test Results:
N/A (Motorcycles are not subject to the same standardized crash testing as automobiles)
Braking System:
Dual front and rear hydraulic disc brakes
Lighting:
Headlight, taillight, brake light, turn signals
Frame Integrity:
Steel frame construction designed for stability
Rider Ergonomics:
Designed for rider comfort and control
Infotainment System:
N/A (Basic analog instrumentation)
Instrumentation:
Speedometer, tachometer (optional), odometer, oil pressure light, neutral indicator, turn signal indicators, high beam indicator.
Oil Change Interval:
Typically every 2,500-3,000 miles or 6 months, whichever comes first.
Primary Chain Adjustment:
Recommended to check and adjust every 5,000 miles.
Spark Plug Replacement:
Every 10,000-15,000 miles, or as needed based on condition.
Brake Fluid Flush:
Every 12-24 months, or as recommended by manual.
Engine Oil Type:
Harley-Davidson recommends specific V-twin motorcycle oils (e.g., SAE 20W-50 or 10W-40 depending on temperature). The manual will specify the exact type and API classification.
Engine Oil Capacity:
Approximately 4 quarts (3.8 liters) with filter change.
Primary Chain Case Oil:
Specific Harley-Davidson primary lubricant or compatible chain case oil.
Transmission Oil:
Harley-Davidson transmission lubricant or compatible gear oil.
Brake Fluid Type:
DOT 4 hydraulic brake fluid (non-silicone based)
Shifter Lever Issues:
Potential wear in shifter pawl and linkage, requiring adjustment or replacement.
Carburetor Tuning:
Carburetors of this era often require periodic tuning for optimal performance and idle.
Oil Leaks:
Common on older Shovelheads due to aging gaskets and seals, particularly around the primary and transmission covers.
Ignition System Maintenance:
Points and condenser require regular inspection and adjustment for proper timing.
Kickstand Pivot:
Can wear over time, leading to a loose kickstand.
Heritage:
Harley-Davidson boasts a rich heritage dating back to 1903, synonymous with American motorcycle culture, freedom, and customization.
Predecessors:
The FXB Shovelhead evolved from earlier Big Twin models, incorporating updates and design changes throughout the Shovelhead engine's production run (1966-1984).
Successors:
The Shovelhead engine was succeeded by the Evolution (or 'Evo') engine in 1984, marking a significant technological shift for the company.
Production Era:
The FXB designation specifically points to the 1984 model year, the final year for the Shovelhead engine in factory production.
Manufacturing Location:
Milwaukee, Wisconsin, USA
Market Recognition:
The Shovelhead engine is an iconic powerplant in Harley-Davidson's history, cherished by enthusiasts for its raw power and distinctive sound. The FXB model is a sought-after collector's item.
Reliability Reputation:
While known for character and performance, Shovelhead engines of this era require diligent maintenance to ensure reliability. The manual is essential for proper upkeep.
Certification Standards:
N/A (Motorcycles are not certified in the same manner as automobiles).
