Positioning:
A crucial resource for owners and mechanics maintaining and restoring the iconic Harley-Davidson FXB Shovelhead, a significant model in the FX line.
Comparison:
Offers more comprehensive and accurate information than generic Haynes or Clymer manuals for this specific year and model, reflecting factory standards.
Features:
Official factory documentation ensures accuracy and completeness for all service and repair operations. PDF format allows for easy searching and selective printing.
Engine:
Detailed overhaul, troubleshooting, and tuning for the Shovelhead V-twin engine (including carburetor, ignition, lubrication).
Transmission:
Service, repair, and maintenance for the 4-speed constant mesh transmission.
Drivetrain:
Primary drive, chain drive, clutch, and final drive servicing.
Electrical:
Wiring diagrams, ignition system, lighting, battery, starter, and charging system diagnostics and repair.
Frame And Suspension:
Front fork (often the Girder or Springer style for FXB derivatives, though the FXB itself typically used a conventional fork), rear shock absorbers, swingarm, and chassis components.
Brakes:
Hydraulic disc brake system maintenance, repair, and bleeding (front and rear).
Fuel System:
Carburetor (likely a Keihin or Mikuni), fuel tank, petcock, and fuel lines.
Bodywork And Trim:
Fenders, fuel tank, seat, handlebars, and associated components.
Maintenance:
Scheduled maintenance, oil changes, filter replacement, lubrication, and routine inspections.
Troubleshooting:
Diagnostic flowcharts and systematic problem-solving for common and uncommon issues.
Repair:
Step-by-step instructions for component removal, disassembly, repair, assembly, and reinstallation.
Rebuilds:
Comprehensive guidance for engine, transmission, and other major component rebuilds.
Adjustments:
Carburetor tuning, ignition timing, clutch and brake lever adjustments, and suspension setup.
Depth:
In-depth, covering complete teardown, rebuild, and overhaul of all major mechanical and electrical systems.
Format:
PDF (Portable Document Format)
Quality:
High-resolution scans, suitable for printing. Expected to maintain legibility of diagrams and text.
Binding:
N/A (Downloadable PDF - user responsible for printing and binding)
Paper Type:
N/A (Downloadable PDF - user responsible for printing media selection)
Engine Type:
Air-cooled, 45-degree V-twin, OHV (Overhead Valve)
Displacement:
74 cubic inches (1200cc)
Bore X Stroke:
3.4375 in x 4.25 in (87.31 mm x 107.95 mm) (typical for 74ci)
Compression Ratio:
Approximately 8.0:1 (varies slightly by specific engine build)
Horsepower:
Approx. 60-65 HP (estimated, actual figures varied)
Torque:
Approx. 70-75 ft-lbs (estimated, actual figures varied)
Carburetor:
Keihin butterfly or butterfly-type carburetor (e.g., CV type likely introduced around this era, or earlier butterfly models).
Fuel Type:
Unleaded gasoline (minimum 87 octane recommended for stock compression ratios).
Ignition Type:
Mechanical Breaker Point ignition system or early electronic ignition systems.
Type:
4-speed constant mesh, foot-shifted, hand-clutched
Gear Ratios:
Specific ratios detailed in manual; typical for this era.
Clutch Type:
Dry multi-plate clutch
Transmission Fluid:
Specific Harley-Davidson approved transmission lubricant (e.g., primary chaincase oil or specific gear oil, consult manual for exact spec).
Safety Standards:
N/A (Motorcycles typically do not receive NHTSA ratings like cars; adherence to manufacturer safety specifications is paramount).
Braking System:
Front and rear hydraulic disc brakes.
Lighting:
Headlight, taillight, brake light, turn signals.
Oil Change Interval:
Typically every 2,000-3,000 miles or 6 months (refer to manual for precise intervals).
Primary Chaincase Oil Change:
Recommended at major service intervals or as specified in the manual.
Spark Plug Replacement:
Typically every 10,000-12,000 miles.
Brake Fluid Flush:
Recommended every 1-2 years to prevent moisture contamination.
Engine Oil:
Viscosity and type specified in manual (e.g., Harley-Davidson 20W50 or equivalent, or specific zinc-fortified oil for older engines).
Primary Chaincase Fluid:
Primary chaincase oil or Harley-Davidson transmission lubricant (check manual for specific type and capacity).
Brake Fluid:
DOT 4 hydraulic brake fluid (ensure compatibility with seals).
Oil Leaks:
Common with Shovelheads due to older gasket technology and potential wear; manual covers seal replacement.
Carburetor Tuning:
May require periodic adjustments for optimal performance and emissions; manual details tuning procedures.
Ignition System:
Breaker points can wear and require adjustment or replacement; electronic ignition conversions are common upgrades. Manual covers point system maintenance.
Transmission Noise:
Shovelhead transmissions are known for their characteristic mechanical noise; manual helps diagnose abnormal noises.
Electrical Connections:
Corrosion and loose connections can cause intermittent issues; manual provides wiring diagrams for troubleshooting.
Heritage:
Harley-Davidson, an American motorcycle manufacturer with a legacy dating back to 1903, renowned for its V-twin engines and cruiser motorcycles.
Evolution:
The FXB Sturgis (FXB designation) was part of the FX line, characterized by its disc wheels and often featuring the Shovelhead engine. The FXB model was a specific iteration, often associated with performance and custom styling for its era.
Production Era:
The Shovelhead engine itself was produced from 1966 to 1984. The FXB Sturgis was produced for a shorter period within this timeframe.
