Target Audience:
Harley-Davidson owners, independent repair shops, vintage motorcycle enthusiasts
Value Proposition:
Essential tool for maintaining, repairing, and troubleshooting the iconic Harley-Davidson FXB Shovelhead
Manual Type Comparison:
More comprehensive than owner's manuals, focused on technical repair over general use
Diagrams And Illustrations:
Detailed exploded views, wiring schematics, and service illustrations
Troubleshooting Methodology:
Systematic approach to diagnosing and resolving mechanical and electrical issues
Parts Reference:
Includes information for correct part identification and service procedures
Primary Coverage:
Complete Service, Maintenance, and Troubleshooting
Specific Models Covered:
All FXB Shovelhead models
Estimated Page Count:
Over 300 pages (typical for this era of service manual)
Manual Type:
Workshop Service Repair Manual
Engine Systems:
Engine disassembly, assembly, tuning, carburetor, ignition, lubrication, cooling (if applicable), exhaust
Transmission Systems:
Gearbox operation, maintenance, repair, clutch, primary drive
Chassis Systems:
Frame, suspension (front and rear), steering, wheels, tires, brakes (front and rear), controls
Electrical Systems:
Wiring diagrams, lighting, ignition system, battery, charging system, starter motor, accessories
Bodywork And Trim:
Body panels, fenders, fuel tank, seat, handlebars, controls mounting
Maintenance Procedures:
Oil changes, filter replacements, spark plug service, chain adjustment, brake fluid replacement, battery checks, lubrication points
Repair Procedures:
Engine rebuild, transmission overhaul, suspension fork rebuild, brake caliper service, electrical component replacement
Troubleshooting Guides:
Diagnostic charts for common problems, symptom-based troubleshooting
Specifications And Tolerances:
Torque specifications, clearances, fluid capacities, electrical resistance values
Diagnostic Capabilities:
Advanced diagnostic procedures, electrical testing, mechanical timing adjustments
Rebuild Guidance:
Comprehensive step-by-step instructions for complete engine and transmission overhauls
Diagnostic Charts:
Detailed symptom-to-cause and solution charts for rapid problem identification
Engine Family:
Shovelhead
Engine Configuration:
Air-cooled, 45-degree V-twin
Displacement:
80 cubic inches (1307 cc)
Bore X Stroke:
3.4375 in. x 4.25 in. (87.3 mm x 108 mm)
Compression Ratio:
Approx. 7.2:1 (varies slightly by sub-model/tuning)
Horsepower:
Estimated 65-70 HP at approx. 5000 RPM (stock)
Torque:
Estimated 75-80 ft-lbs at approx. 3000 RPM (stock)
Carburetor Type:
Keihin butterfly carburetor (e.g., Keihin 36mm CV or similar, depending on specific FXB variant)
Fuel Delivery:
Gravity feed from fuel tank
Ignition Type:
Battery and Coil (points ignition typically)
Oil Capacity:
Approx. 3 quarts (2.8 liters)
Oil Type Specification:
Harley-Davidson recommended oil (e.g., SAE 20W-50 or similar motorcycle-specific oil)
Transmission Type:
4-speed manual constant mesh
Primary Drive:
Duplex chain (clutch runs in primary oil)
Clutch Type:
Wet multi-plate, cable-operated
Gear Ratios:
Specific ratios detailed in manual (e.g., 1st: 2.44, 2nd: 1.57, 3rd: 1.16, 4th: 1.00)
Transmission Fluid Type:
Harley-Davidson recommended transmission lubricant (e.g., primary chaincase lubricant)
Wheelbase:
Approx. 62.5 inches (1587.5 mm)
Length:
Approx. 87.5 inches (2222.5 mm)
Dry Weight:
Approx. 575 lbs (261 kg)
Gross Vehicle Weight Rating Gvwr:
Not typically specified as a rigid number for this era of motorcycles, but implies safe operating load.
Crash Test Ratings:
N/A (Motorcycle safety is assessed differently than automobiles)
Braking System:
Front: Single disc brake; Rear: Disc brake
Tire Specifications:
Front: 3.50-19; Rear: 5.00-16 (Typical, check manual for exact sizing and load ratings)
Lighting:
Headlight, tail light, brake light, turn signals (standard)
Infotainment System:
N/A (This era of Harley-Davidson motorcycles did not feature electronic infotainment systems).
Driver Assistance Features:
N/A (No electronic driver assistance systems).
Connectivity Options:
N/A (No electronic connectivity features).
Oil Change Interval:
Every 2,000-3,000 miles or annually (check manual for precise recommendation)
Primary Chain Tension Check:
Check at every service, adjust as needed (typically every 5,000-10,000 miles depending on wear)
Spark Plug Replacement:
Every 5,000-7,500 miles
Brake Fluid Flush:
Every 1-2 years
Engine Oil Viscosity:
SAE 20W-50 (common recommendation, verify with manual)
Transmission Fluid Type:
Harley-Davidson Primary Chaincase Lubricant or equivalent
Fork Oil Viscosity:
Refer to manual for specific fork oil weight (e.g., 10W or 15W common)
Oil Leaks:
Common across Shovelheads due to older sealing technologies and engine design. Manual addresses gasket and seal replacement.
Carburetor Tuning:
Requires periodic adjustment and cleaning for optimal performance. Manual details tuning procedures.
Primary Chain Tensioner Wear:
The original stock tensioners could wear; manual covers inspection and replacement with updated designs.
Valve Adjustment:
Needs periodic adjustment for proper engine operation. Manual provides clearance specifications and procedure.
Manufacturer:
Harley-Davidson Motor Company
Shovelhead Introduction:
Introduced in 1966, replacing the Panhead engine.
Fx Series Designation:
FX designation historically referred to 'Factory Experimental' or 'cruiser' style models with a mix of Sportster and Big Twin components.
Fxb Specifics:
The FXB was an evolution of the FX frame, often featuring a more integrated styling and dual shocks at the rear.
Production Period Shovelhead:
1966-1983
Manufacturing Location:
Milwaukee, Wisconsin, USA (and York, Pennsylvania, USA)
Model Recognition:
Highly regarded for its classic styling and iconic V-twin rumble, a significant model in Harley-Davidson history.
Reliability Rating:
While mechanically robust, they require diligent maintenance. The manual is crucial for upkeep.
Manual Accuracy Certification:
This manual is designed to reflect factory service procedures and specifications.
