Positioning:
Essential diagnostic and repair resource for owners and technicians of the 1981 Harley-Davidson FXSB Shovelhead, a classic cruiser.
Value Proposition:
Provides the same level of detail and accuracy as the original factory manual, enabling comprehensive maintenance and repair that preserves the motorcycle's originality and performance.
Feature 1:
Authoritative, factory-sourced information.
Feature 2:
Detailed troubleshooting and diagnostic procedures.
Feature 3:
Clear, step-by-step repair instructions.
Feature 4:
Comprehensive electrical diagrams and specifications.
Engine:
Shovelhead 80 cubic inch (1340cc) V-twin, including top end, bottom end, lubrication, cooling, ignition, and fuel systems.
Transmission:
4-speed manual gearbox, clutch assembly, primary drive, and related components.
Chassis:
Frame, suspension (front forks and rear shocks), steering, wheels, and tires.
Brakes:
Front and rear brake systems, including hydraulic components and brake pad replacement.
Electrical:
Wiring diagrams, lighting, ignition system, charging system, battery, starter, and all electrical components.
Bodywork:
Fuel tank, fenders, seat, handlebars, and associated trim.
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, and general upkeep procedures.
Diagnostics:
Troubleshooting guides, symptom analysis, and diagnostic flowcharts for common issues.
Repair:
Step-by-step instructions for disassembly, repair, and reassembly of all major components.
Overhaul:
Detailed procedures for engine and transmission overhauls.
Specifications:
Torque specifications, clearances, tolerances, and critical measurements for all parts.
Depth:
Comprehensive, covering everything from basic adjustments to complete engine rebuilds. Suitable for professional mechanics and experienced DIY enthusiasts.
Quality:
High-resolution PDF, allowing for clear printing of all pages and diagrams.
Printability:
Designed for printing the entire manual or selected sections with excellent legibility.
Binding:
N/A (Digital PDF download)
Paper:
N/A (Digital PDF download)
Engine Type:
Air-cooled, 45-degree V-twin
Displacement:
80 cubic inches (1340cc)
Bore X Stroke:
3.4375 in x 4.25 in (87.3 mm x 108.0 mm)
Compression Ratio:
8.2:1 (typical)
Horsepower:
Approx. 60-65 HP (at crankshaft, estimated for model year)
Torque:
Approx. 70-75 ft-lbs (at crankshaft, estimated for model year)
Carburetor:
Keihin butterfly carburetor (e.g., Keihin 36mm CV or S&S Super E/G, depending on original specification and market)
Fuel Type:
Unleaded gasoline (minimum 87 octane recommended)
Ignition Type:
Battery and coil electronic ignition (or points ignition, depending on build date and variant)
Wheelbase:
Approx. 62.5 inches (1588 mm)
Length:
Approx. 91.5 inches (2324 mm)
Dry Weight:
Approx. 575 lbs (261 kg)
Gross Vehicle Weight Rating Gvwr:
Not specified, consult original documentation
Safety Standards:
N/A (Motorcycle safety standards vary by region and time of manufacture; manual focuses on repair and maintenance).
Braking System:
Hydraulic disc brakes front and rear.
Lighting:
Headlight, taillight, turn signals, brake light.
Oil Change Engine:
Every 2,500-3,000 miles or annually, whichever comes first (consult manual for precise interval).
Transmission Primary Chaincase Service:
Every 5,000-10,000 miles (consult manual for precise interval).
Spark Plug Replacement:
Refer to manual, typically every 10,000-15,000 miles.
Engine Oil Type:
Viscosity grades such as 20W-50 or 10W-40 (consult manual for specific recommendations for temperature range). Use oils designed for V-twin motorcycles.
Transmission Primary Fluid:
Harley-Davidson Formula+ or equivalent SAE 50 motorcycle transmission oil.
Brake Fluid Type:
DOT 4 hydraulic brake fluid (for models equipped with hydraulic brakes).
Oil Leaks:
Common in older Shovelheads due to aging gaskets and seals. Manual provides procedures for seal replacement.
Carburetor Tuning:
May require periodic adjustment for optimal performance and emissions. Manual details tuning procedures.
Valve Adjustment:
Shovelheads require regular valve lash adjustments. Manual covers correct procedures and specifications.
Electrical Reliability:
Older wiring can degrade; manual provides detailed wiring diagrams for troubleshooting and repair.
Heritage:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and distinctive styling.
Shovelhead Era:
The Shovelhead engine, introduced in 1966, replaced the Panhead and was produced until 1984. It was known for its distinctive rocker box design.
Fxsb Model:
The FXSB 'Bad Boy' or 'Sturgis' model was introduced in 1980 as a sportier, more stripped-down cruiser variant of the Shovelhead line, featuring a low-slung profile and often custom-style wheels.
Production Years Fxsb:
1980-1982 (Shovelhead engine variants)
Manufacturing Location:
York, Pennsylvania, USA
Collectible Status:
Highly collectible as part of the Shovelhead era, representing a significant period in Harley-Davidson history.
Restoration Value:
The manual is crucial for authentic restoration and maintenance, preserving the value and character of the motorcycle.
Manual Certification:
Factory Original (replicated in PDF format)
