Bike Segment:
Custom cruiser motorcycle, known for its classic styling and V-twin rumble.
Target Audience:
Owners and mechanics specializing in vintage Harley-Davidson motorcycles, particularly those seeking to maintain or restore their FXSB models.
Era Competitors:
Other American V-twin cruisers, and some Japanese interpretations of the cruiser style from the era.
Bike Design:
The FXSB (also known as the 'Low Rider') was a popular model featuring a custom look, a comfortable riding position, and the iconic Shovelhead engine.
Manual Value:
Essential for preserving the originality and ensuring the reliable operation of a classic Harley-Davidson motorcycle.
Overall Coverage:
Comprehensive service, maintenance, and troubleshooting for the 1984 Harley-Davidson FXSB Shovelhead, covering all model variations.
Estimated Pages:
Likely 300-500 pages (typical for a full workshop manual of this era and scope).
Type:
Workshop Service Repair Manual
Powertrain:
Engine (Shovelhead V-Twin), transmission, clutch, final drive, fuel system (carburetion), ignition system.
Chassis:
Frame, suspension (forks and rear shocks), wheels, brakes (front and rear), steering.
Electrical:
Wiring diagrams, lighting, battery, charging system, starter, instruments, accessories.
Bodywork And Trim:
Fenders, fuel tank, seat, handlebars, controls, exhaust system.
Maintenance:
Routine inspections, lubrication, fluid changes, filter replacements, tune-ups.
Repair:
Engine rebuild, transmission overhaul, brake caliper servicing, electrical component replacement, suspension fork seal replacement.
Troubleshooting:
Diagnostic charts, symptom-based problem solving, identification of common failures.
Diagnostics:
Ignition timing adjustment, carburetor tuning and jetting, electrical circuit testing.
Depth:
In-depth technical information suitable for professional mechanics and experienced DIY enthusiasts, including detailed component disassembly and reassembly instructions, torque specifications, and diagnostic procedures.
Engine Type:
Air-cooled, 45-degree V-twin, OHV (Overhead Valve)
Engine Family:
Shovelhead
Displacement:
80 cubic inches (1340cc)
Bore X Stroke:
3.4375 in x 4.25 in (87.31 mm x 107.95 mm)
Compression Ratio:
Approximately 8.0:1 to 8.5:1 (varies slightly by model/tuning)
Horsepower:
Estimated 60-65 HP (at the crankshaft, depending on tuning)
Torque:
Estimated 70-75 ft-lbs (at the crankshaft, depending on tuning)
Carburetor:
Keihin Butterfly (e.g., CV Carburetor) or Linkert (less common by '84 but possible as replacement), typically 38mm or 40mm.
Fuel Type:
Unleaded gasoline, 87-91 octane recommended.
Ignition Type:
Breaker point ignition or early electronic ignition (e.g., points replacement modules).
Oil Type:
Varies; typically Harley-Davidson proprietary blend or a high-quality motorcycle-specific V-twin oil (e.g., SAE 20W-50 or 10W-40). The manual will specify exact Harley-Davidson part numbers or API classifications.
Transmission Type:
4-speed constant mesh, foot-shift, hand-clutch operation.
Clutch Type:
Wet multi-plate, diaphragm spring.
Gear Ratios:
Specific ratios are detailed within the manual, e.g., 1st: 2.44, 2nd: 1.71, 3rd: 1.29, 4th: 1.00 (typical values).
Transmission Oil:
Harley-Davidson primary chaincase lubricant or equivalent (e.g., Harley-Davidson SYN3 or a suitable V-twin transmission fluid).
Crash Safety:
Not applicable in the same manner as modern automobiles; emphasis is on rider protection and vehicle stability.
Braking System:
Front and rear disc brakes with hydraulic actuation. Dual piston caliper front, single piston caliper rear.
Lighting:
Headlight, tail light, brake light, turn signals, side marker lights (depending on market regulations).
Frame Construction:
Steel cradle frame designed for rigidity and rider confidence.
Oil Change:
Typically every 2,500-3,000 miles or annually. The manual will provide exact intervals.
Primary Chain Tension:
Check and adjust as needed, often at 1,000-2,000 mile intervals or when noise is detected.
Spark Plugs:
Inspect and clean/replace every 5,000-7,000 miles. The manual will specify the correct plug type and gap.
Engine Oil Capacity:
Approximately 3 quarts (2.8 L) for the Shovelhead 80 cubic inch engine. Manual confirmation required for exact capacity.
Transmission Oil Capacity:
Approximately 1 quart (0.95 L). Manual confirmation required.
Brake Fluid:
DOT 4 recommended for most Harley-Davidson models of this era, though DOT 3 may have been original. The manual will specify the precise type and bleeding procedures.
Shifter Lever Pivot:
Wear in the shifter lever pivot can lead to sloppy shifting; requires adjustment or replacement of the pivot pin.
Oil Leaks:
Common in Shovelhead engines due to age and gasket wear; primary chaincase seals, pushrod tube seals, and cylinder base gaskets are common culprits.
Carburetor Tuning:
Shovelhead carburetors can require frequent adjustments for optimal performance and smooth idling, especially with variations in altitude or temperature.
Ignition System Wear:
Breaker points require regular adjustment and replacement; electronic ignition conversions are popular upgrades.
Harley Davidson Legacy:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and cruiser motorcycles.
Fxsb Lineage:
The FXSB was introduced as part of Harley-Davidson's custom styling movement in the late 1970s and early 1980s, evolving from earlier FX models like the Super Glide. It was known for its lower profile and 'custom' look compared to more traditional touring models.
Shovelhead Era:
The Shovelhead engine was in production from 1966 to 1983, with the 1984 model year representing a transition period; however, the FXSB 'Shovelhead' designation refers to the continued use of this engine architecture in some models for this specific year, or it might denote a run of leftover 1983 engines designated for the 1984 model year production. The manual specifically covers the 1984 Shovelhead engine variant.
Manufacturing Location:
Milwaukee, Wisconsin, USA.
