Positioning:
The FLSTF Fat Boy is a flagship model in Harley-Davidson's Softail lineup, known for its iconic styling, comfortable ride, and powerful V-twin engine, appealing to riders seeking classic cruiser aesthetics and a premium experience.
Competitors:
Competes with other large-displacement cruisers from brands like Indian Motorcycle, Victory Motorcycles (discontinued), and custom-builder offerings.
Styling:
Distinctive fat tire front and rear, chrome accents, large headlight, teardrop fuel tank, and sweeping handlebars contribute to its instantly recognizable 'Fat Boy' persona.
Engine Type:
Harley-Davidson's Twin Cam 103 engine, known for its torque and reliable performance.
Suspension:
Softail chassis with hidden rear suspension provides a hardtail look with modern comfort.
Covered Systems:
Engine, Drivetrain, Chassis, Electrical, Fuel System, Ignition System, Braking System, Suspension, Wheels and Tires, Bodywork, Maintenance, Troubleshooting, Diagnostics, Specifications.
Type:
Factory Service Manual / Repair Manual
Engine:
Detailed coverage of the Twin Cam 103 V-Twin engine, including assembly, disassembly, component identification, lubrication, cooling, and performance tuning.
Drivetrain:
Comprehensive information on the transmission (6-speed Cruise Drive), clutch, primary drive, and final drive (belt drive system).
Chassis:
Covers frame, suspension (front forks, rear shocks), steering, and wheel assembly.
Electrical:
Extensive coverage of the electrical system, including battery, charging system (stator, regulator/rectifier), ignition system, lighting, starter, and all wiring diagrams.
Fuel System:
Details on the Electronic Sequential Port Fuel Injection (ESPFI) system, fuel pump, fuel filter, and injectors.
Braking System:
In-depth coverage of front and rear brake systems, including caliper service, rotor replacement, brake fluid, and hydraulic lines.
Maintenance:
Includes routine maintenance procedures such as oil changes, filter replacements, spark plug service, brake fluid flushes, tire pressure checks, and lubrication schedules.
Troubleshooting:
Systematic troubleshooting guides for common issues, including diagnostic flowcharts and symptom-based solutions for engine, electrical, and mechanical problems.
Repair:
Step-by-step repair instructions for major components and systems, including engine overhauls, transmission rebuilds, suspension repairs, and electrical system diagnostics.
Diagnostics:
Coverage of diagnostic codes (DTCs), methods for reading and clearing codes, and component testing procedures using Harley-Davidson's diagnostic tools.
Depth:
Comprehensive and highly detailed, covering everything from basic rider maintenance to complete engine and transmission rebuilds. Suitable for professional technicians and advanced DIY mechanics.
Engine Family:
Twin Cam 103
Engine Type:
Air-cooled, 45-degree V-twin
Displacement:
103 cubic inches (1690cc)
Bore X Stroke:
3.875 in. x 4.380 in. (98.4 mm x 111.3 mm)
Torque:
Approx. 101 ft-lbs @ 3500 RPM (varies slightly by tuning)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Ignition:
High-performance, electronic ignition
Length:
93.3 in. (2370 mm)
Seat Height:
26.2 in. (665 mm) (unladen)
Ground Clearance:
5.1 in. (130 mm)
Dry Weight:
Approx. 708 lbs (321 kg)
Gross Vehicle Weight Rating:
Approx. 1160 lbs (526 kg)
Fuel Capacity:
5.0 gal (18.9 L)
Front Tire:
140/75 R17 67V
Rear Tire:
200/55 R17 78V
Wheel Type:
Cast aluminum, chrome-plated, solid disc wheels
Crash Testing:
Motorcycles are generally not subject to the same crash testing regimes as automobiles. Safety is primarily achieved through design, handling, and braking capabilities.
Braking:
Dual-piston front caliper with 300mm disc, single-piston rear caliper with 292mm disc. ABS (Anti-lock Braking System) was an optional feature for this model year.
Lighting:
Halogen headlight, LED taillight, and standard front/rear turn signals.
Frame Construction:
Steel frame and front fork designed for stability and predictable handling.
Audio System:
Factory audio systems were typically optional on this model, often consisting of a radio with AM/FM and auxiliary input for MP3 players. Speakers were often integrated into the fairing or nacelle.
Display:
Analog speedometer with integrated LCD display for odometer, trip meter, clock, and gear indication.
ABS:
Anti-lock Braking System (ABS) was an available option, enhancing braking safety.
Diagnostics:
On-board diagnostics system that can report trouble codes (DTCs) for troubleshooting engine and electrical issues.
Oil Change:
Every 5,000 miles or annually, whichever comes first.
Primary Chain Tensioner Check:
Inspect every 10,000 miles (hydraulic tensioner).
Spark Plugs:
Inspect/replace every 10,000 miles (typically Harley-Davidson recommended plugs).
Engine Oil:
Harley-Davidson 20W-50 SYN3 or equivalent (check manual for exact specifications and capacity, typically around 4 US quarts).
Primary Chain Case Oil:
Harley-Davidson Primary Chain Case Oil or equivalent (check manual for type and capacity, typically around 1 US quart).
Transmission Oil:
Harley-Davidson Formula+ Transmission & Primary Chaincase Lubricant or equivalent (check manual for type and capacity, typically around 20-24 US fl oz).
Brake Fluid:
DOT 4 compatible fluid (check manual for specific recommendations).
Cam Tensioners:
Early Twin Cam models (pre-2007) had issues with cam chain tensioner shoes wearing out. The 2013 Twin Cam 103 features an updated hydraulic tensioner system, which is generally more reliable but still requires periodic inspection.
Fuel Fitting Leaks:
Some owners have reported issues with fuel line quick-disconnect fittings causing minor leaks, which should be addressed promptly.
Clutch Actuation:
Hydraulic clutch systems can sometimes develop air bubbles or require adjustments, which are covered in the manual.
Heritage:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer with a rich history of producing V-twin motorcycles celebrated for their sound, performance, and lifestyle appeal.
Fat Boy Origins:
The original Harley-Davidson Fat Boy was introduced in 1990 and quickly became a cultural icon, notably featured in the film 'Terminator 2: Judgment Day'. The 2013 model represents an evolution of this classic design.
Manufacturing Location:
United States (primarily York, Pennsylvania and Milwaukee, Wisconsin)
