Market Segment:
Cruiser motorcycle, iconic American styling, premium segment.
Competitors:
Indian Chief, Victory Kingpin, other large-displacement American V-twin cruisers.
Styling:
Distinctive wide front fork, chrome accents, teardrop fuel tank, whitewall tires (often standard or common option).
Engine:
Harley-Davidson's renowned Twin Cam engine architecture.
Riding Experience:
Comfortable cruising, strong low-end torque, classic V-twin rumble.
Engine:
Twin Cam 103B (99.6 cu in / 1633 cc) engine, including disassembly, inspection, assembly, and troubleshooting of all internal and external components.
Fuel System:
Electronic Sequential Port Fuel Injection (ESPFI), fuel pump, injectors, fuel lines, fuel tank, and evaporative emissions control system.
Ignition System:
Ignition module, spark plugs, ignition coils, and related wiring.
Transmission:
6-speed Cruise Drive transmission, including clutch, gearbox, final drive, and primary drive components.
Electrical System:
Battery, charging system (alternator, regulator), starter, lighting system (headlight, taillight, turn signals), instrumentation, horn, and accessory circuits.
Braking System:
Front and rear hydraulic disc brakes, brake calipers, master cylinders, brake lines, and ABS components (if equipped).
Suspension:
Front fork (telescopic) and rear shock absorber systems, including fork seals, oil, and spring replacement.
Frame And Body:
Frame inspection and repair, fenders, fuel tank, seat, handlebars, controls, and body panel removal/installation.
Wheel And Tires:
Wheel bearing service, tire mounting and balancing, and wheel specifications.
Diagnostics:
Troubleshooting guides for common issues, diagnostic trouble codes (DTCs) and their meanings.
Maintenance:
Oil changes, filter replacements, brake fluid flushes, chain/belt adjustment, and general lubrication.
Repair:
Complete engine rebuild, transmission overhaul, brake system repair, electrical component replacement, and suspension overhaul.
Troubleshooting:
Systematic diagnostic procedures for identifying and rectifying malfunctions.
Installation:
Guidance on installing genuine Harley-Davidson accessories and replacement parts.
Depth:
Comprehensive, covering all aspects from routine maintenance to complete engine and transmission rebuilds, including detailed torque specifications and diagnostic procedures.
File Format:
PDF (Portable Document Format)
Print Quality:
High resolution, suitable for clear printing of all diagrams and text.
Binding Type:
N/A (Digital download, user printable)
Paper Type:
N/A (Digital download, user printable)
Engine Type:
Air-cooled, Twin Cam 103B V-twin
Displacement:
99.6 cu in (1633 cc)
Bore X Stroke:
3.875 in x 4.380 in (98.4 mm x 111.3 mm)
Valve Train:
Overhead valve (OHV), 4 valves per cylinder (2 per head), pushrod actuated.
Horsepower:
Approx. 76 HP @ 5500 RPM (Manufacturer claimed, actual may vary based on tuning and specific dyno tests)
Torque:
Approx. 97 ft-lbs @ 3500 RPM (Manufacturer claimed, actual may vary based on tuning and specific dyno tests)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded gasoline, minimum 91 octane (R+M)/2
Oil Type:
Harley-Davidson SYN3 (Synthetic) SAE 20W-50 or equivalent V-twin specific synthetic oil.
Oil Capacity:
Approx. 4.0 US quarts (3.8 L) with filter change.
Transmission Type:
6-speed Cruise Drive
Clutch Type:
Hydraulic, multi-plate wet clutch
Final Drive:
Carbon reinforced belt, 1.125" width
Primary Drive:
Chain drive, 34/46 ratio
Gear Ratios:
1st: 9.317, 2nd: 6.452, 3rd: 4.793, 4th: 3.827, 5th: 3.227, 6th: 2.790
Transmission Oil Type:
Harley-Davidson Formula + (Transmission & Primary Chaincase Lubricant) or equivalent.
Transmission Oil Capacity:
Approx. 2.75 US quarts (2.6 L)
Crash Test Ratings:
Motorcycles are not subject to the same standardized crash testing as automobiles; safety is assessed through design and compliance with relevant regulations.
Brakes:
Dual-action, four-piston front caliper with dual 32mm and 34mm pistons, and a right-rear, four-piston caliper with 32mm pistons. Optional Anti-lock Braking System (ABS).
Lighting:
Halogen headlamp, LED taillight, and self-canceling turn signals.
Chassis Design:
Steel frame and swingarm designed for stability.
Tire Construction:
Tubeless tires for improved safety in case of punctures.
Audio System:
While many Fat Boys were sold without integrated infotainment, many owners opt for aftermarket audio systems. The manual will cover basic electrical routing for accessories.
ABS:
Optional Anti-lock Braking System (ABS) available on select 2011 FLSTF models. Manual details its operation and service.
Vehicle Diagnostics:
On-board diagnostics via the digital display, providing access to system status and trouble codes. The manual provides detailed interpretation.
Initial Service:
1,000 miles (1,600 km) or 6 months, whichever comes first.
Subsequent Service:
Every 5,000 miles (8,000 km) or 12 months, whichever comes first.
Engine Oil And Filter Change:
Every 5,000 miles (8,000 km) or 12 months.
Transmission And Primary Chaincase Oil Change:
Every 10,000 miles (16,000 km) or 24 months.
Engine Oil Specification:
Harley-Davidson SYN3 (Synthetic) SAE 20W-50 or equivalent.
Transmission Oil Specification:
Harley-Davidson Formula + (Transmission & Primary Chaincase Lubricant) or equivalent.
Brake Fluid Specification:
DOT 4
Common Wear Items:
Clutch wear, belt drive wear (especially under high torque or abuse), fork seal leaks, and potential for charging system issues in high-mileage vehicles.
Engine Vibrations:
Characteristic of V-twins; proper mounting and balance are key. Manual addresses engine mounting adjustments.
Electrical Connections:
Corrosion or loose connections can lead to intermittent electrical faults; manual details inspection and cleaning procedures.
Brand Origins:
Harley-Davidson Motor Company, founded in 1903 in Milwaukee, Wisconsin, USA. A legendary American motorcycle manufacturer.
Fat Boy Introduction:
The Fat Boy was first introduced in 1990 and quickly became an icon.
Flstf Fat Boy 2011 Updates:
The 2011 model features the larger Twin Cam 103B engine as standard, an improvement over previous 96B engines, and refined styling.
Manufacturing Location:
United States