Vehicle Class:
Cruiser Motorcycle
Segment Appeal:
Known for its distinctive styling, comfortable ride, and V-twin engine power, appealing to riders seeking classic American motorcycle aesthetics.
Competitors 2006:
Other cruiser motorcycles from brands like Indian, Victory, and potentially some Japanese manufacturers with cruiser offerings.
Iconic Styling:
Wide front tire, FL-style fork and triple clamps, teardrop fuel tank, chrome accents, and fat handlebars contribute to its distinctive 'Fat Boy' identity.
Value Proposition:
Essential for owners and independent mechanics to maintain, diagnose, and repair the Harley-Davidson FLSTF Fat Boy 2006, ensuring optimal performance and longevity.
Engine Coverage:
Complete disassembly, inspection, repair, and reassembly of the Twin Cam 88 engine and related components.
Transmission Coverage:
Service and repair of the Cruise Drive 6-speed transmission, including clutch, primary drive, and final drive.
Electrical Coverage:
Detailed wiring diagrams, diagnostic procedures for ignition, lighting, charging, starting, and accessory systems.
Suspension Coverage:
Front fork (telescopic, non-adjustable) and rear shock absorber service, adjustment, and replacement.
Braking Coverage:
Front and rear hydraulic brake system service, including caliper maintenance, pad replacement, fluid flushing, and bleeding.
Fuel System Coverage:
Carburetor (Keihin CV) service, tuning, and repair; fuel injection system components for potential EFI variants if applicable (though FLSTF 2006 is typically carb). Fuel tank and fuel line maintenance.
Chassis Coverage:
Frame inspection, maintenance, and repair; wheel and tire service, including balancing and mounting.
Bodywork Coverage:
Fender, tank, and component removal/installation; seat and handlebar service.
Maintenance Procedures:
Scheduled maintenance tasks, fluid changes, filter replacements, lubrication, and component inspections.
Troubleshooting:
Systematic diagnostic flowcharts and common problem resolution for various vehicle systems.
Repair Procedures:
Step-by-step instructions for component disassembly, repair, and reassembly with torque specifications.
Technical Specifications:
Detailed torque values, clearances, fluid capacities, electrical specifications, and performance data.
Depth:
Comprehensive; covers basic maintenance to complete engine and transmission rebuilds, with detailed diagnostic information.
Engine Type:
Air-cooled, Twin Cam 88 V-twin
Displacement:
1449 cc (88 cubic inches)
Bore X Stroke:
3.75 in. x 4.00 in. (95.25 mm x 101.6 mm)
Horsepower Est:
Approx. 60-65 HP (dependent on tuning and specific configuration)
Torque Est:
Approx. 70-75 ft-lbs @ 3500 RPM (dependent on tuning and specific configuration)
Fuel Delivery:
Keihin CV (Constant Velocity) Carburetor, 40mm
Fuel Type:
Unleaded Gasoline, Minimum 87 Octane
Oil Type:
Harley-Davidson Genuine V-Twin Motorcycle Oil or equivalent SAE 20W-50, API SG, JASO FD/FE certified.
Oil Capacity:
3.0 US quarts (2.8 liters) with filter change
Transmission Type:
Cruise Drive, 6-speed constant mesh
Primary Drive:
Plated, off-set, wet-type, multi-plate clutch
Final Drive:
Carbon-belt, 14mm pitch, 1442mm effective length
Gear Ratios:
1st: 9.342, 2nd: 6.706, 3rd: 4.764, 4th: 3.731, 5th: 3.157, 6th: 2.790
Transmission Fluid:
Harley-Davidson Syn 3 Transmission & Primary Chaincase Lubricant or equivalent SAE 85W-140, API GL-5
Transmission Fluid Capacity:
24 US fluid ounces (0.71 Liters)
Crash Test Ratings:
N/A (Motorcycles typically do not undergo standardized crash testing like automobiles; safety relies on design and rider skill).
Braking System:
Hydraulic disc brakes front and rear.
Lighting:
Halogen headlight, LED taillight and brake light, incandescent turn signals.
First Service:
1,000 miles (1600 km) or 6 months, whichever comes first (engine oil and filter change, primary chaincase oil change, chassis lubrication, inspection of critical components).
Subsequent Service:
Every 5,000 miles (8000 km) or 12 months thereafter (engine oil and filter change, primary chaincase oil change, chassis lubrication, inspection of spark plugs, brake system, drive belt, tires, etc.).
Spark Plug Replacement:
Recommended every 10,000 miles (16,000 km).
Brake Fluid:
DOT 4, Harley-Davidson Heavy Duty DOT 4 Brake Fluid or equivalent.
Primary Chaincase Fluid:
Harley-Davidson Syn 3 Transmission & Primary Chaincase Lubricant or equivalent SAE 85W-140, API GL-5
Common Wear Items:
Clutch plates, brake pads, wheel bearings, fork seals, and drive belt are common wear items that may require periodic replacement.
Electrical Concerns:
While generally reliable, some electrical connectors or grounds may require inspection and cleaning over time, especially in humid environments. The manual will detail diagnostic procedures.
Engine Performance Tuning:
The manual will cover carburetor tuning and adjustment to maintain optimal engine performance and fuel economy, as well as potential adjustments for altitude or modifications.
Heritage Context:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and distinctive cruiser and touring bikes.
Fat Boy Origin:
The Fat Boy model was introduced in 1990 and quickly became a flagship model, known for its unique styling inspired by custom bikes of the 1940s.
2006 Updates:
The 2006 model year featured the introduction of the Twin Cam 88 engine and the Cruise Drive 6-speed transmission, significant upgrades for performance and efficiency over previous iterations.
Production Location:
United States (primarily York, Pennsylvania, and Kansas City, Missouri)
