Target Audience:
Harley-Davidson owners, independent repair shops, technicians
Competitors:
Indian Chief, Victory Kingpin, Honda Shadow, Yamaha V-Star
Vehicle Description:
Iconic styling, comfortable riding position, powerful V-twin engine, known for its robust build and distinctive appearance
Manual Value Proposition:
Empowers owners and technicians with the knowledge to perform maintenance, diagnostics, and repairs, ensuring longevity and optimal performance of the FLSTF Fat Boy
Engine:
Twin Cam 88B V-Twin (1450cc), ignition, fuel injection, cooling, lubrication, exhaust
Transmission:
5-speed Cruise Drive, clutch, primary drive, final drive
Electrical System:
Battery, charging system, ignition system, lighting, instrumentation, starting system, security system
Chassis:
Frame, front suspension (telescopic fork), rear suspension (monoshock swingarm), wheels, tires
Brakes:
Front and rear hydraulic disc brakes, ABS (if equipped)
Fuel System:
Fuel tank, fuel pump, fuel injectors, throttle body, emissions controls
Bodywork:
Fenders, fuel tank, seat, handlebars, controls, covers
Preventive Maintenance:
Oil changes, filter replacements, lubrication points, chain/belt adjustment, brake inspection
Engine Rebuild:
Top-end overhaul, bottom-end overhaul, piston and ring replacement, valve service, timing procedures
Transmission Overhaul:
Gearbox disassembly and reassembly, clutch service, bearing replacement
Electrical Diagnostics:
Wiring diagrams, component testing, fault code interpretation, troubleshooting logic
Suspension Service:
Fork seal replacement, shock absorber service, linkage lubrication
Brake System Repair:
Brake pad replacement, caliper service, hydraulic system bleeding, rotor replacement
Fuel System Cleaning:
Injector cleaning, throttle body cleaning, fuel filter replacement
Tire And Wheel Service:
Tire mounting and balancing, wheel bearing replacement
Depth:
Comprehensive factory-level repair and diagnostic information
Detail Level:
Step-by-step instructions, torque specifications, special tool requirements, diagnostic charts
Engine Type:
Harley-Davidson Twin Cam 88B
Displacement:
1450cc (88 cubic inches)
Configuration:
Air-cooled, 45-degree V-twin
Bore X Stroke:
3.75 in x 4.00 in (95.25 mm x 101.6 mm)
Valve Train:
Overhead valves (OHV), 2 valves per cylinder
Horsepower Est:
Approx. 65-70 HP (at crank)
Torque Est:
Approx. 80-85 lb-ft (at crank)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded gasoline, minimum 91 octane recommended
Engine Oil Capacity:
4.0 US qt (3.8 L) with filter change
Recommended Oil:
Harley-Davidson SYN3 (20W-50) or equivalent motorcycle-specific V-twin oil
Transmission Type:
5-speed Manual
Gear Ratios:
1st: 9.31, 2nd: 6.45, 3rd: 4.77, 4th: 3.88, 5th: 3.15
Transmission Oil Capacity:
24 US oz (0.7 L)
Transmission Oil Type:
Harley-Davidson Formula+, Formula+ V-Twin Transmission Lubricant, or equivalent
Crash Test Ratings:
N/A (Motorcycle)
Braking System:
Dual-action, four-piston front caliper, two-piston rear caliper; hydraulic front and rear disc brakes. Optional ABS available on some models.
Lighting:
Halogen headlamp, stop/tail lights, amber front and rear turn signals
Chassis Design:
Sturdy steel frame provides stability and handling
Security System:
Factory-installed H-D Datalink immobilizer security system with siren (standard on most 2006 models)
Audio System:
Optional accessory audio systems were available from the dealer.
Instrumentation:
Analog speedometer, tachometer, fuel gauge, voltmeter, oil pressure indicator, and indicator lamps.
ABS:
Anti-lock Braking System (ABS) was an optional feature for the 2006 model year.
Diagnostics:
Utilizes a Delphi Electronic Control Module (ECM) for engine management, accessible via diagnostic tools (covered in manual).
First Service:
1000 miles (1600 km) or 6 months, whichever comes first
Subsequent Service:
Every 5000 miles (8000 km) or 12 months, whichever comes first
Engine Oil Change Interval:
Every 5000 miles (8000 km) or 12 months
Primary Chain Tensioner Check:
Every 2500 miles (4000 km) or 6 months
Engine Oil:
Harley-Davidson SYN3 (20W-50) or equivalent motorcycle-specific V-twin oil meeting Harley-Davidson specifications
Transmission Oil:
Harley-Davidson Formula+ or equivalent
Primary Chain Case Oil:
Harley-Davidson Formula+ or equivalent
Fork Oil:
Refer to manual for specific grade (typically 10W or 15W)
Primary Chain Tensioner Wear:
Hydraulic tensioner can wear out, leading to noise and potential chain damage. Regular inspection recommended.
Cam Chain Tensioner Wear:
Similar to primary tensioner, cam chain tensioners can wear on early Twin Cam engines, though the 88B has a different setup than the 88A. Manual covers inspection and replacement.
Crankshaft Position Sensor Failure:
Can cause intermittent starting issues or stalling.
Idle Air Control Valve Issues:
Can lead to rough idle or stalling.
Heritage:
Harley-Davidson Motor Company, established in 1903, is an iconic American motorcycle manufacturer with a rich history of innovation and cultural impact.
Fat Boy Introduction:
The Fat Boy model was first introduced in 1990 as part of the FXST line, characterized by its distinctive solid-cast aluminum disc wheels and fat tires.
Flstf Development:
The FLSTF is a variation of the Softail chassis, which debuted in 1984, featuring a hidden rear monoshock suspension system that mimics the appearance of a hardtail frame.
Production Years Flstf:
1990 - Present (with various engine and feature updates)
Manufacturing Location:
United States