Segment:
Cruiser Motorcycle
Target Audience:
Harley-Davidson FLSTF Fat Boy owners, independent motorcycle mechanics, enthusiasts
Positioning:
Iconic American cruiser known for its distinctive styling and V-twin performance
Distinctive Features:
Fat tires, wide handlebars, chrome accents, classic styling
Manual Purpose:
To provide comprehensive guidance for maintenance, troubleshooting, and repair of the 2006 Harley-Davidson FLSTF Fat Boy
Primary Coverage:
Full Service, Repair, Workshop
Secondary Coverage:
Maintenance, Troubleshooting, Diagnostics, Overhaul
Estimated Page Count:
600+
Type:
Service Manual / Workshop Manual
Engine Systems:
Twin Cam 88B Engine, Carburetion, Fuel Injection (if applicable for specific models/emissions), Ignition, Lubrication, Cooling (Air-Cooled), Exhaust
Powertrain Systems:
Transmission (5-Speed), Clutch, Primary Drive, Final Drive (Belt Drive)
Chassis Systems:
Frame, Suspension (Front Fork, Rear Shock Absorbers), Steering, Wheels, Tires, Brakes (Front and Rear Disc), Swingarm
Electrical Systems:
Battery, Charging System (Alternator, Regulator), Starting System, Lighting, Ignition System, Instrumentation, Wiring Diagrams, ECM/PCM (if applicable)
Bodywork And Trim:
Fenders, Fuel Tank, Seat, Handlebars, Controls, Footpegs, Covers, Fairings (if equipped), Detailing
Maintenance Procedures:
Scheduled Maintenance, Oil Changes, Filter Replacements, Spark Plug Replacement, Drive Belt Inspection/Adjustment, Brake Fluid Flush, Tire Pressure Checks
Repair Procedures:
Engine Overhaul, Transmission Rebuild, Clutch Service, Fork Seal Replacement, Brake Caliper Rebuild, Wheel Bearing Replacement, Electrical Component Diagnosis and Replacement
Troubleshooting Diagnostics:
Step-by-step diagnostic charts, Common problem identification, Symptom-based troubleshooting guides
Depth:
Comprehensive Rebuild to Routine Maintenance
Detail Level:
Detailed component removal and installation, Torque specifications, Special tool requirements
Engine Type:
Air-cooled, 45-degree V-twin, Evolution (also known as Twin Cam 88B)
Displacement:
1450cc (88 cubic inches)
Bore X Stroke:
3.75 in. x 4.00 in. (95.25 mm x 101.6 mm)
Compression Ratio:
8.8:1 (Typical)
Horsepower:
Approx. 65-70 HP (rated at crankshaft)
Torque:
Approx. 76-80 ft-lbs @ 3000-3500 RPM (rated at crankshaft)
Fuel Delivery:
Carburetor (Keihin CV 40mm)
Fuel Type:
Unleaded Gasoline, 91 Octane (or higher recommended)
Transmission Type:
5-Speed Constant Mesh
Primary Drive:
Duplex Chain, 1.489 ratio
Final Drive:
Belt Drive, 3.15:1 ratio
Clutch Type:
Multi-plate, wet, diaphragm spring
Transmission Fluid Spec:
Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant or equivalent
Safety Ratings:
N/A (Motorcycle safety is primarily assessed through design, construction, and rider behavior, not formal crash ratings like cars)
Braking System:
Dual disc front brakes, Single disc rear brake
Tire Specifications:
Front: MT90B16 72H, Rear: MU85B16 77H
Lighting:
Halogen headlight, Incandescent tail light and turn signals
Audio System:
Base models may not have integrated audio; aftermarket options are common.
Instrumentation:
Analog speedometer, tachometer, fuel gauge, oil pressure indicator, voltmeter, and indicator lights.
ABS:
Anti-lock Braking System (ABS) was an optional feature for 2006 models. Manual will cover its operation and service if equipped.
Connectivity Features:
Minimal, primarily focused on core motorcycle operation. Aftermarket integration for mobile devices is possible.
First Service:
1000 miles (1600 km) or 6 months
Subsequent Service:
Every 5000 miles (8000 km) or 12 months
Drive Belt Tension Check:
Every 5000 miles (8000 km)
Brake Fluid Flush:
Every 2 years
Engine Oil Type:
Harley-Davidson SYN3 Synthetic Motorcycle Oil (20W50 recommended) or equivalent API CG-4 or higher rated oil
Primary Chaincase Fluid:
Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant
Transmission Fluid:
Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant
Cam Chain Tensioners:
Early Twin Cam models (pre-2007) used plastic cam chain tensioner shoes that could wear prematurely. The manual will detail inspection and replacement procedures, potentially recommending upgraded hydraulic tensioners.
Carburetor Issues:
Potential for carburetor tuning issues, sticking slides, or vacuum leaks. Manual covers adjustment and troubleshooting.
Drive Belt Wear:
Regular inspection and proper tensioning are crucial to prevent premature wear or breakage.
Brand Origin:
Founded in Milwaukee, Wisconsin, USA, in 1903
Brand Iconography:
Known for its V-twin engines, distinctive styling, and association with freedom and American culture
Fat Boy Introduction:
Originally introduced in 1990, the Fat Boy quickly became an icon with its solid disc wheels and classic styling.
Flstf Significance 2006:
The 2006 model represents a mature iteration of the Fat Boy, featuring the robust Twin Cam 88B engine and classic styling cues.
Production Location:
United States (Various Harley-Davidson facilities)
Model Recognition:
Consistently praised for its iconic styling and classic cruiser appeal.
Owner Satisfaction:
Generally high owner satisfaction for its segment, reflecting brand loyalty and product appeal.
Manual Certification:
Not applicable (This is a third-party or manufacturer-produced service manual, not a certification of the vehicle itself).
