Segment:
Cruiser Motorcycle
Target Audience:
Harley-Davidson FLSTF Fat Boy owners, independent repair shops, technicians
Differentiation:
Provides manufacturer-level detail for a specific, iconic Harley-Davidson model
Content Focus:
Detailed repair instructions, diagnostic procedures, and technical specifications essential for maintenance
Engine Systems:
Twin Cam 103 engine service, diagnosis, and overhaul
Transmission Systems:
6-speed Cruise Drive transmission service, maintenance, and repair
Electrical Systems:
Wiring diagrams, ignition system, lighting, starting and charging systems, diagnostics
Fuel System:
Fuel injection (EFI) system, fuel pump, injectors, throttle body service and diagnostics
Brake Systems:
Hydraulic brake system service, bleeding, caliper and master cylinder repair
Suspension Systems:
Front fork (Telescopic) and rear shock absorber service, adjustment, and replacement
Chassis Systems:
Frame inspection, steering head bearing service, wheel and tire service
Bodywork And Trim:
Fender and tank removal/installation, seat service, accessory mounting
Maintenance:
Routine service, oil changes, filter replacements, lubrication, inspection points
Troubleshooting:
Diagnostic procedures for common and complex issues, fault code interpretation
Repair:
Detailed step-by-step instructions for component disassembly, repair, and reassembly
Diagnostics:
Engine performance analysis, electrical system testing, suspension tuning
Specifications And Tolerances:
Torque values, clearances, fluid capacities, and dimensional specifications
Depth:
Comprehensive, from basic adjustments to full engine and transmission rebuilds
Quality:
High-resolution, searchable PDF
Print Capability:
Printable pages for workshop use
Binding For Print:
Not applicable (PDF download), but designed for easy printing and binding
Paper Recommendation For Print:
Heavy-duty, glossy paper recommended for durability in a workshop environment
Engine Type:
Harley-Davidson Twin Cam 103 V-Twin
Displacement:
1690 cc (103 cubic inches)
Bore X Stroke:
3.875 in x 4.375 in (98.4 mm x 111.1 mm)
Valve Train:
Overhead valves (OHV), pushrod activated, 2 valves per cylinder
Cooling System:
Air-cooled
Horsepower Estimated:
Approximately 75-80 HP (at crankshaft, model dependent)
Torque Estimated:
Approximately 95-100 lb-ft (at crankshaft, model dependent)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Ignition Type:
High-performance electronic ignition
Transmission Type:
6-speed Cruise Drive
Gear Ratios:
Provided in manual (e.g., 1st: 9.593, 2nd: 6.650, 3rd: 4.938, 4th: 3.814, 5th: 3.168, 6th: 2.790)
Clutch Type:
Clutched, multi-plate, wet
Drive Type:
Primary drive: helical, chain; Final drive: belt
Transmission Fluid Type:
Formula + Transmission Lubricant (or equivalent)
Crash Test Ratings:
Not applicable to motorcycles in the same manner as cars; focus is on operational safety and rider protection
Braking System:
Hydraulic disc brakes, front and rear
Front Brake Spec:
Dual 292 mm discs, 4-piston calipers
Rear Brake Spec:
Single 292 mm disc, 2-piston caliper
Lighting:
Halogen headlamp, LED tail lamp, amber LED turn signals
Chassis Stability:
Low center of gravity, wide tire profile for stability
Audio System:
Optional audio system (e.g., AM/FM/Weather band) available on some configurations, not standard on all FLSTF models.
Display:
Analog speedometer with integrated digital display (odometer, trip meters, gear indication, fuel level)
ABS:
Anti-lock Braking System (ABS) was an optional feature for 2011 models.
Cruise Control:
Electronic cruise control was an optional feature on the FLSTF for 2011.
Initial Service:
Typically at 1,000 miles (1600 km) or 6 months
Subsequent Service:
Every 5,000 miles (8,000 km) or 12 months for oil change and inspection
Major Service Intervals:
Detailed in manual (e.g., transmission fluid, primary chain adjustment)
Engine Oil Type:
Harley-Davidson SYN3 (Synthetic) SAE 20W50 or equivalent motorcycle-specific oil
Engine Oil Capacity:
Approximately 4 US quarts (3.8 L) with filter change
Primary Chain Case Oil Type:
Formula + Primary Chain Lubricant or HD SYN3
Primary Chain Case Oil Capacity:
Approximately 2.8 US quarts (2.6 L)
Transmission Oil Type:
Formula + Transmission Lubricant or HD SYN3
Transmission Oil Capacity:
Approximately 1 US quart (0.95 L)
Brake Fluid Type:
DOT 4 (for hydraulic clutch and brakes)
Common Wear Items:
Clutch plates, brake pads, wheel bearings, tires, spark plugs
Twin Cam Specifics:
Potential for oil pressure leaks, cam chain tensioner wear (especially earlier models, though 2011 TC96/103 are improved).
Electrical Quirks:
Wiring harness integrity, ground connections
Brand Origin:
Harley-Davidson Motor Company, founded 1903 in Milwaukee, Wisconsin, USA
Brand Identity:
Iconic American motorcycle manufacturer, known for V-twin engines and cruiser styling
Fat Boy Introduction:
First introduced in 1990 as a 1990 model year, inspired by the Harley-Davidson Hydra-Glide and the movie 'Terminator 2: Judgment Day'
Fat Boy Distinctive Features:
Solid aluminum disc wheels, teardrop fuel tank, wide front fork, chrome accents
Twin Cam Introduction:
Twin Cam engines introduced in 1999, becoming the staple for Harley-Davidson touring and Softail models
Production Era:
FLSTF Fat Boy models produced continuously since 1990, with engine upgrades over the years
Manufacturing Location:
USA (specific plant varies)
