Vehicle Class:
Cruiser Motorcycle
Target Audience:
Enthusiasts seeking to perform maintenance, repairs, and modifications on their Harley-Davidson Fat Boy.
Competitors:
Other V-twin cruiser manufacturers (e.g., Indian, Victory), custom motorcycle builders.
Design Philosophy:
Iconic styling, V-twin engine performance, comfortable cruising ergonomics.
Manual Value Proposition:
Enables owners to maintain their investment, reduce service costs, and understand their motorcycle's intricacies.
Engine Mechanics:
Complete engine disassembly, assembly, troubleshooting, and tuning for Twin Cam 96 engine.
Fuel System:
Fuel injection (EFI) system diagnostics, component testing, fuel pump, injectors, sensors.
Ignition System:
Ignition module, coil, spark plugs, timing.
Transmission Drivetrain:
5-speed transmission service, clutch operation and adjustment, primary drive, belt drive system.
Electrical System:
Wiring diagrams, battery, charging system, starter, lighting, instrumentation, ECM, security system.
Chassis Frame:
Frame inspection, steering head bearing service, fork assembly and disassembly, swingarm pivot service.
Suspension:
Front fork maintenance (oil change, seal replacement), rear shock absorber service.
Braking System:
Front and rear brake caliper service, hydraulic system bleeding, pad replacement, master cylinder overhaul.
Wheel Tire Service:
Wheel bearing replacement, tire mounting/disassembly, balancing.
Body Components:
Fender removal/installation, fuel tank servicing, seat removal, handlebar replacement.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, lubrication points.
Troubleshooting:
Diagnostic procedures for common engine, electrical, and mechanical faults, DTC code interpretation.
Component Overhaul:
Detailed steps for rebuilding the engine, transmission, and other major components.
Adjustment Calibration:
Clutch adjustment, throttle cable adjustment, idle speed settings, brake lever adjustment.
Electrical Diagnostics:
Testing of sensors, actuators, wiring harnesses, and electronic control modules (ECM).
Wheel Alignment:
Steering head alignment checks.
Torque Specifications:
Precise torque values for all critical fasteners.
Level Of Detail:
Comprehensive, suitable for professional technicians and experienced DIY mechanics.
Diagnostic Capability:
Includes troubleshooting flowcharts and specific diagnostic procedures.
Rebuild Procedures:
Detailed steps for complete engine, transmission, and suspension component rebuilds.
Electrical Schematics:
Full, high-resolution wiring diagrams for all electrical systems.
Engine Family:
Harley-Davidson Twin Cam
Engine Type:
Air-cooled, 45-degree V-twin
Displacement:
1584 cc (96 cubic inches)
Bore X Stroke:
3.75 in. x 4.38 in. (95.25 mm x 111.25 mm)
Horsepower:
Approximately 70-75 HP (est. at crankshaft, subject to tuning)
Torque:
Approximately 90-95 ft-lbs @ 3500 RPM (est. at crankshaft)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded gasoline, minimum 91 octane (R+M)/2 recommended
Fuel Tank Capacity:
5.0 US gallons (18.9 L)
Safety Certification:
Meets FMVSS applicable for motorcycles
Braking System Type:
Dual disc front, single disc rear hydraulic brakes with front and rear caliper
ABS Availability:
Optional (Anti-lock Braking System)
Lighting:
Halogen headlamp, LED tail lamp and brake lamp, amber incandescent turn signals.
Security:
Factory-installed H-D Smart Security System (optional, with immobilizer and siren)
Instrumentation:
Analog speedometer, tachometer, fuel gauge, oil pressure indicator, voltmeter, and indicator lights. Trip meter, clock.
Audio System:
N/A (Stock configuration; aftermarket audio systems are common.)
Cruise Control:
Optional electronic cruise control
Diagnostic Port:
4-pin diagnostic connector for electronic troubleshooting and data retrieval.
First Service:
1,000 miles (1,600 km) or 6 months
Subsequent Service:
Every 5,000 miles (8,000 km) or 12 months thereafter, with specific items at different intervals (e.g., primary chain tensioner inspection every 10,000 miles).
Engine Oil Type:
Harley-Davidson SYN3 Synthetic (or equivalent API SG, JASO FD, SE 20W50)
Engine Oil Capacity:
3.0 US quarts (2.8 L) with filter change
Primary Chain Case Oil:
Harley-Davidson Formula + (or equivalent primary lubricant)
Primary Chain Case Oil Capacity:
2.7 US quarts (2.6 L)
Transmission Oil:
Harley-Davidson SYN3 Synthetic (or equivalent for HD transmission)
Transmission Oil Capacity:
2.5 US quarts (2.4 L)
Brake Fluid Type:
DOT 4, Harley-Davidson Premium Hand Control and Brake Fluid
Common Wear Items:
Clutch friction plates, brake pads, wheel bearings, fork seals.
Engine Specific Considerations:
Primary chain tensioner wear (Hydraulic tensioner upgrade often recommended post-2006 models), potential for oil leaks from seals and gaskets over time.
Electrical Concerns:
Occasional issues with voltage regulator or stator failure, wiring harness integrity.