Segment:
Cruiser Motorcycle
Target Audience:
Harley-Davidson FLSTF Softail Fat Boy owners, independent repair shops, enthusiasts
Value Proposition:
Provides detailed, accurate, and complete repair information to maintain and service the vehicle, potentially saving significant costs compared to dealership service.
Manual Features:
Step-by-step instructions, torque specifications, diagnostic flowcharts, wiring diagrams, exploded views
Engine:
Engine overhaul, diagnosis, tuning, lubrication, cooling, fuel system, ignition system, exhaust system
Transmission:
Clutch, gearbox, final drive, driveline maintenance and repair
Chassis:
Frame, swingarm, front fork, rear suspension, steering head, wheels, tires, braking system
Electrical:
Battery, charging system, ignition, lighting, instruments, switches, wiring diagrams, ECM, ABS
Bodywork:
Fenders, fuel tank, seat, handlebars, controls, fairings, trim components
Frame And Body:
Frame inspection, alignment, body panel removal and installation, seat, fuel tank, fenders.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, brake bleeding, spark plug replacement
Repair:
Component disassembly, inspection, repair, and reassembly for all major systems
Troubleshooting:
Diagnostic procedures, fault finding, symptom-based troubleshooting guides
Suspension Adjustment:
Front fork oil level and damping adjustment, rear shock preload adjustment.
Wheel And Tire Service:
Wheel bearing replacement, tire mounting and balancing, spoke adjustment (if applicable to spokes).
Fuel System Overhaul:
Fuel pump, fuel injectors, fuel pressure regulator diagnosis and replacement.
Ignition System Diagnostics:
Spark plug analysis, ignition coil testing, crank position sensor (CKP) and cam position sensor (CMP) testing.
Depth:
Comprehensive, from basic adjustments to complete engine and transmission rebuilds
Diagnostic Tools:
Procedures for using Harley-Davidson diagnostic tools (e.g., Digital Technician) and interpreting error codes (DTCs).
Engine Type:
Air-cooled, Twin Cam 103™ V-Twin
Displacement:
1690 cc (103 cu. in.)
Bore X Stroke:
3.875 in. x 4.375 in. (98.4 mm x 111.3 mm)
Torque Spec:
Approx. 99.5 ft-lbs (135 Nm) @ 3,000 RPM (Typical for Twin Cam 103)
Induction:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded gasoline, minimum 87 octane
Oil Type:
Harley-Davidson Syn3™ Synthetic Motorcycle Oil (or equivalent API SG, SH, SJ, SL, SM, SN or J1800 certified) SAE 20W-50
Crankcase Oil Capacity:
3.0 US qt (2.8 L) (without filter change); 3.4 US qt (3.2 L) (with filter change)
ABS:
Optional Anti-lock Braking System (ABS) available
Braking System Front:
4-piston fixed caliper, dual 300mm discs
Braking System Rear:
2-piston floating caliper, 292mm disc
Lighting System:
Halogen headlight, LED tail light, incandescent front and rear turn signals
First Service:
1000 miles (1600 km) or 6 months
Subsequent Service:
Every 5000 miles (8000 km) or 12 months, whichever comes first
Primary Chain Case Fluid:
Harley-Davidson Primary Chaincase Lubricant (or equivalent SAE 75W-90 API GL-5) - 1 US qt (0.95 L)
Common Wear Items:
Clutch friction plates, brake pads, tires, fork seals, wheel bearings
Potential Engine Issues:
Potential for oil leaks (e.g., primary cover, crankcase seals), timing chain tensioner wear (earlier models, though 2012 Twin Cam 103 is generally robust), exhaust flange leaks.
Potential Electrical Issues:
Wiring harness chafing, regulator/rectifier failures (though improved in later Twin Cam models), starter solenoid issues.
Engine Oil Filter Part Number:
63731-98 (or equivalent)
Spark Plug Part Number:
6R12 (or equivalent)
Brand Origin:
American motorcycle manufacturer founded in 1903
Softail Introduction:
The Softail platform, known for its hidden rear suspension, was first introduced in 1983.
Fat Boy Introduction:
The Fat Boy model was introduced in 1990, characterized by its distinctive styling, solid-cast wheels, and fat tires.
Manufacturing Location:
York, Pennsylvania, USA and/or Milwaukee, Wisconsin, USA
