Segment:
Cruiser Motorcycle
Brand Image:
Iconic American cruiser, renowned for style, V-twin performance, and customization potential.
Competitors:
Indian Chief, Victory Cross Country, custom choppers
Styling:
Classic Fat Boy silhouette, wide front tire, chrome accents, teardrop fuel tank.
Ergonomics:
Comfortable riding position suitable for cruising.
Performance:
Torquey V-twin engine delivering classic Harley-Davidson riding experience.
Powertrain:
Engine, Transmission, Clutch, Drivetrain
Chassis:
Frame, Suspension (Front & Rear), Steering, Brakes (Front & Rear), Wheels, Tires
Electrical:
Ignition, Lighting, Instrumentation, Battery, Charging System, ECM, ABS (if equipped), Security System
Bodywork:
Fuel Tank, Fenders, Seats, Handlebars, Controls, Fairings (if applicable), Trim
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication
Diagnostics:
Troubleshooting procedures, diagnostic codes, symptom-based diagnostics
Repair:
Component disassembly, reassembly, adjustment, replacement for all major systems
Special Tools:
Identification and usage of required Harley-Davidson special tools
Depth:
Comprehensive: From basic service to full engine and transmission rebuilds
Engine Type:
Air-Cooled, Twin Cam 103B™
Displacement:
1690 cc (103 cubic inches)
Bore X Stroke:
3.875 in. x 4.38 in. (98.4 mm x 111.3 mm)
Torque:
Approx. 101 ft-lbs (137 Nm) @ 3,500 RPM
Horsepower:
Not officially stated by Harley-Davidson, estimated in the 70-75 HP range.
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Cooling Method:
Air-cooled
Ignition System:
Crankshaft position sensor, coil-with-spark-plug-mounted, double fires each spark plug when timing is advanced.
Type:
6-Speed Cruise Drive®
Gear Ratios:
1st: 9.593, 2nd: 6.650, 3rd: 4.938, 4th: 3.818, 5th: 3.401, 6th: 2.917
Clutch Type:
Hydraulically actuated, 10-plate wet clutch
Final Drive:
Belt Drive, 32/46 ratio
Transmission Fluid:
Harley-Davidson Formula + (or equivalent SAE 50 transmission oil)
Transmission Oil Capacity:
Approx. 3.0 US qt (2.8 L)
Safety Certification:
Meets applicable US EPA, CARB, and DOT standards.
Brakes:
4-piston fixed front and 2-piston torque-free rear calipers with dual front and single rear rotor.
ABS:
Optional Anti-lock Braking System (ABS)
Lighting:
Halogen headlight, LED tail light, amber incandescent turn signals.
Security:
Factory equipped H-D Smart Security System with proximity-based remotes.
Initial Service:
First service typically at 1,000 miles (1,600 km) or 6 months.
Subsequent Service:
Subsequent service intervals generally every 5,000 miles (8,000 km) or 12 months, with specific checks at 2,500 miles (4,000 km).
Engine Oil:
Harley-Davidson 20W-50 Synthetic Motor Oil (or equivalent)
Primary Chain Case Oil:
Harley-Davidson Formula + (or equivalent SAE 50 transmission oil)
Brake Fluid:
DOT 4 for ABS, DOT 5.1 for non-ABS (Check manual for specific type per system)
Coolant:
N/A (Air-cooled engine)
Engine Oil Capacity:
Approx. 4.0 US qt (3.8 L) with filter change.
Primary Chain Case Oil Capacity:
Approx. 2.4 US qt (2.3 L)
Common Wear Items:
Clutch plates, brake pads, drive belt, fork seals.
Engine Component Care:
Proper oil changes and regular decarbonization (via fuel additives or professional cleaning) are crucial for Twin Cam longevity.
Electrical Considerations:
Battery health and charging system performance are key. Inspect wiring for chafing.
Brand Origin:
Founded in Milwaukee, Wisconsin, USA in 1903. Pioneer of the American motorcycle industry.
Fat Boy Introduction:
The Fat Boy model, with its distinctive wide front tire and 'fat' styling cues, was first introduced in 1990 and quickly became a cultural icon.
2015 Updates:
The 2015 model continues the legacy with the powerful Twin Cam 103B engine, modern fuel injection, and updated braking systems while retaining its classic aesthetic.
Manufacturing Location:
Typically assembled in York, Pennsylvania, or Milwaukee, Wisconsin, USA.
