Positioning:
Cruiser motorcycle, known for its distinctive styling and powerful V-twin engine, targeting riders who appreciate classic design with modern performance.
Competitors:
Other Harley-Davidson Softail models, Indian Chief models, select American V-twin motorcycles from other manufacturers.
Model Features:
Low seat height, wide handlebars, classic Fat Boy styling cues, powerful V-twin engine, comfortable riding position.
Usefulness:
Provides essential, detailed information for owners and mechanics to perform maintenance, diagnostics, and repairs, ensuring optimal performance and longevity.
Primary Coverage:
Service, Repair, Maintenance, Diagnostics, Troubleshooting
Secondary Coverage:
Component disassembly and assembly, adjustments, specifications, special tools
Type:
Workshop Service Manual
Download Availability:
Instant Download
Engine:
Engine mechanical, fuel system, ignition system, lubrication system, cooling system (if applicable for the model variant)
Transmission Drivetrain:
Primary drive, transmission, clutch, final drive
Chassis Suspension:
Frame, front suspension (forks), rear suspension (shocks), wheels, tires, steering system
Brakes:
Brake system (front and rear), hydraulic systems, components
Electrical System:
Battery, charging system, starting system, lighting, ignition, instrumentation, wiring diagrams, sensors
Fuel System:
Fuel tank, fuel pump, fuel injectors, throttle body, EFI system
Exhaust System:
Exhaust pipes, mufflers, catalytic converter (if equipped)
Bodywork:
Body panels, fenders, seat, controls, fairings (if applicable)
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication
Troubleshooting:
Diagnostic procedures, common issues and solutions, fault finding
Repair:
Detailed step-by-step repair instructions for all major components
Disassembly Assembly:
Complete procedures for removing and installing components
Adjustments:
Calibration and adjustment procedures for various systems (e.g., clutch, brakes, throttle)
Diagnostic Troubleshooting:
Diagnostic flowcharts, trouble codes, sensor testing
Depth:
Comprehensive, from basic maintenance to advanced engine and electrical system diagnostics and repair
Illustrations:
Pictorial diagrams, exploded views, photos, line drawings
Special Tools:
Identification and usage of required special service tools
Specifications:
Detailed service data, tightening torques, wear limits, measurement specifications
Engine Type:
Twin Cam 103 (likely, standard for FLSTFB models in this era)
Engine Configuration:
45-degree V-twin, air-cooled
Displacement:
1690 cc (103 cubic inches)
Bore X Stroke:
3.875 in. x 4.380 in. (98.4 mm x 111.3 mm)
Torque Rating:
Approx. 100 ft-lbs @ 3,000 RPM (varies slightly by specific tune and year)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Premium unleaded gasoline
Crash Safety:
Motorcycle safety is primarily dependent on rider skill and adherence to safe riding practices. Specific crash ratings like automotive standards are not applicable.
Braking System:
Hydraulic disc brakes (dual front, single rear)
ABS:
Optional, check VIN or specific model configuration
Lighting:
Halogen headlamp, LED tail lamp and brake light, amber incandescent turn signals.
Tire Pressure Monitoring:
Not typically standard on this model year, check specific options.
First Service:
Typically at 1,000 miles (1,600 km) or 6 months, whichever comes first.
Subsequent Service:
Generally every 5,000 miles (8,000 km) or 12 months for routine checks and fluid changes, with more detailed inspections at higher mileage intervals.
Engine Oil:
Harley-Davidson Genuine V-Twin 20W-50 Synthetic (or equivalent meeting Harley-Davidson specification H-D 360).
Transmission Primary Oil:
Harley-Davidson Genuine Formula + Transmission & Primary Chaincase Lubricant (or equivalent meeting Harley-Davidson specification H-D 360).
Brake Fluid:
DOT 4 (refer to specific sections for bleeding procedures and fluid type verification).
Fork Oil:
Harley-Davidson Genuine Fork Oil (viscosity varies based on specific fork type, consult manual for correct type and amount).
Common Problems:
While generally reliable, common areas for attention can include clutch adjustment, potential for minor oil leaks with age, and electrical connections. The manual addresses these and provides solutions.
Part Replacement:
Emphasis on using genuine Harley-Davidson parts or equivalent specified aftermarket parts to maintain performance and safety.
Brand Legacy:
Harley-Davidson is an iconic American motorcycle manufacturer with a rich history dating back to 1903, renowned for its V-twin engines and classic cruiser styling.
Fat Boy Lineage:
The Fat Boy model was introduced in 1990 and quickly became a cultural icon. The 'Lo' version, introduced later, offers a lower seat height and a more streamlined profile, fitting into the Softail family.
Manufacturing Location:
Primarily assembled in the United States (e.g., York, Pennsylvania, or Milwaukee, Wisconsin for final assembly).
Production Years:
The FLSTFB Fat Boy Lo was produced for several model years, including 2015.
