🏷️ Basic Information Identification Make: Harley-Davidson Model: Softail FLSTFB Fat Boy Lo Year: 2015 Codes Model Code: FLSTFB Generation Softail Generation: Pre-Milwaukee-Eight (Showa Front Fork) 👋 Introduction Market Position Segment: Cruiser, specifically a modern classic cruiser with a retro aesthetic. Competitive Analysis Competitors: Other large displacement cruisers from brands like Indian Motorcycle, and potentially some Japanese manufacturers' V-twin offerings. Key Features Fat Boy Lo Distinction: Low seat height, distinctive 'Fat' front and rear tires, chrome and gloss black finishes, classic styling cues. Target Audience Intended Users: Owners seeking to perform routine maintenance, repairs, and diagnostics on their 2015 Harley-Davidson Softail FLSTFB Fat Boy Lo, ranging from DIY enthusiasts to professional mechanics. 📋 Manual Details Coverage Areas Primary Coverage: Complete service, repair, and maintenance for the 2015 Harley-Davidson Softail FLSTFB Fat Boy Lo. Page Count Estimated Pages: Detailed information suggests comprehensive coverage, likely exceeding 500 pages given typical Harley-Davidson service manuals. Manual Type Type: Service Repair Manual (Workshop Manual) Language Language: English Format Format: Digital PDF (Instant Download) 📖 Manual Coverage Systems Covered Engine Systems: Engine disassembly, assembly, troubleshooting, diagnostics, tuning, fuel system (EFI), ignition system, lubrication system, cooling system (air-cooled). Transmission Drivetrain: Transmission service and repair, clutch operation and adjustment, final drive (belt drive system) inspection and maintenance. Chassis Suspension: Frame inspection, front fork service (Showa), rear shock absorber service and adjustment, wheel bearing service, steering head bearing service. Electrical System: Wiring diagrams, battery maintenance, charging system (alternator/stator, regulator/rectifier), starting system (starter motor), lighting systems, instrument cluster, security system (H-D Smart Security System). Brakes Controls: Brake system (front and rear disc brakes), hydraulic system, brake pad replacement, bleeding procedures, control cables and levers adjustment. Bodywork Trim: Fender removal and installation, fuel tank service, seat removal, handlebar and control layout, body panel fitment. Procedures Included Maintenance Procedures: Scheduled maintenance intervals, oil changes (engine, transmission, primary), filter replacements, spark plug replacement, brake fluid flush, tire pressure checks, lubrication points. Repair Procedures: Step-by-step instructions for engine overhauls, transmission rebuilds, suspension component replacement, electrical diagnostics and repair, brake caliper overhaul. Troubleshooting Diagnostics: Systematic troubleshooting guides for common and uncommon issues, diagnostic fault codes (if applicable), electrical system tracing. Technical Depth Depth Of Coverage: Comprehensive, from basic owner maintenance to advanced engine and transmission rebuilds, including detailed torque specifications and diagnostic procedures. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Capability: Full Printable Binding Type Binding Type: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) Usability Zoom Functionality: YES (Zoom IN/OUT for diagrams and text) Searchability: Likely searchable text content within the PDF. ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, Twin Cam 103B V-twin Displacement: 103 cubic inches (1690 cc) Bore X Stroke: 3.875 in. x 4.38 in. (98.4 mm x 111.1 mm) Compression Ratio: 9.6:1 Performance Horsepower Rating: Approx. 79 HP @ 5000 RPM (Manufacturer Estimate) Torque Rating: Approx. 105 ft-lbs @ 3500 RPM (Manufacturer Estimate) Fuel System Fuel Delivery: Electronic Sequential Port Fuel Injection (ESPFI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Ignition Ignition System: High-output, coil-over-plug ignition 🔧 Transmission Standard Transmission Type: 6-speed Cruise Drive Features Gear Ratios: 1st: 9.312, 2nd: 6.653, 3rd: 4.948, 4th: 3.831, 5th: 3.157, 6th: 2.790 Clutch Clutch Type: Hydraulic, multi-plate wet clutch Final Drive Final Drive Type: Belt Drive, 32/66 ratio 📐 Dimensions Exterior Length: 92.0 in. (2337 mm) Width: 38.0 in. (965 mm) Height: 46.7 in. (1186 mm) Wheelbase: 64.5 in. (1638 mm) Weights Dry Weight: 691 lbs (313 kg) Gross Vehicle Weight Rating Gvwr: 1260 lbs (572 kg) Capacities Fuel Capacity: 5.0 gal (18.9 L) Oil Capacity: 3.0 qt (2.8 L) (with filter change) Transmission Oil Capacity: 1.0 qt (0.95 L) Primary Chain Case Oil Capacity: 1.0 qt (0.95 L) 🛡️ Safety Features Passive Features Lighting: Halogen headlamp, LED tail light, LED turn signals, brake light. Brakes: Hydraulic disc brakes front and rear with chrome calipers. Active Features Security: Factory-installed Harley-Davidson Smart Security System with proximity-based, hands-free fob. ABS: Anti-lock Braking System (ABS) is an optional feature for this model, check specific VIN for presence. 💡 Technology Features Infotainment Audio System: Base models typically do not feature a factory-installed audio system. Aftermarket integration is common. Driver Assistance Cruise Control: Cruise control is typically standard or optional on the FLSTFB model depending on specific configurations. Connectivity Diagnostic Ports: Features diagnostic connectors for use with Harley-Davidson's Digital Technician II or compatible aftermarket diagnostic tools. 🔧 Maintenance Service Intervals First Service: 1,000 miles (1,600 km) or 6 months, whichever comes first. Subsequent Services: Every 5,000 miles (8,000 km) or 12 months, whichever comes first. Engine oil and filter changes recommended every 5,000 miles. Fluid Specifications Engine Oil: Harley-Davidson Genuine Motor Oil SAE 20W-50 (or equivalent API CI-4 or higher). Transmission Oil: Harley-Davidson Genuine Formula + Transmission Oil (or equivalent GL-4 SAE 80W-90). Primary Chain Case Oil: Harley-Davidson...