Segment:
Cruiser Motorcycle segment, known for its custom styling and V-twin performance.
Competitors:
Indian Chief, Triumph Bonneville, Victory Hammer/Kingpin, Japanese V-twins (e.g., Honda Shadow, Yamaha V-Star).
Street Bob Dna:
Minimalist styling, drag handlebars, solo seat, bobbed fenders, raw attitude.
Fat Bob Dna:
Aggressive stance, dual front brakes, larger front tire, distinctive dual headlights, wider handlebars.
Primary Coverage:
Complete Service and Repair for Harley-Davidson Dyna Street Bob (FXDB) and Dyna Fat Bob (FXDF) models
Secondary Coverage:
Maintenance, Troubleshooting, Component Overhaul, Electrical Systems, Chassis Components
Type:
Factory Service Manual (FSM) / Workshop Manual
Format:
Likely PDF (digital download) or Printed Book
Powertrain:
Engine, Transmission, Clutch, Primary Drive
Chassis:
Frame, Suspension (Front Forks, Rear Shocks), Steering, Wheels, Tires, Brakes, Fenders
Electrical:
Ignition System, Lighting, Instruments, Battery, Charging System, Starting System, Wiring Diagrams
Fuel System:
Fuel Tank, Fuel Pump, Fuel Injection (EFI) System, Intake System
Maintenance:
Scheduled Maintenance, Oil Changes, Filter Replacements, Lubrication, Adjustments
Troubleshooting:
Diagnostic Procedures, Fault Code Interpretation, Symptom-Based Troubleshooting
Repair:
Component Removal, Installation, Overhaul, Reassembly of Engine, Transmission, Brakes, Suspension, etc.
Special Tools:
Identification and Usage of Harley-Davidson Specific Tools
Depth:
Comprehensive: Covers basic to advanced repairs, including full engine and transmission rebuilds, diagnostics, and electrical system tracing.
Digital Quality:
High-resolution scans or native digital files, often with searchable text and hyperlinked sections.
Print Options:
Printable pages, suitable for professional or home printing.
Physical Binding:
If printed: Saddle-stitched, perfect bound, or spiral bound for ease of use.
Physical Paper:
If printed: Durable, likely coated paper stock to withstand workshop conditions.
Engine Family:
Harley-Davidson Twin Cam 96B
Displacement:
1584 cc (96 cubic inches)
Configuration:
4-Stroke, 2-Cylinder, V-Twin, Air-Cooled OHV (Pushrod Actuated Valves)
Bore X Stroke:
3.75 in x 4.38 in (95.25 mm x 111.25 mm)
Horsepower Approx:
70-75 HP (at crankshaft, estimated)
Torque Approx:
85-90 ft-lbs (at crankshaft, estimated)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded Gasoline, minimum 91 octane (RON+MON)/2
Intake System:
Air-cooled, externally referenced, closed-loop fuel injection system.
Type:
6-Speed Cruise Drive
Primary Drive:
Plated, Heavy-duty, 1.25-inch, 34-tooth, 4-tooth, 5-speed constant mesh primary drive
Final Drive:
Carbon fiber belt, 25mm wide, 145T, 2.216:1 ratio
Gear Ratios Approx:
1st: 9.315, 2nd: 6.659, 3rd: 4.946, 4th: 3.895, 5th: 3.291, 6th: 2.790
Transmission Fluid:
Harley-Davidson Formula + Transmission & Primary Chaincase Lubricant, or equivalent API GL-5 rated gear oil (75W-90 recommended)
Transmission Capacity:
Approx. 32 oz (0.95 L)
Crash Safety Ratings:
Not typically rated by agencies like NHTSA; rider skill and protective gear are paramount.
Front Brakes:
Dual 292mm (11.5 in) discs with 4-piston calipers (Fat Bob) / Single 292mm (11.5 in) disc with 4-piston caliper (Street Bob)
Rear Brakes:
Single 292mm (11.5 in) disc with 2-piston caliper
ABS:
Optional (Anti-lock Braking System) on select models/years within this range.
Lighting:
Halogen Headlight (Single on Street Bob, Dual on Fat Bob), LED Tail/Brake Lamp, Incandescent Turn Signals.
Gauge Cluster:
Analog speedometer with integrated tachometer (on some models), fuel gauge, oil pressure indicator, neutral indicator, turn signal indicators.
Audio System:
Generally not standard. Optional factory or aftermarket audio systems were available.
ABS Availability:
Optional, as mentioned in safety section.
Diagnostic Ports:
Proprietary Harley-Davidson diagnostic connectors for service.
First Service:
1000 miles (1600 km) or 6 months, whichever comes first. Includes oil change, primary lubricant change, and inspection.
Subsequent Oil Change:
Every 5000 miles (8000 km) or 12 months.
Primary Lubricant Change:
Every 1000 miles (1600 km) or annually.
Engine Oil Change:
Every 5,000 miles (8,000 km) or annually, using recommended Harley-Davidson 20W-50 Synthetic or Mineral Oil.
Belt Tension Check:
Every 10,000 miles (16,000 km).
Engine Oil Type:
Harley-Davidson SYN3 (20W-50 Synthetic) or recommended 20W-50 Motorcycle Oil.
Engine Oil Capacity:
Approx. 3.0 US quarts (2.8 L) with filter change.
Cam Chain Tensioners:
Early Twin Cam models (pre-2007) had hydraulic tensioners prone to wear. 2007+ models utilize improved spring-loaded or upgraded hydraulic tensioners, but inspection is still advised.
Primary Drive Leaks:
Potential for primary chaincase seal leaks, particularly the mainshaft seal.
Rear Shock Leaks:
Original rear shocks may develop leaks over time and mileage.
Rear Belt Wear:
Proper belt tension and alignment are crucial to prevent premature wear.
Brand Origin:
Founded in Milwaukee, Wisconsin, USA in 1903, pioneering the American motorcycle industry.
Dyna Platform Introduction:
The Dyna chassis was introduced in 1991, evolving from earlier Harley-Davidson platforms.
Twin Cam Introduction:
The Twin Cam engine family was introduced in 1999, offering improved performance and reliability over the Evolution engine.
Street Bob Fxdb Introduction:
The Street Bob model was introduced to offer a more stripped-down, custom look within the Dyna line.
Fat Bob Fxdx Introduction:
The Fat Bob designation has a longer history, often associated with larger tires and more aggressive styling, refined in the Dyna platform.
Manufacturing Location:
Primarily USA (e.g., York, Pennsylvania; Milwaukee, Wisconsin for engine assembly).
Platform Discontinuation:
The Dyna platform was phased out by Harley-Davidson in 2017, with its lineage continuing in the new Softail platform.
