Vehicle Segment:
Harley-Davidson's premium full-size touring motorcycles, designed for long-distance comfort and performance.
Competitors 2004:
Primarily competed with other large displacement cruiser touring motorcycles from brands like Honda (Gold Wing), Indian, and custom-built choppers.
Touring Focus:
Emphasizes rider and passenger comfort, extensive storage capacity (saddlebags, tour-pak), and stable handling for highway cruising.
Engine Heritage:
Features the iconic Harley-Davidson V-twin engine architecture, known for its torque and distinctive sound.
Engine:
Twin Cam 88 and Twin Cam 95 V-Twin engines (including EFI variants).
Transmission:
5-speed Cruise Drive transmission.
Electrical:
Full electrical system schematics, troubleshooting, component testing, and diagnostics for all models, including EFI systems and ignition.
Chassis Suspension:
Front forks (including air-adjustable suspension where applicable), rear shock absorbers, steering head bearings, and swingarm.
Braking:
Front and rear brake system service, including master cylinders, calipers, rotors, and hydraulic lines.
Fuel System:
Carbureted (Keihin CV) and Electronic Fuel Injection (EFI) systems, including fuel pump, injectors, sensors, and ECM.
Cooling:
Air-cooled engine principles and maintenance, coolant checks for liquid-cooled components if applicable to specific sub-models (though primarily air-cooled).
Maintenance:
Scheduled maintenance, oil changes, filter replacements, lubrication, spark plug service, brake fluid flush, primary chain adjustment.
Troubleshooting:
Comprehensive diagnostic flowcharts and problem-solving guides for common and uncommon issues across all vehicle systems.
Repair:
Step-by-step instructions for major repairs and component replacements, including engine disassembly/reassembly, transmission overhaul, suspension service, and electrical component repair.
Installation:
Guidance on installing aftermarket parts or specific OEM components.
Diagnostics:
Detailed electrical diagnostic procedures, including wiring diagrams, troubleshooting symptom-based issues, and using diagnostic tools.
Depth:
Expert-level, covering everything from routine maintenance to full engine and transmission rebuilds, including advanced electrical diagnostics.
Illustrations:
Includes detailed diagrams, part illustrations, and photographic examples to guide repairs.
Data Tables:
Extensive torque specifications, fluid capacities, wear limits, and other critical technical data.
Engine Type:
Air-cooled, 45-degree V-twin, pushrod overhead valves (OHV).
Displacement Standard:
1450cc (88 cubic inches)
Displacement Screamin Eagle:
1550cc (95 cubic inches) for FLHTCSE model.
Torque Twin Cam 88:
Approximately 86 ft-lbs @ 3200 RPM (for reference, actual values may vary by sub-model and tuning).
Horsepower Twin Cam 88:
Approximately 65-70 HP (for reference, actual values may vary).
Fuel Delivery Standard:
Carbureted (Keihin CV 40mm) for non-EFI models.
Fuel Delivery Efi:
Electronic Fuel Injection (EFI) with single injector for EFI models.
Ignition Type:
Distributorless Electronic Ignition (DEI) or Coil-Ignition (CI).
Audio System:
Factory-installed premium AM/FM/WB stereo with CD player and CB/Intercom (optional on some models, standard on Ultra Classic).
Controls:
Handlebar-mounted audio controls.
Cruise Control:
Electronic cruise control standard on most touring models.
Diagnostics Efi:
EFI models utilize an Engine Control Module (ECM) that can be accessed for diagnostics, error codes, and parameter adjustments.
Oil Change Interval:
Typically every 5,000 miles or 6 months, whichever comes first. Primary and transmission oil intervals may differ.
Spark Plug Replacement:
Approximately every 10,000-15,000 miles.
Brake Fluid Flush:
Recommended every 2 years.
Engine Oil Type:
Typically Harley-Davidson 20W50 (e.g., SYN3 or conventional) or equivalent API SG/SH/SJ certified motorcycle oil.
Engine Oil Capacity:
Approximately 4 US quarts (3.8 liters) with filter change.
Primary Chain Case Oil:
Harley-Davidson Primary Chain Lubricant or equivalent.
Transmission Oil:
Harley-Davidson Synthetic Transmission Fluid or equivalent.
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid.
Common Wear Items:
Clutch friction plates, primary chain tensioner, rear brake pads, wheel bearings, fork seals.
Potential Efi Issues:
Idle control issues, sensor failures (e.g., throttle position sensor), fuel injector clogging on EFI models.
Twin Cam Tensioner:
Early Twin Cam engines are known for wear on the plastic primary chain tensioner, which can lead to premature wear of the chain and other components. Later models received improved tensioners.
Legacy:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and cruiser styling.
Touring Lineage:
The Touring line evolved from earlier Electra Glide models, with significant updates including the introduction of the Twin Cam engine and advancements in comfort and technology.
Manufacturing Location:
United States