Target Audience:
Harley Davidson owners, independent repair shops, DIY mechanics
Value Proposition:
Provides comprehensive, factory-level repair information for a crucial period of the Softail Deluxe model, enabling owners to perform maintenance and repairs themselves, saving costs.
Content Emphasis:
Detailed step-by-step procedures, pictorial diagrams, exploded views, torque specifications, service data, and troubleshooting guides.
Engine:
Twin Cam 88, Twin Cam 88B (including carburetor and fuel injection systems, ignition, lubrication, cooling, exhaust)
Transmission:
5-speed Cruise Drive transmission (assembly, disassembly, adjustments, maintenance)
Drivetrain:
Primary drive, secondary belt drive, clutch, final drive system
Suspension:
Front fork (telescopic), rear Softail suspension system (shock absorbers, swingarm, linkage)
Brakes:
Front and rear brake systems (hydraulic, calipers, master cylinders, lines, pads, rotors)
Electrical:
Battery, charging system, starting system, lighting, ignition system, instrumentation, wiring diagrams, diagnostic codes
Fuel System:
Carburetor (CV carburetor) and Electronic Fuel Injection (EFI) systems, fuel pump, fuel filter, fuel lines
Bodywork Frame:
Frame, fenders, fuel tank, handlebars, seat, fairings (if applicable), body panels, mounting hardware
Maintenance:
Scheduled maintenance, oil changes, filter replacement, chain adjustment (if applicable), brake fluid flush, fork oil change, spark plug replacement
Troubleshooting:
Diagnostic procedures for common problems, fault code interpretation, symptom-based troubleshooting guides
Repair Overhaul:
Detailed step-by-step instructions for component removal, disassembly, assembly, and reinstallation
Adjustments:
Carburetor/EFI tuning, clutch adjustment, brake lever adjustment, suspension adjustments, idle speed adjustments
Special Tools:
Identification and usage of specialized tools required for specific repair operations
Depth:
Comprehensive, covering from routine maintenance to complete engine and transmission rebuilds
Diagnostics:
Detailed diagnostic flowcharts, electrical troubleshooting with wiring diagrams, EFI system diagnostics
Rebuild Procedures:
Complete engine and transmission overhaul procedures, including component specifications and tolerances
Engine Family:
Harley-Davidson Twin Cam 88 / Twin Cam 88B
Engine Displacement Cc:
1450cc (88 cubic inches)
Engine Configuration:
V-Twin, air-cooled
Bore X Stroke Mm:
3.75 in x 4.00 in (95.25 mm x 101.6 mm)
Horsepower Approx:
Approximately 60-65 HP (specific to tuning and model year)
Torque Approx:
Approximately 75-80 lb-ft (specific to tuning and model year)
Carburetor Model:
Keihin CV (Constant Velocity) carburetor (e.g., CV40) for some models/years
Efi System:
Electronic Fuel Injection (EFI) with single-port or multi-port injection systems for later models/options
Type:
5-speed Constant Mesh
Gear Ratios:
Specific ratios provided in manual (e.g., 1st: 9.312, 2nd: 6.495, 3rd: 4.765, 4th: 3.826, 5th: 3.152)
Availability:
N/A for this model range as standard
Clutch Type:
Wet, multi-plate, cable-operated
Transmission Fluid Spec:
Refer to manual for specific Harley-Davidson transmission fluids or equivalent SAE 75W-90 (GL-4)
Audio System:
Optional factory-fitted or aftermarket audio systems were available, often with handlebar-mounted controls and CD players.
Display:
Analog speedometer, tachometer, fuel gauge, and indicator lights.
Cruise Control:
Optional on some models within this range, requiring specific kits for installation.
Data Ports:
Diagnostic connectors for engine management system (e.g., for using proprietary diagnostic tools or tuning devices).
Oil Change Interval Km:
Typically every 8,000 km (5,000 miles) or 12 months, whichever comes first.
Transmission Fluid Change Km:
Refer to manual, often coincides with engine oil changes or specific mileage intervals (e.g., 16,000 km / 10,000 miles).
Primary Chain Case Fluid Change Km:
Refer to manual, often shared with transmission oil for these models.
Engine Oil Type:
Harley-Davidson SYN3 Full Synthetic SAE 20W-50 or equivalent air-cooled V-twin specific oils.
Engine Oil Capacity Liters:
Approximately 3.4 liters (3.6 US quarts) with filter change.
Brake Fluid Type:
DOT 4 (unless specified otherwise for specific components)
Cam Chain Tensioner Wear:
Early Twin Cam models (pre-2007) had hydraulic cam chain tensioners that could wear out, requiring replacement with updated components or conversion kits.
Crankshaft Position Sensor:
Potential failure can lead to no-start conditions or stalling.
Carburetor Issues:
CV carburetor can sometimes require adjustments for idle speed, mixture, or jetting depending on modifications or altitude.
Brand Philosophy:
American V-twin motorcycles, customization, freedom, lifestyle
Softail Design Origin:
Introduced in 1983, the Softail frame mimics the look of a hardtail frame with a hidden rear suspension system.
Flstn Introduction:
The FLSTN Softail Deluxe model itself evolved from earlier Softail models, often featuring a retro styling package.
Manufacturing Location:
United States (primarily York, Pennsylvania, and Milwaukee, Wisconsin)
