Market Position:
Iconic cruiser motorcycle, known for its distinctive springer front fork and custom styling.
Competitors:
Other American V-twin cruisers from brands like Indian, and custom motorcycle builders.
Key Features:
Softail chassis with hidden rear suspension, Harley-Davidson Twin Cam 88B engine, EFI, springer front end, custom aesthetics.
Target Audience:
Harley-Davidson owners, custom bike enthusiasts, DIY mechanics, and professional motorcycle technicians.
Engine Systems:
Engine disassembly, assembly, tuning, fuel injection (EFI), ignition system, lubrication system, cooling system, exhaust system.
Drivetrain Systems:
Clutch, transmission (5-speed Cruise Drive), final drive, primary drive, belt drive system.
Chassis Systems:
Frame, suspension (front springer fork, rear shock absorbers), wheels, tires, steering, brakes (front and rear hydraulic disc), swingarm.
Electrical Systems:
Ignition system, charging system, starting system, lighting, instrumentation, wiring diagrams, diagnostic codes, battery maintenance.
Bodywork And Trim:
Fenders, fuel tank, seat, handlebars, controls, mirrors, side covers, chrome components.
Maintenance Procedures:
Routine maintenance checks, oil changes, filter replacements, spark plug service, brake fluid flush, clutch adjustment, belt tensioning.
Repair Procedures:
Component-level repair and overhaul for engine, transmission, suspension, brakes, electrical components, and fuel system.
Troubleshooting:
Diagnostic procedures for common and uncommon problems, symptom-based troubleshooting, electrical diagnostic flowcharts.
Technical Data And Specs:
Torque specifications, clearances, adjustments, fluid capacities, electrical component specifications, part numbers.
Depth:
Comprehensive: Covers everything from basic maintenance to full engine rebuilds and electrical system diagnostics.
Engine Type:
Air-cooled, 45-degree V-twin, pushrod actuated valves
Engine Family:
Twin Cam 88B (Balanced)
Displacement:
1450 cc (88 cubic inches)
Bore X Stroke:
3.75 in. x 4.00 in. (95.25 mm x 101.60 mm)
Compression Ratio:
8.8:1 (typical for Twin Cam 88B)
Horsepower:
Approx. 65-70 HP (estimated, varies with tuning)
Torque:
Approx. 75-80 lb-ft @ 3200 RPM (estimated)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded Premium Gasoline (91 Octane or higher recommended)
Ignition Type:
Electronic Ignition with Knock Sensor
Oil Type:
Harley-Davidson 20W-50 Premium Motorcycle Oil or equivalent
Oil Capacity:
Approx. 3.5 US quarts (3.3 liters) with filter change
Transmission Type:
5-speed Cruise Drive, Constant Mesh
Clutch Type:
Wet, multi-plate
Primary Drive:
49-tooth, 1.625 inch wide, carbon reinforced primary drive belt
Final Drive:
66-tooth, 1.625 inch wide, carbon reinforced final drive belt
Transmission Fluid:
Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant or equivalent
Transmission Fluid Capacity:
Approx. 20-24 US fluid ounces (0.6-0.7 L)
Length:
Approx. 93.5 in. (2375 mm)
Width:
Approx. 33.5 in. (851 mm)
Height:
Approx. 53.0 in. (1346 mm) (seat height varies with rider weight)
Dry Weight:
Approx. 655 lbs (297 kg)
Gross Vehicle Weight Rating Gvwr:
Approx. 1075 lbs (488 kg)
Fuel Capacity:
5.0 US gallons (19 L)
Safety Ratings:
N/A (Motorcycle safety is generally evaluated through independent rider skill and machine handling characteristics rather than crash test ratings like cars).
Active Safety:
Hydraulic disc brakes (front and rear), responsive steering, stable chassis design.
Passive Safety:
Robust frame construction, rider control inputs, headlight and taillight for visibility.
Infotainment System:
Basic instrumentation: speedometer, tachometer (often optional or integrated), odometer, trip meter, fuel gauge, indicator lights. No advanced infotainment typically found on this model year.
Engine Management System:
Harley-Davidson Engine Control Module (ECM) managing fuel injection, ignition timing, and idle speed.
Initial Service:
1000 miles (1600 km) or 6 months
Subsequent Service:
Every 5000 miles (8000 km) or 12 months
Oil Change Interval:
Every 2500-5000 miles (4000-8000 km) or as per manual recommendations
Engine Oil Spec:
Harley-Davidson 20W-50 Premium Motorcycle Oil
Primary Chaincase Oil Spec:
Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant
Transmission Oil Spec:
Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant
Fork Oil Spec:
Refer to manual for specific weight and type (e.g., 10W or 15W)
Common Issues:
Potential for starter solenoid issues, charging system components (stator/regulator), exhaust leaks at headpipes, and occasional carburetor (if applicable, though this is EFI) or fuel injection system tuning nuances. Check for oil leaks around the engine seals.
Maintenance Notes:
Regularly check belt tension and condition. Inspect brakes for wear and proper fluid levels. Ensure all fasteners are torqued to specification.
Brand Heritage:
Founded in 1903, Harley-Davidson is an iconic American motorcycle manufacturer renowned for its V-twin engines and distinctive styling.
Softail Evolution:
The Softail line, introduced in 1984, mimics the look of a hardtail frame while incorporating under-seat shock absorbers for a smoother ride. The Springer variant adds the iconic springer front fork.
Production Period Fxstsi:
The FXSTSI model was part of the Softail line produced from the early 2000s, with the 2005 model year featuring the Twin Cam 88B engine and EFI.
