Market Segment:
Cruiser, Retro Classic
Target Audience:
Owners, independent repair shops, motorcycle enthusiasts seeking detailed maintenance and repair knowledge.
Competitors:
Other cruiser motorcycles from American V-twin manufacturers, as well as Japanese manufacturers offering similar styling and displacement.
Distinctive Elements:
Iconic Springer front fork, classic styling, comfortable cruiser ergonomics, V-twin engine heritage.
Manual Purpose:
To provide authoritative, step-by-step instructions for the diagnosis, repair, maintenance, and overhaul of the Harley-Davidson FLSTSI Heritage Springer ST.
Engine Mechanical:
Engine assembly, disassembly, inspection, torque specifications, timing, valve adjustments
Fuel System:
Carburetor (CV Carburetor), fuel delivery, fuel tank, fuel lines, fuel pump
Ignition System:
Ignition module, spark plugs, ignition coil, timing
Exhaust System:
Exhaust pipes, mufflers, mounting hardware
Transmission Drivetrain:
Clutch, transmission operation, gear shifting, primary drive, final drive (belt drive)
Electrical System:
Wiring diagrams, charging system (alternator, regulator/rectifier), starting system (starter motor, solenoid), battery, lighting, switches, gauges
Brakes:
Front and rear brake systems, hydraulic lines, calipers, master cylinders, brake pads, brake fluid specifications
Suspension:
Front fork (Springer fork), rear shock absorbers, suspension tuning, fork oil specifications
Wheels Tires:
Wheel bearing maintenance, tire pressure, tire specifications, wheel removal/installation
Frame Bodywork:
Frame inspection, body panel removal/installation, fenders, fuel tank mounting, seat mounting
Controls:
Handlebar controls, throttle, clutch lever, brake lever, foot controls
Diagnostics Troubleshooting:
Diagnostic procedures for common issues, symptom-based troubleshooting charts
Routine Maintenance:
Oil changes, filter replacements, lubrication, belt tension adjustment, battery checks
Major Repairs:
Engine rebuilding, transmission overhauling, fork rebuilds, brake system repairs
Electrical Repairs:
Component testing, wiring harness repairs, circuit diagnostics
Special Tools:
Identification and usage of Harley-Davidson specific tools
Depth:
Comprehensive, covering everything from basic maintenance to full engine and transmission rebuilds, including electrical schematics and diagnostic procedures.
Engine Type:
Air-cooled, 45-degree V-twin, OHV (Overhead Valve)
Displacement:
1450cc (88 cubic inches)
Bore X Stroke:
3.75 in x 4.00 in (95.25 mm x 101.6 mm)
Horsepower:
Approx. 60-65 HP (Varies by tuning and exhaust)
Torque:
Approx. 75-80 lb-ft @ 3200 RPM (Varies by tuning and exhaust)
Fuel Delivery:
Keihin CV (Constant Velocity) 40mm Carburetor
Fuel Type:
Unleaded Gasoline, Minimum 91 Octane Recommended
Oil Type:
Harley-Davidson SYN3 Synthetic V-Twin Motorcycle Oil or equivalent API SG, Jaso MA approved SAE 20W-50
Length:
Approx. 94.5 inches (2400 mm)
Width:
Approx. 38.0 inches (965 mm)
Height:
Approx. 56.0 inches (1422 mm)
Wheelbase:
Approx. 63.5 inches (1613 mm)
Dry Weight:
Approx. 650 lbs (295 kg)
Gross Vehicle Weight Rating Gvwr:
Approx. 1050 lbs (476 kg)
Fuel Capacity:
5.0 US gallons (18.9 L)
Oil Capacity:
3.5 US quarts (3.3 L) with filter change
Crash Test Ratings:
Motorcycles are not subjected to the same crash testing regimes as automobiles. Safety is primarily assessed through design, engineering, and rider experience.
Braking System:
Dual front disc brakes with 4-piston calipers, single rear disc brake with 2-piston caliper.
Lighting:
Halogen headlight, LED tail light, incandescent turn signals, brake light.
Frame Construction:
Steel tubing frame, designed for stability and rider comfort.
Ergonomics:
Designed for a relaxed riding posture, reducing rider fatigue.
Infotainment System:
Basic instrumentation: Speedometer, tachometer (optional or integrated), odometer, trip meter, fuel gauge, oil pressure indicator, neutral indicator, turn signal indicators.
Audio:
No integrated audio system from factory. Aftermarket options are common.
Driver Assistance Features:
N/A (This era of motorcycle predates modern driver assistance systems).
Connectivity Options:
N/A (No factory connectivity features).
First Service:
1000 miles (1600 km) or 6 months (whichever comes first) - includes oil and filter change, belt check, lubrication, inspection.
Subsequent Services:
Every 5000 miles (8000 km) or 12 months, including oil change, filter, lubrication, and comprehensive inspection.
Major Service:
Manual will specify intervals for transmission fluid, primary chaincase oil, brake fluid changes, and spark plug replacement (e.g., 10,000-20,000 miles).
Engine Oil:
Harley-Davidson SYN3 or SAE 20W-50 API SG, Jaso MA.
Primary Chaincase Fluid:
Harley-Davidson Primary Chaincase Lubricant or SAE 85W-140 gear oil.
Transmission Fluid:
Harley-Davidson Transmission Fluid or SAE 85W-140 gear oil.
Brake Fluid:
DOT 4 Hydraulic Brake Fluid.
Fork Oil:
Harley-Davidson Fork Oil or equivalent SAE 15W (refer to manual for precise weight and volume).
Common Wear Items:
Clutch plates, brake pads, tires, fork seals, spark plugs, drive belt.
Potential Maintenance Concerns:
Carburetor adjustment and cleaning, battery maintenance, carburetor jetting for altitude or modifications, charging system components (regulator/rectifier).
Springer Fork Specifics:
Regular inspection and lubrication of the Springer fork linkages and pivot points.
Brand History:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer with a rich legacy of V-twin engine motorcycles, customization, and a strong cultural identity.
Heritage Softail Lineage:
The Heritage Springer is part of the Softail family, known for its classic styling, concealed rear suspension, and historically, the distinctive Springer front fork, evoking the look of early motorcycles.
Production Period:
The Heritage Springer model was produced for a limited period, with the FLSTSI being a specific variant within that line. The 'ST' often denotes specific trim or styling packages.
Manufacturing Location:
United States