Segment:
Cruiser Motorcycle
Target Audience:
Harley-Davidson owners, mechanics, and enthusiasts seeking detailed repair and maintenance information.
Competitors:
Other cruiser manufacturers such as Indian Motorcycle, Victory Motorcycles (prior to discontinuation), and Japanese cruisers (e.g., Yamaha Star, Honda Shadow).
Styling:
Retro-inspired bobber styling, chrome accents, tall handlebars (T-bars), side-mount license plate, and a peanut-style fuel tank, reminiscent of 1950s choppers.
Engine Type:
Air-cooled, Evolution V-twin engine, a staple of the Sportster line.
Handling:
Known for its nimble handling characteristics, making it suitable for urban riding and twisty roads.
Systems Covered:
Engine, Transmission, Drivetrain, Fuel System, Electrical System, Ignition System, Lighting System, Braking System, Suspension System, Frame, Bodywork, Controls, Wheels and Tires, Troubleshooting, Maintenance
Pages:
Comprehensive (Estimated 500-800 pages based on typical Harley-Davidson service manuals)
Type:
Service Repair Workshop Manual
Engine Mechanical:
Complete disassembly and reassembly of the Evolution 1200cc V-Twin engine, including top-end (cylinder heads, valves, camshafts), bottom-end (crankshaft, connecting rods, pistons), and timing components.
Fuel System:
Detailed procedures for fuel injection system (EFI) components, fuel pump, fuel filter, throttle body, sensors, and fuel tank servicing.
Ignition System:
Ignition module, spark plugs, ignition coils, and related wiring diagnostics and replacement.
Transmission Drivetrain:
Clutch system, transmission gears, shift mechanism, primary drive system (chain, clutch, compensator), and final drive belt inspection, adjustment, and replacement.
Electrical System:
Battery, charging system (stator, voltage regulator), starting system (starter motor, solenoid), lighting (headlight, taillight, turn signals), horn, instrument cluster, and related wiring diagrams.
Braking System:
Front and rear brake caliper service, brake pads, brake lines, master cylinders, brake fluid replacement, and bleeding procedures.
Suspension System:
Front fork (telescopic forks) disassembly, service, oil replacement, and rear shock absorber replacement and adjustment.
Frame Bodywork:
Frame inspection, front fender, rear fender, fuel tank removal and installation, seat assembly, and handlebar servicing.
Routine Maintenance:
Oil and filter changes, air filter replacement, spark plug inspection and replacement, belt tension checks and adjustments, brake fluid checks and flushes, tire pressure checks.
Troubleshooting:
Diagnostic procedures for common starting issues, engine performance problems, electrical faults, and braking system malfunctions, often with flowcharts.
Repair Overhaul:
Step-by-step instructions for component removal, repair, replacement, and reassembly for all major vehicle systems.
Technical Specifications:
Detailed torque specifications for all fasteners, clearances, fluid capacities, electrical system voltages, and performance specifications.
Depth:
Comprehensive. Covers everything from basic owner maintenance to complete engine and transmission rebuilds, including advanced diagnostics and electrical troubleshooting.
Displacement:
73.4 cu in (1202 cc)
Configuration:
45-degree V-twin
Bore X Stroke:
3.437 in x 4.000 in (87.1 mm x 101.6 mm)
Cooling System:
Air-cooled
Valve Train:
Overhead valves (OHV) with two valves per cylinder, pushrod actuated.
Horsepower Est:
Approx. 67 hp @ 5750 rpm (Note: Harley-Davidson rarely quotes official horsepower figures, this is an industry estimate).
Torque Est:
Approx. 71 lb-ft @ 3500 rpm (Note: Harley-Davidson rarely quotes official torque figures, this is an industry estimate).
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Fuel Capacity:
2.1 US gallons (7.9 liters)
Engine Oil Change:
Every 5,000 miles (8,000 km) or annually, whichever comes first.
Primary Chain Case Oil Change:
Every 10,000 miles (16,000 km).
Transmission Oil Change:
Every 20,000 miles (32,000 km).
Air Filter Inspection:
Every 5,000 miles (8,000 km) or if performance is affected.
Spark Plug Inspection:
Every 10,000 miles (16,000 km).
Belt Drive Tension Check:
Every 5,000 miles (8,000 km).
Engine Oil:
Harley-Davidson V-Twin 20W-50 (or equivalent API CI-4 or higher)
Engine Oil Capacity:
3.0 US quarts (2.8 liters) with filter change
Primary Chain Case Fluid:
Harley-Davidson Formula+ (or equivalent SAE 50 primary lubricant)
Primary Chain Case Fluid Capacity:
2.7 US quarts (2.5 liters)
Transmission Fluid:
Harley-Davidson Transmission, Primary Chain Case, and Gear Oil (or equivalent SAE 80W-90 hypoid gear oil)
Transmission Fluid Capacity:
24 US fluid ounces (0.71 liters)
Brake Fluid:
DOT 4 (for front and rear brake systems)
Timing Chain Tensioner:
Early Sportster models (prior to 2007) had less durable hydraulic tensioners that could fail. The 2013 model uses a more robust spring-loaded tensioner, but inspection for wear is still relevant.
Clutch Actuation:
Some owners report a stiff clutch lever; this is often normal for cable-actuated clutches but can be exacerbated by worn components or incorrect lubrication.
Rear Fender Vibration:
Due to the bobber styling with a minimalist rear fender, vibration can sometimes cause paint wear or stress on mounting points. Proper torque and inspection of fender mounting hardware are important.
Brand Origin:
Founded in 1903 in Milwaukee, Wisconsin, USA. Known for iconic V-twin engines and a distinct American motorcycle culture.
Sportster Lineage:
The Sportster line, first introduced in 1957, is Harley-Davidson's longest-running model line. It has evolved from a lightweight, sporty bike to a versatile platform with various engine sizes and styling cues.
Seventy Two Introduction:
The Seventy-Two model was introduced for the 2012 model year, paying homage to the custom chopper culture of the 1970s. The 2013 model continued this theme.
Assembly Location:
Milwaukee, Wisconsin, USA (or other Harley-Davidson assembly plants)