Positioning:
The Harley-Davidson Dyna series represents a line of motorcycles known for their V-twin engine performance, cruiser styling, and accessible handling, bridging the gap between the Sportster and Touring models.
Competitors:
Competes with models from Indian Motorcycle, Victory Motorcycles, and custom builds from other manufacturers in the cruiser and performance cruiser segments.
Engine Platform:
Twin Cam 96 (1584cc) V-twin engine with Electronic Fuel Injection (EFI).
Chassis Design:
Typically features a robust steel frame with dual rear shock absorbers, offering a planted and stable ride.
Rider Ergonomics:
Forward-mounted foot controls, a low seat height, and handlebars positioned for a comfortable, commanding riding posture.
Engine:
Engine assembly, disassembly, tuning, diagnostics, lubrication system, cooling system (air-cooled).
Transmission:
Clutch, gearbox, final drive, lubrication, diagnostics, repair procedures.
Fuel System:
Fuel injection (EFI) systems, throttle bodies, fuel pumps, fuel lines, fuel tanks, carburetors (if applicable to specific models), diagnostics.
Electrical System:
Ignition system, starting system, charging system, lighting, instrumentation, sensors, wiring diagrams, troubleshooting, battery maintenance.
Chassis:
Frame, front forks, rear suspension, steering system, wheels, tires, bearings.
Brakes:
Front and rear brake systems, hydraulic components, ABS (if equipped), disc and pad replacement, fluid bleeding, troubleshooting.
Bodywork:
Fenders, fuel tank, seat, fairings (if equipped), handlebars, controls, mounting hardware, cosmetic repair.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, brake checks, fluid checks, spark plug replacement.
Troubleshooting:
Diagnostic procedures for common issues, error code interpretation, symptom-based troubleshooting guides.
Repair:
Step-by-step instructions for component removal, installation, and overhaul of all major vehicle systems.
Diagnostics:
Engine diagnostics, electrical system diagnostics, fuel system diagnostics, using diagnostic tools (e.g., Digital Technician).
Specifications:
Torque specifications for all fasteners, clearances, fluid capacities, component tolerances.
Depth:
Comprehensive, covering from basic user maintenance to complete engine and transmission rebuilds.
Engine Type:
Air-cooled, 45-degree V-twin, pushrod actuated, four-stroke
Displacement:
96 cubic inches (1584cc)
Bore X Stroke:
3.75 in. x 4.38 in. (95.25 mm x 111.25 mm)
Horsepower:
Approx. 70-75 HP (varies slightly by model and tuning)
Torque:
Approx. 85-90 ft-lbs @ 3,500 RPM (varies slightly by model and tuning)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded gasoline, minimum 91 octane (R+M)/2
Oil Capacity:
3.0 US quarts (2.8 Liters) with filter change
Oil Type:
Harley-Davidson SYN3 20W-50 Synthetic Motorcycle Lubricant or equivalent API SG rated or higher.
Transmission Type:
6-speed constant mesh
Clutch Type:
Clutched, multi-plate, wet
Primary Drive:
Duplex chain, 34/46 ratio
Final Drive:
Belt drive, 32/66 ratio
Gear Ratios:
1st: 9.315, 2nd: 6.659, 3rd: 4.949, 4th: 3.827, 5th: 3.171, 6th: 2.716
Transmission Fluid Capacity:
2.5 US quarts (2.4 Liters)
Transmission Fluid Type:
Harley-Davidson Formula+ Transmission Lubricant or equivalent.
Length:
Approx. 90.5 in. (2299 mm) (varies by model)
Seat Height:
Approx. 26.7 in. (678 mm) (laden, varies by model)
Ground Clearance:
Approx. 4.1 in. (104 mm) (varies by model)
Dry Weight:
Approx. 600-650 lbs (272-295 kg) (varies by model)
Gvwr:
Not specified, but designed for rider and passenger plus cargo.
Payload Capacity:
Typically rated for approximately 400 lbs (181 kg).
Safety Certifications:
Meets or exceeds all applicable US federal motor vehicle safety standards for motorcycles.
ABS:
Available on select models (e.g., Street Bob, Fat Bob, Super Glide Custom) as an option.
Braking System:
Dual-action, four-piston front caliper with 300mm disc; dual-action, two-piston rear caliper with 292mm disc.
Lighting:
Halogen headlight, LED tail light and brake light, amber incandescent front and rear turn signals.
Frame Construction:
High-tensile steel, MIG-welded for strength and rigidity.
Audio System:
Optional Boom! Audio systems were available, often featuring AM/FM radio, CD player, and iPod integration for certain models. Standard models may not have integrated audio.
Display:
Analog speedometer with integrated digital display for odometer, trip meter, fuel gauge, and gear indicator.
ABS Availability:
Anti-lock Braking System (ABS) was an optional feature on many 2010 Dyna models.
Diagnostics Port:
A diagnostic connector (e.g., 4-pin) is present for connecting diagnostic tools like the Harley-Davidson Digital Technician.
Initial Service:
1,000 miles (1,600 km) or 12 months, whichever comes first.
Subsequent Service:
Every 5,000 miles (8,000 km) or 12 months, whichever comes first.
Engine Oil Change Interval:
Every 5,000 miles (8,000 km) or 12 months. Check level frequently.
Transmission Oil Change Interval:
Every 10,000 miles (16,000 km) or 24 months.
Primary Chain Case Oil Change Interval:
Every 10,000 miles (16,000 km) or 24 months.
Engine Oil Spec:
Harley-Davidson SYN3 20W-50 Synthetic Motorcycle Lubricant or API SG, Jaso MA certified 20W-50.
Transmission Fluid Spec:
Harley-Davidson Formula+ Transmission Lubricant or equivalent.
Primary Chain Case Fluid Spec:
Harley-Davidson Formula+ Transmission Lubricant or equivalent.
Brake Fluid Spec:
DOT 4 brake fluid.
Common Wear Items:
Clutch plates, brake pads, front fork seals, drive belt, wheel bearings due to mileage and usage.
Engine Performance Checks:
Regular checks for oil leaks, proper engine idle, and smooth acceleration are important due to the air-cooled nature of the engine.
Electrical System Checks:
Battery terminal connections, charging system output, and integrity of wiring harnesses should be periodically inspected.
Brand Legacy:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer with a rich history of producing powerful V-twin engines and distinctive cruiser motorcycles.
Dyna Lineage:
The Dyna platform, introduced in 1991, evolved from the earlier FXR models, offering a more rigid chassis and a larger engine displacement. It was known for its blend of classic styling and modern performance.
2010 Production Context:
The 2010 model year saw the Dyna lineup equipped with the prevalent Twin Cam 96 engine and EFI, solidifying its position in the Harley-Davidson range. Production for the Dyna line concluded with the 2017 model year, with many of its features and spirit incorporated into the new Softail platform.
