Motorcycle Segment:
Cruiser
Target Audience:
Harley-Davidson Dyna owners seeking to perform maintenance, repairs, and customization.
Competitors 2008:
Indian Chief, Victory Kingpin, Honda Shadow, Yamaha V-Star, Suzuki Boulevard.
Drivetrain Philosophy:
Characterized by V-twin engine torque and classic cruiser styling.
Manual Value Proposition:
Provides essential technical data and procedures to maintain or repair a 2008 Harley-Davidson Dyna, empowering owners and independent shops.
Engine:
Engine disassembly, assembly, tuning, troubleshooting, oil system, cooling system (if applicable), ignition system, fuel system.
Transmission:
Transmission disassembly, assembly, maintenance, troubleshooting, gear selection, clutch operation.
Chassis:
Frame, suspension (front fork, rear shocks), swingarm, steering assembly, wheel bearings.
Brakes:
Brake system inspection, maintenance, repair, bleeding, caliper service, master cylinder service, ABS (if equipped).
Electrical:
Wiring diagrams, battery, charging system (stator, regulator/rectifier), starting system, lighting, instrumentation, ignition module, diagnostic codes.
Fuel System:
Fuel injection system (EFI) components, fuel pump, injectors, sensors, carburetor (if applicable for certain models), fuel tank.
Exhaust:
Exhaust system components, mufflers, headers, emissions control (if applicable).
Bodywork:
Fenders, tanks, fairings (if equipped), seating, controls, mirrors, trim.
Maintenance:
Oil changes, filter replacements, spark plug service, chain adjustment, brake fluid flush, tire pressure checks, lubrication.
Troubleshooting:
Diagnostic procedures for common starting, running, and electrical issues.
Repair:
Detailed step-by-step instructions for component replacement and repair across all systems.
Rebuild:
Complete engine and transmission rebuild procedures, including specifications for internal components.
Special Tools:
Identification and usage instructions for specialized Harley-Davidson tools required for specific tasks.
Depth:
Comprehensive (covers basic maintenance to full engine/transmission rebuilds and advanced diagnostics).
Engine Family:
Twin Cam 96
Engine Type:
Air-cooled, 45-degree V-twin
Displacement:
1584 cc (96 cubic inches)
Bore X Stroke:
3.75 in x 4.38 in (95.25 mm x 111.25 mm)
Horsepower:
Approx. 65-70 HP (at crank, varies by model and tuning)
Torque:
Approx. 85-90 lb-ft (at crank, varies by model and tuning)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded gasoline, minimum 87 octane
Oil Type:
Harley-Davidson SYN3 Synthetic (or equivalent V-twin specific synthetic, SAE 20W-50 recommended)
Oil Capacity:
Approximately 4 quarts (3.8 liters) with filter change
Type:
6-speed constant mesh, helical gears
Clutch:
Clutched, wet multi-plate
Primary Drive:
Duplex chain
Gear Ratios:
Specific ratios detailed in manual (e.g., 1st: 9.312, 2nd: 6.473, 3rd: 4.792, 4th: 3.832, 5th: 3.220, 6th: 2.790)
Transmission Fluid:
Harley-Davidson Formula+ Transmission & Primary Chaincase Lubricant (or equivalent SAE 50 motorcycle oil)
Transmission Fluid Capacity:
Approximately 1 quart (0.95 liters)
Length:
Varies by specific Dyna model (e.g., Super Glide, Low Rider, Street Bob) - typically 90-93 inches.
Wheelbase:
Varies by specific Dyna model - typically 63.5-64.4 inches.
Dry Weight:
Varies by specific Dyna model - typically 600-650 lbs.
Gross Vehicle Weight Rating:
Varies by specific Dyna model - typically around 1000-1050 lbs.
First Service:
Typically at 1,000 miles or 1 month (whichever comes first) for initial check and oil change.
Subsequent Oil Change:
Every 5,000 miles or 6 months, whichever comes first.
Belt Inspection Tension:
Inspect at 5,000-mile intervals; adjust as needed per manual specifications.
Spark Plug Replacement:
Typically at 10,000-15,000 miles, depending on plug type.
Primary Chaincase Fluid:
Harley-Davidson Formula+ or SAE 50 motorcycle oil
Transmission Fluid:
Harley-Davidson Formula+ or SAE 50 motorcycle oil
Crankshaft Pin Issue:
Some early Twin Cam models experienced issues with the crankshaft pin, though by 2008 this was generally improved. Manual will cover inspection and potential remedies.
Cam Chain Tensioners:
While later models went to hydraulic tensioners, earlier ones had spring-loaded tensioners that could wear. Manual will detail inspection and replacement.
Oil Leaks:
Common areas for leaks include primary and transmission seals, and rocker box gaskets. Manual provides procedures for seal replacement.
Founding:
Founded in 1903 in Milwaukee, Wisconsin.
Iconic Status:
One of the oldest motorcycle manufacturers with a strong cultural identity.
Dyna Introduction:
The Dyna family was introduced in 1991, evolving from earlier Harley-Davidson models.
Twin Cam Introduction:
The Twin Cam engine was introduced in 1999, replacing the Evolution Big Twin engine, and became standard across most Harley-Davidson models by 2000.
Manufacturing Location:
United States (Milwaukee, Wisconsin and other facilities).
Dyna Discontinuation:
The Dyna line was discontinued after the 2017 model year, replaced by the Softail chassis.
