Segment:
Cruiser Motorcycle
Target Audience:
Harley-Davidson owners, independent repair shops, DIY enthusiasts.
Key Competitors:
Other American V-twin cruisers, Japanese cruiser offerings.
Vehicle Philosophy:
Emphasis on classic styling, V-twin character, and customization potential.
Manual Advantage:
Provides detailed, manufacturer-specific information essential for proper maintenance and repair, superior to generic online resources.
Engine Coverage:
All 2008 Dyna models, including Twin Cam 96 (1584cc) engine variants.
Transmission Coverage:
Cruise Drive 6-speed transmission.
Chassis Coverage:
Frame, suspension (front forks and rear shocks), wheels, tires, brakes (front and rear disc), steering.
Electrical Coverage:
Wiring diagrams, battery, charging system, ignition system, lighting, starter, instrumentation, security system.
Bodywork Coverage:
Fuel tank, fenders, seat, handlebars, controls, exhaust system, minor body panel repairs.
Estimated Pages:
Approx. 700-900 pages (typical for comprehensive service manuals of this era).
Type:
Service and Repair Manual
Engine Systems:
Engine disassembly/assembly, cylinder heads, pistons, crankshaft, camshafts, valve train, oil pump, cooling system (air-cooled), fuel injection system (EFI).
Transmission Systems:
Gearbox disassembly/assembly, clutch, final drive belt, primary drive.
Suspension Systems:
Front fork service (oil change, seal replacement), rear shock absorber replacement.
Braking Systems:
Brake caliper service, rotor replacement, master cylinder overhaul, brake fluid bleeding.
Electrical Systems:
Starter motor testing, alternator testing, ignition timing, battery maintenance, troubleshooting wiring faults.
Maintenance Procedures:
Oil and filter changes, spark plug replacement, air filter service, belt inspection and tensioning, brake fluid flush, battery care.
Repair Procedures:
Engine rebuild, transmission overhaul, fork seal replacement, brake pad/rotor replacement, electrical component testing and replacement.
Troubleshooting:
Diagnosis of common running issues, electrical faults, starting problems, braking system anomalies.
Diagnostic Procedures:
Diagnostic codes (if applicable for the era), electrical circuit testing, fuel system pressure checks.
Depth:
Comprehensive: Covers everything from basic scheduled maintenance to complete engine and transmission overhauls, including detailed troubleshooting guides and wiring diagrams.
Engine Type:
Air-cooled, 45-degree V-twin
Engine Family:
Twin Cam 96
Displacement:
1584 cc (96 cubic inches)
Bore X Stroke:
3.75 in. x 4.48 in. (95.25 mm x 113.8 mm)
Horsepower:
Approx. 70-75 HP (at crank, estimated)
Torque:
Approx. 90-95 ft-lbs (at crank, estimated)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Premium Unleaded Gasoline
Transmission Type:
Cruise Drive 6-speed constant mesh
Optional Transmission:
N/A (Standard 6-speed for 2008 Dyna)
Gear Ratios:
Detailed in manual (e.g., 1st: 9.312, 2nd: 6.650, 3rd: 4.942, 4th: 3.720, 5th: 3.208, 6th: 2.790)
Clutch Type:
Wet, multi-plate, 10-plate
Final Drive:
49-tooth, 1.5-inch wide belt drive
Length:
Varies by specific Dyna model (e.g., Super Glide, Low Rider, Fat Bob), typically around 91.9 in. (2334 mm)
Wheelbase:
Varies by specific Dyna model, typically around 63.2 in. (1605 mm)
Dry Weight:
Varies by specific Dyna model, typically around 640-680 lbs (290-308 kg)
Gross Vehicle Weight Rating:
Specified by model, typically around 1100 lbs (499 kg)
Crash Test Ratings:
Motorcycles are not typically rated by standardized crash test agencies like NHTSA for cars.
Braking System:
Dual-action, front and rear hydraulic disc brakes.
Suspension:
Telescopic fork (front), Twin shocks with adjustable preload (rear) for stability and handling.
Lighting:
Halogen headlight, taillight, brake lights, turn signals.
Ignition System:
Electronic ignition for reliable starting and running.
Audio System:
Optional factory radio or aftermarket integration (not standard on all models).
Display:
Analog speedometer and tachometer, smaller LCD for odometer, trip meters, clock.
ABS:
Anti-lock Braking System (ABS) was an optional feature for some 2008 Dyna models.
Smart Phone Integration:
Not applicable for the 2008 model year.
Oil Change Interval:
Every 5,000 miles (8,000 km) or annually, whichever comes first.
Primary Chain Tensioner Inspection:
Inspect at 10,000 miles (16,000 km) and every 10,000 miles thereafter.
Spark Plug Replacement:
Every 10,000 miles (16,000 km).
Brake Fluid Flush:
Every 2 years.
Engine Oil Type:
Harley-Davidson SYN3 (Synthetic) SAE 20W50 or equivalent API approved oil.
Engine Oil Capacity:
Approx. 4 quarts (3.8 liters) with filter change.
Primary Chain Case Oil:
Harley-Davidson Primary Chain Case Lubricant (Formula+ Transmission & Primary Chain Case Lubricant) or equivalent.
Primary Chain Case Oil Capacity:
Approx. 1 quart (0.95 liters).
Transmission Oil Type:
Harley-Davidson Formula+ Transmission & Primary Chain Case Lubricant or equivalent.
Transmission Oil Capacity:
Approx. 24 fluid ounces (0.7 liters).
Brake Fluid:
DOT 5.1 Silicone-based fluid (though some models may specify DOT 4 depending on caliper design; always verify with manual).
Primary Chain Tensioner:
Hydraulic tensioner wear leading to noise or potential failure; upgrade to an improved or manual tensioner is common.
Cam Chain Tensioner Wear:
Early Twin Cam models (pre-2007) had plastic tensioners prone to wear; 2008 models use improved hydraulic tensioners but still require monitoring.
Lean Angle:
Limited lean angle on some Dyna models can lead to peg or frame contact during aggressive cornering.
Vibration:
While rubber-mounted, some vibration is characteristic of V-twins; severe vibration can indicate mounting issues.
Manufacturer History:
Harley-Davidson Motor Company, founded in 1903, is an iconic American motorcycle manufacturer with a rich history in V-twin engines and cruiser culture.
Dyna Lineage:
The Dyna line, introduced in 1991, bridged the gap between the softer styling of the previous FXR and the larger Touring models, featuring a rubber-mounted engine for reduced vibration.
Production Years:
Dyna models were produced from 1991 to 2017.
2008 Significance:
The 2008 model year featured the introduction of the Twin Cam 96 engine as standard across most Dyna models, replacing the previous Twin Cam 88.
Industry Acclaim:
Harley-Davidson consistently ranks high in owner satisfaction for its iconic styling and customization potential. The Dyna platform is known for its performance and versatility within the cruiser segment.
Owner Reviews:
Generally positive, praising the engine power, handling for its class, and the inherent 'Harley' experience.
