Market Segment:
Cruiser motorcycle segment, known for its classic styling, V-twin engine character, and customization potential. Competes with models from other American and Japanese manufacturers.
Key Competitors:
Indian Chief, Victory models, various Japanese cruisers (e.g., Honda Shadow, Yamaha V-Star, Kawasaki Vulcan).
Design Philosophy:
The Dyna platform emphasizes a traditional Harley-Davidson aesthetic with a focus on rider-bike connection, often featuring a more stripped-down or bobber-inspired look depending on the specific model. The 2009 models represent a mature iteration of the Twin Cam engine and chassis design.
Models Covered:
All Harley-Davidson Dyna models (e.g., Street Bob, Super Glide Custom, Fat Bob, Low Rider, Sportster - *Correction: Sportster is a different family, manual is for Dyna*) (Specific Dyna models typically include FXDC, FXDF, FXD, FXDB, FXDL)
Estimated Page Count:
Approximately 700-900 pages (typical for factory service manuals)
Manual Type:
Factory Service Repair Workshop Manual
Engine Service:
Engine overhaul, disassembly, assembly, cylinder head service, piston and rod service, crankshaft and flywheel service, timing systems, lubrication systems, cooling systems (air-cooled specific notes).
Fuel System:
Fuel injection system (EFI - Delphi Electronic Fuel Injection), throttle body, injectors, fuel pump, fuel filter, fuel tank, fuel lines, EVAP system.
Transmission And Drivetrain:
Primary drive system, clutch service, transmission case, gears, shafts, bearings, shift mechanism, final drive belt, belt tensioner, wheel bearings.
Electrical System:
Wiring diagrams, battery service, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), ignition system (coil, spark plugs, ECM), lighting (headlight, tail lights, turn signals), instrumentation, sensors, fuses, relays, horn, power commander interfaces (if applicable to stock).
Brake System:
Front and rear brake caliper service, master cylinders, brake lines, brake pads, brake fluid, rotor inspection and replacement, parking brake (if applicable).
Suspension And Steering:
Front fork (telescopic, cartridge type) disassembly, assembly, oil levels, seals. Rear shock absorber service and replacement. Steering head bearing service. Swingarm and pivot bearing service.
Chassis And Frame:
Frame inspection, mounting points, frame integrity checks. Bodywork removal and installation (fenders, fuel tank, side covers, seat, handlebars, mirrors).
Diagnostic Troubleshooting:
Step-by-step troubleshooting charts for common and uncommon issues, diagnostic codes (DTCs), sensor testing procedures, electrical continuity testing.
Routine Maintenance:
Oil changes, filter replacement, spark plug replacement, air filter cleaning/replacement, drive belt inspection and adjustment, brake pad inspection, tire pressure checks, chain lubrication/adjustment (if applicable - Dyna uses belt drive).
Repair And Rebuild:
Complete engine teardown and rebuild procedures, transmission overhaul, suspension component replacement, brake system bleeding and service, electrical component diagnosis and replacement.
Component Installation:
Instructions for installing common aftermarket parts or OEM replacements, torque specifications for all fasteners, alignment procedures.
Depth:
Comprehensive factory-level detail, suitable for professional technicians and advanced DIY mechanics. Includes detailed torque specifications, clearance measurements, and specialized tool recommendations.
Engine Type:
Air-cooled, 45-degree V-twin, pushrod actuated overhead valves.
Displacement:
96 cubic inches (1584cc)
Bore X Stroke:
3.75 in x 4.38 in (95.25 mm x 111.25 mm)
Torque Peak:
Approximately 92.6 ft-lbs (125.5 Nm) @ 3500 RPM (varies slightly by model and specific tuning)
Horsepower Peak:
Approximately 75 HP (56 kW) (estimated, official HP figures were not always prominently published)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI) - Delphi
Fuel Type:
Unleaded gasoline, minimum 89 octane (Octane Rating can vary by region, refer to manual for exact spec)
Oil Type:
Harley-Davidson Genuine V-Twin 20W-50 (or equivalent API CG-4 rated diesel engine oil, refer to manual for specific Harley-Davidson approval codes)
Transmission Type:
6-speed Cruise Drive
Gear Ratios:
1st: 9.312, 2nd: 6.405, 3rd: 4.755, 4th: 3.798, 5th: 3.273, 6th: 2.784 (Typical values, refer to manual for exact ratios per model)
Primary Drive:
Duplex chain, 34/46 ratio
Final Drive:
Belt drive, 32/65 ratio (1.84:1)
Clutch Type:
Wet, multi-plate, diaphragm spring
Transmission Oil Type:
Harley-Davidson Formula Plus (or SAE 75W-140 transmission lubricant - refer to manual for specific Harley-Davidson approved types)
Engine Oil Change:
Every 5,000 miles (8,000 km) or 12 months, whichever comes first. (Refer to manual for exact interval as it can depend on operating conditions).
Primary Chain Case Oil Change:
Every 10,000 miles (16,000 km) or 24 months.
Transmission Oil Change:
Every 10,000 miles (16,000 km) or 24 months.
Spark Plug Replacement:
Every 10,000 miles (16,000 km) (refer to manual for specific plug type and gap).
Drive Belt Inspection And Adjustment:
Inspect every 5,000 miles (8,000 km), adjust as needed. Replace belt tensioner at 15,000 miles (24,000 km).
Engine Oil Capacity:
Approximately 4.0 US quarts (3.8 L) with filter change (refer to manual for exact capacity).
Primary Chain Case Oil Capacity:
Approximately 1 US quart (0.95 L).
Transmission Oil Capacity:
Approximately 1 US quart (0.95 L).
Brake Fluid Type:
DOT 4 (refer to manual for specific Harley-Davidson approved fluid).
Cam Chain Tensioner Wear:
Early Twin Cam models (pre-2007) had hydraulic cam chain tensioners that were known to wear out. While the 2009 Twin Cam 96 uses improved tensioners, monitoring for noise is still prudent. Upgraded aftermarket tensioners are common.
Crankshaft Position Sensor:
Potential for failure leading to stalling or no-start conditions. Relatively easy replacement.
Voltage Regulator Rectifier:
Can fail, leading to charging system issues. Often replaced with more robust aftermarket units.
Brand Identity:
Iconic American motorcycle manufacturer renowned for its V-twin engines, distinctive styling, and a strong community culture.
Dyna Introduction:
The Dyna line was introduced in 1991, replacing the FXR line. It was characterized by its rubber-mounted engine for reduced vibration, offering a more comfortable ride than the rigid-mounted Big Twins.
Engine Progression:
The 2009 models featured the 96 cubic inch (1584cc) Twin Cam engine, which had been introduced in 2007, replacing the Evolution engine. This represented a significant update in terms of power and emissions compliance.
Manufacturing Location:
United States (primarily Milwaukee, Wisconsin and Kansas City, Missouri)