Segment:
Cruiser Motorcycle
Target Audience:
Harley-Davidson Dyna owners, independent repair shops, motorcycle enthusiasts performing their own maintenance and repairs.
Competitors:
Other V-twin cruiser motorcycles from brands like Indian, and custom bike builders.
Engine Layout:
Air-cooled V-twin engine, known for its distinctive rumble and torque.
Styling:
Classic cruiser styling with a blend of retro and modern elements.
Handling:
Generally considered a stable and comfortable platform for cruising.
Engine Mechanical:
Complete engine overhaul, disassembly, assembly, inspection, and repair of all internal components (pistons, rings, cylinders, crankshaft, connecting rods, camshafts, valve train).
Fuel System:
Carburetor (Keihin CV) tuning, disassembly, cleaning, reassembly, jetting, fuel pump, fuel lines, fuel tank maintenance and repair.
Ignition System:
Ignition module, spark plugs, ignition coils, timing adjustments, troubleshooting.
Electrical System:
Wiring diagrams, charging system (stator, regulator/rectifier, battery), starting system (starter motor, solenoid), lighting, instrumentation, horn, accessory circuits.
Transmission Drivetrain:
5-speed constant mesh transmission disassembly, assembly, inspection, lubrication, clutch operation and adjustment, primary drive chain adjustment and inspection.
Suspension Steering:
Front fork (telescopic) overhaul, seal replacement, oil levels, rear shock absorber inspection and replacement, steering head bearing adjustment and replacement.
Braking System:
Front and rear brake caliper service, brake pad replacement, brake fluid flush and bleeding, master cylinder and slave cylinder inspection.
Wheel Tire Hub:
Wheel bearing inspection and replacement, axle maintenance, tire pressure recommendations, rim inspection.
Frame Bodywork:
Frame inspection, fender removal and installation, seat mounting, fuel tank removal and installation, exhaust system maintenance.
Maintenance:
Scheduled maintenance tasks, fluid changes (engine oil, primary oil, transmission oil), filter replacements, chain lubrication and adjustment, spark plug replacement, battery care.
Troubleshooting:
Diagnostic charts and procedures for common issues and symptoms related to engine performance, electrical faults, braking, and starting.
Repair Rebuild:
Step-by-step instructions for complete disassembly, repair, and reassembly of all major motorcycle components.
Adjustments:
Carburetor tuning, clutch adjustment, throttle cable adjustment, brake lever adjustment, steering head bearing adjustment.
Diagnosis:
Methods for identifying and rectifying malfunctions across all vehicle systems.
Detail Level:
Comprehensive, covering all aspects from basic routine maintenance to complete engine and transmission rebuilds.
Diagnostics Tools:
Specifications for required special tools and diagnostic equipment.
Torque Specifications:
Detailed torque values for all critical fasteners.
Clearances Tolerances:
Precise specifications for engine internal clearances and component tolerances.
Displacement:
1450cc (88 cubic inches)
Bore X Stroke:
3.75 in x 3.97 in (95.25 mm x 100.8 mm)
Valvetrain:
Pushrod-actuated overhead valves, 2 valves per cylinder
Cooling System:
Air-cooled
Horsepower:
Approx. 60-65 HP (manufacturer figures may vary slightly)
Torque:
Approx. 75-80 lb-ft @ 3500 RPM (manufacturer figures may vary slightly)
Fuel Delivery:
Keihin CV 40mm Carburetor
Fuel Type:
Unleaded gasoline, minimum 87 octane
Oil Type:
Harley-Davidson Genuine V-Twin Motorcycle Oil 20W-50 or equivalent SAE 20W-50 motorcycle oil meeting Harley-Davidson specifications.
First Service:
1000 miles (1600 km) or 6 months, whichever comes first (includes oil change, filter change, primary chain adjustment, check for loose fasteners).
Subsequent Service:
Every 5000 miles (8000 km) or 12 months, whichever comes first. Includes engine oil and filter change, primary chain adjustment, inspection of brakes, tires, and other critical components.
Spark Plug Replacement:
Generally recommended every 10,000-15,000 miles (16,000-24,000 km), but refer to manual for specific type and interval.
Engine Oil Capacity:
Approx. 4 quarts (3.8 liters) with filter change.
Primary Chaincase Oil Capacity:
Approx. 1 quart (0.95 liters).
Transmission Oil Capacity:
Approx. 24 US fl oz (0.71 liters).
Brake Fluid Type:
DOT 4 brake fluid.
Cam Chain Tensioners:
Early Twin Cam engines (pre-2007) had plastic cam chain tensioners that could wear prematurely. Upgrade to hydraulic tensioners is a common modification.
Oil Leaks:
Common leak points include primary cover gasket, transmission side cover gasket, and pushrod tube seals.
Regulator Rectifier Failure:
Can be prone to failure, leading to charging system issues.
Brand Legacy:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and cruiser motorcycle lineage.
Dyna Series Introduction:
The Dyna platform was introduced in 1991, featuring a rubber-mounted engine for reduced vibration compared to earlier rigid-mount models.
Twin Cam 88 Introduction:
The Twin Cam 88 engine was introduced in 1999, replacing the Evolution (Evo) engine, offering increased displacement and improved performance.
Manufacturing Location:
United States
