Target Audience:
Harley-Davidson Dyna owners, independent motorcycle mechanics, and service technicians.
Advantage Over Physical Manuals:
Easily accessible, searchable, portable, and can be viewed on multiple devices. No wear and tear compared to paper manuals.
Accessibility:
Immediate download and access to repair information.
Comprehensiveness:
Covers all major mechanical and electrical systems for the specified model year range.
Visuals:
Includes diagrams, illustrations, and potentially exploded views of components.
Engine Service:
Engine disassembly, assembly, overhaul, tuning, lubrication system, cooling system (air-cooled).
Fuel System:
Carburetor (Keihin CV) service, fuel tank, fuel lines, fuel pump operation (if applicable).
Ignition System:
Ignition timing, spark plugs, ignition coils, electronic control module (ECM) diagnostics.
Transmission And Drivetrain:
5-speed gearbox, primary drive, clutch service, final drive belt, chain adjustment (if applicable), transmission oil.
Electrical System:
Battery, charging system (alternator, regulator), starting system (starter motor, solenoid), lighting, instrumentation, fuses, relays, wiring diagrams.
Chassis And Suspension:
Frame inspection, front fork (telescopic), rear shock absorbers, steering head bearings, swingarm, wheel bearings.
Braking System:
Hydraulic brake system, front and rear calipers, master cylinders, brake lines, brake fluid specifications, pad replacement, bleeding procedures.
Wheels And Tires:
Wheel removal and installation, tire inspection and replacement, tire pressures, wheel balancing.
Bodywork And Fittings:
Fender removal, fuel tank mounting, seat installation, exhaust system service, handlebar replacement.
Routine Maintenance:
Oil changes, filter replacements, chain lubrication and adjustment, spark plug checks, brake fluid checks, air filter cleaning/replacement.
Troubleshooting Guides:
Diagnostic procedures for common starting, running, and electrical issues.
Component Overhaul:
Detailed step-by-step instructions for engine, transmission, and brake component rebuilds.
Electrical Diagnostics:
Troubleshooting electrical faults using wiring diagrams and diagnostic flowcharts.
Special Tool Requirements:
Identification and usage of specialized tools required for specific repair procedures.
Depth Of Information:
Comprehensive (covers everything from basic maintenance to complete engine and transmission rebuilds).
Diagnostic Level:
Advanced diagnostics, including troubleshooting charts and component testing procedures.
Repair Procedures:
Detailed, step-by-step repair instructions with torque specifications, clearances, and assembly sequences.
Engine Type:
Air-cooled, 45-degree V-twin, Evolution Engine
Displacement:
88 cubic inches (1442cc)
Bore X Stroke:
3.500 in x 4.429 in (88.9 mm x 112.5 mm)
Compression Ratio:
8.8:1 (typical for 2002 models)
Valve Train:
OHV, 2 valves per cylinder, pushrod actuated
Horsepower Estimated:
~65-70 HP (at crankshaft, depending on model variant and tuning)
Torque Estimated:
~75-80 ft-lbs (at crankshaft, depending on model variant and tuning)
Fuel Delivery:
Carbureted (Keihin 40mm CV - Constant Velocity)
Fuel Type:
Unleaded gasoline, minimum 87 octane
Oil Type:
Harley-Davidson Genuine V-Twin 20W-50, or equivalent API SG certified oil
Oil Capacity:
3.0 US quarts (2.8 liters) with filter change
Transmission Type:
5-speed constant mesh, helical gear
Gear Ratios Estimate:
1st: 9.315, 2nd: 6.432, 3rd: 4.743, 4th: 3.805, 5th: 3.104 (values are approximate and can vary slightly)
Primary Drive:
Duplex chain, 1.370:1 ratio
Final Drive:
Belt drive, 32/66 tooth sprockets, 3.15:1 ratio
Optional Gear Sets:
None from factory for this year; aftermarket options available.
Clutch Type:
Wet, multi-plate
Transmission Oil Type:
Harley-Davidson Genuine Formula +, or equivalent SAE 50 transmission oil
Transmission Oil Capacity:
2.5 US quarts (2.4 liters)
Crash Test Ratings:
Motorcycles are not typically rated by government agencies like NHTSA for crash safety in the same manner as cars.
Braking System:
Dual disc front brakes, single disc rear brake (standard on most models), hydraulic actuation.
Frame Construction:
Steel tubing frame designed for stability and rider feedback.
Lighting System:
Halogen headlamp, LED tail lamp, turn signals, brake light.
Audio System:
Optional factory or dealer-installed accessory audio systems were available, typically featuring AM/FM radio and cassette players, but not standard on all models.
ABS:
Anti-lock Braking System (ABS) was not a standard or widely available option on Dyna models in 2002. It became more common in later years.
Usb Ports:
Not applicable for this model year.
Dashboard Layout:
Analog speedometer on the handlebar-mounted dash, tachometer (on some models), odometer, trip meter, fuel gauge (often dash-mounted), indicator lights for turn signals, oil pressure, and neutral.
Initial Service:
1,000 miles (1600 km) - Oil change, primary chain tension adjustment, inspection of all major components.
Subsequent Oil Changes:
Every 5,000 miles (8,000 km) or annually, whichever comes first.
Primary Chain Tension Adjustment:
Every 5,000 miles (8,000 km)
Brake Fluid Flush Replacement:
Every 2 years, or as recommended by the manual, due to hygroscopic nature of DOT 4 fluid.
Engine Oil Spec:
Harley-Davidson Genuine V-Twin 20W-50 (or equivalent API SG/SH/SJ or higher)
Transmission Oil Spec:
Harley-Davidson Genuine Formula + (or equivalent SAE 50)
Primary Chain Case Oil Spec:
Harley-Davidson Genuine Formula + (or equivalent SAE 50)
Cam Chain Tensioners:
Early Evolution engines (pre-2007) are known for wear on the cam chain tensioner pads, which can lead to engine damage if not replaced proactively with improved designs.
Carburetor Tuning:
The Keihin CV carburetor can sometimes require fine-tuning or adjustment, especially with aftermarket exhaust or air cleaner modifications.
Primary Drive Chain Stretch:
Regular inspection and adjustment of the primary drive chain are crucial to prevent excessive wear and potential damage.
Founding:
Founded in 1903 in Milwaukee, Wisconsin, USA. Pioneered motorcycle manufacturing.
Dyna Line Introduction:
The Dyna family was introduced in 1991, featuring a new frame and rubber isolation for the powertrain, offering a smoother ride compared to earlier rigid-mount V-twins.
2002 Updates:
The 2002 models continued to utilize the 88 cubic inch Evolution engine and the robust frame design. Minor styling and component updates occurred across the model range.
Manufacturing Location:
USA (Milwaukee, Wisconsin; York, Pennsylvania)
Brand Awards:
Harley-Davidson has a long history of awards and recognition for its motorcycles, often lauded for their iconic styling, rider experience, and build quality.
Customer Satisfaction:
Generally high for the Harley-Davidson brand, particularly among dedicated enthusiasts, though specific model year ratings fluctuate.
Emissions Standards:
Certified to meet US EPA and California Air Resources Board (CARB) emissions standards for the model year.