Market Segment:
Cruiser/Performance Motorcycle
Target Audience:
Harley Davidson DYNA Evolution owners, independent repair shops, DIY enthusiasts
Key Value Proposition:
Provides essential, in-depth technical information for maintaining and repairing a specific and popular era of Harley Davidson motorcycles
Manual Features:
Complete coverage, detailed diagrams, torque specifications, troubleshooting, professional language
Primary Coverage:
Comprehensive service and repair for Harley Davidson DYNA Evolution motorcycles
Component Coverage:
Engine, transmission, drivetrain, chassis, suspension, brakes, electrical system, fuel system, exhaust system, bodywork, controls, accessories
Estimated Page Count:
High (Specific count not provided, but described as COMPLETE)
Type:
Service Repair Manual
Format:
Print / Digital (Likely PDF based on typical sales)
Engine Systems:
Engine assembly, disassembly, rebuild procedures, ignition system, carburetor/fuel injection tuning, lubrication, cooling (air-cooled)
Transmission Drivetrain:
Primary drive, transmission disassembly and assembly, final drive belt maintenance and adjustment, clutch operation
Chassis Suspension:
Frame, front fork service (including oil changes and seal replacement), rear shock absorber replacement, wheel bearing service, steering head bearing adjustment
Braking Systems:
Front and rear brake caliper service, master cylinder rebuild, brake fluid flush and bleed procedures, brake pad replacement
Electrical System:
Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), lighting circuits, starter motor, ignition switch, diagnostic troubleshooting
Maintenance Procedures:
Routine service, oil changes, filter replacement, spark plug service, chain/belt adjustment, brake inspection, tire pressure checks
Repair Procedures:
Complete tear down and rebuild, component replacement, troubleshooting guides, diagnostic procedures
Diagnostic Troubleshooting:
Fault finding for common issues, diagnostic codes (if applicable to the era), electrical system troubleshooting charts
Depth Of Coverage:
Complete from basic maintenance to engine rebuilds and in-depth electrical diagnostics
Visual Aids:
Includes pictures and part diagrams for clarity
Data Availability:
Torque specifications, fluid capacities, alignment procedures
Digital Format Quality:
Likely high-resolution PDF with searchable text and vector diagrams (if available)
Print Quality:
Professional printing, clear diagrams and text (for physical copies)
Binding:
Durable binding suitable for workshop use (e.g., spiral bound, perfect bound)
Paper Type:
Durable, high-quality paper stock resistant to shop grime
Engine Type:
Harley Davidson Evolution V-Twin (Big Twin)
Engine Displacement Variants:
Typically 1340cc (82 cubic inches). Early models and some variants may have 1200cc (74 cubic inches) although less common for this DYNA era.
Engine Configuration:
Air-cooled, 45-degree V-twin, pushrod-actuated overhead valves
Bore X Stroke:
Refer to specific model year for exact figures, but typically around 3.4375 in x 4.25 in (87.31 mm x 107.95 mm) for 1340cc
Compression Ratio:
Varies by model and tuning, but generally around 8.5:1 to 9.2:1
Horsepower:
Typically in the 60-70 HP range, depending on year and specific model tuning.
Torque:
Typically in the 75-85 lb-ft range, depending on year and specific model tuning.
Fuel Delivery Early Models:
Keihin CV carburetor (Constant Velocity)
Fuel Delivery Later Models:
Early Electronic Fuel Injection (EFI) systems may be present on later models within this range, depending on specific market and variant.
Fuel Type:
Unleaded gasoline, 91 octane or higher recommended.
Transmission Type:
5-speed constant mesh, manual gearbox
Gear Ratios:
Specific ratios vary by model year and transmission type, detailed in the manual.
Clutch Type:
Wet, multi-plate clutch
Final Drive:
Enclosed chain drive or, more commonly on DYNA models of this era, a carbon fiber reinforced belt drive.
Wheelbase:
Varies by specific DYNA model (e.g., Super Glide, Wide Glide, Low Rider), typically around 63-65 inches.
Dry Weight:
Varies by model, generally in the range of 580-620 lbs (263-281 kg).
Gross Vehicle Weight Rating Gvwr:
Refer to specific model specifications, typically around 900-1000 lbs (408-454 kg).
Safety Standards:
Meets relevant DOT and NHTSA standards for motorcycles of its era.
Braking System:
Dual disc front brakes, single disc rear brakes (most models). ABS was not a common feature on models of this vintage.
Lighting:
Halogen headlight, LED or incandescent tail/brake lights, turn signals.
Audio Systems:
Optional accessory audio systems and fairing-mounted radios were available on some DYNA models.
ABS:
Not standard, and generally not available on most DYNA models within this year range.
Diagnostic Tools:
On-board diagnostics were basic during this period, with most troubleshooting relying on multimeter testing and visual inspection, as detailed in the manual.
Initial Service:
Typically at 1,000 miles (1,600 km).
Regular Maintenance:
Annually or every 5,000 miles (8,000 km), whichever comes first. Specific intervals for oil changes, filter replacements, and inspections detailed in the manual.
Engine Oil Type:
Harley Davidson 20W50 motorcycle oil (or equivalent meeting Harley Davidson specification).
Engine Oil Capacity:
Refer to specific model year; typically around 3.5 US quarts (3.3 Liters) with filter change.
Transmission Oil Type:
Harley Davidson Transmission & Primary Chaincase Lubricant (or equivalent meeting H-D specification).
Transmission Oil Capacity:
Refer to specific model year; typically around 20-24 US fluid ounces (0.6-0.7 Liters).
Primary Chaincase Oil Type:
Harley Davidson Transmission & Primary Chaincase Lubricant (or equivalent meeting H-D specification).
Primary Chaincase Oil Capacity:
Refer to specific model year; typically around 30-34 US fluid ounces (0.9-1.0 Liters).
Brake Fluid Type:
DOT 4 brake fluid.
Fork Oil Type:
Refer to specific model year and front fork type (e.g., Showa, Marzocchi). Typically a light-viscosity fork oil.
Common Wear Items:
Cylinder base gaskets (oil leaks), primary chain tensioner (especially early models), wheel bearings, fork seals, clutch plates.
Ignition System Concerns:
Potential issues with ignition modules (single fire vs. dual fire), points (on very early models not covered here), and coil packs.
Carburetor Issues:
CV carburetor may require tuning adjustments or diaphragm replacement over time. Harley-Davidson recommended performance upgrades like the Mikuni HSR series.
Brand Legacy:
Harley Davidson has a long-standing heritage in American motorcycle manufacturing, known for its V-twin engines and cruiser styling.
Dyna Introduction:
The DYNA series was introduced in 1991 as a new platform, designed to bridge the gap between the Softail and Sportster lines, featuring a rubber-mounted engine for reduced vibration.
Evolution Engine Introduction:
The Evolution ('Evo') engine, introduced in 1984 for Sportsters and 1984 for Big Twins, was a significant redesign replacing the Shovelhead and Ironhead engines. It offered improved reliability and performance.
Manufacturing Location:
United States (primarily York, Pennsylvania and Milwaukee, Wisconsin facilities).
Key Models Within Dyna Line:
FXDL (Low Rider), FXDWG (Wide Glide), FXD (Super Glide), FXDC (Custom), FXDS-CON (Convertible)
