🏷️ Basic Information

Make:

Harley-Davidson

Model:

FXDB Dyna Daytona

Model Variant:

Dyna Daytona

Model Code:

FXDB

Year Range Start:

1991

Year Range End:

1998

👋 Introduction

Positioning:

Essential resource for owners and technicians performing maintenance and repairs on the Harley-Davidson FXDB Dyna Daytona.

Alternatives:

Covers specific model years and variants where third-party manuals might be less detailed or comprehensive.

Features:

Detailed diagrams, step-by-step instructions, diagnostic procedures, and service specifications.

📋 Manual Details

Manual Type:

Service Repair Workshop Manual

Language:

English

Format:

Digital (PDF)

Page Count Estimate:

Approximately 500+

📖 Manual Coverage

Engine:

Detailed engine overhaul, internal components, carburetor tuning, ignition system, lubrication system

Transmission:

5-speed gearbox, clutch assembly, shift mechanism, transmission oil

Electrical:

Wiring diagrams, charging system, ignition system, lighting, starting system, instrumentation

Chassis Suspension:

Front forks, rear shock absorbers, swingarm, steering head bearings

Braking System:

Front and rear brake caliper service, master cylinders, brake fluid replacement, bleeding procedures

Fuel System:

Fuel tank, fuel lines, fuel filter, carburetor (Keihin CV), fuel pump (if applicable)

Exhaust System:

Muffler and header pipe service, exhaust flange sealing

Bodywork Fittings:

Fender removal and installation, seat assembly, handlebar components, dash assembly

Maintenance:

Routine servicing, oil changes, filter replacements, spark plug replacement, chain adjustment

Troubleshooting:

Diagnostic charts for common problems, electrical system diagnostics

Repair:

Step-by-step instructions for major component repairs and overhauls

Assembly Disassembly:

Complete disassembly and reassembly procedures for all major systems

Specifications Tolerances:

Torque specifications, critical dimensions, and wear tolerances for engine and chassis components

Depth:

Comprehensive from basic maintenance to complete engine rebuilds and electrical system diagnostics

Manual Purpose:

Comprehensive guide for diagnosis, repair, maintenance, and overhaul of the Harley-Davidson FXDB Dyna Daytona.

Documentation Source:

Based on official Harley-Davidson factory service manuals and workshop procedures.

📊 Manual Specifications

File Format Type:

PDF

Searchability:

Text-searchable for easy navigation and information retrieval

Print Quality:

High-resolution scans of original factory documentation

Binding:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Evolution (V-twin)

Engine Displacement:

1339 cc (82 cubic inches)

Bore X Stroke:

3.4375 in. x 4.25 in. (87.31 mm x 107.95 mm)

Compression Ratio:

8.5:1 (typical)

Ignition System:

Electronic ignition

Carburetor:

Keihin CV (Constant Velocity) 40mm

Valve Train:

Overhead valve, two valves per cylinder, pushrod actuated

Oil Capacity:

Approximately 3.5 U.S. quarts (3.3 liters) with filter change

Horsepower Estimate:

Approximately 60-70 hp (varies by tuning and exhaust)

Torque Estimate:

Approximately 70-80 ft-lbs (varies by tuning and exhaust)

Fuel Type:

Unleaded gasoline, 91 octane (minimum recommended)

Fuel Tank Capacity:

4.0 U.S. gallons (15.1 liters)

🔧 Transmission

Transmission Type:

5-speed constant mesh

Clutch Type:

Wet, multi-plate

Final Drive:

Belt drive

Gear Ratios:

Detailed in manual, typically 1st: 9.203, 2nd: 6.410, 3rd: 4.921, 4th: 3.975, 5th: 3.305

Transmission Oil Type:

Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant (or equivalent)

Transmission Oil Capacity:

Approximately 24 U.S. fluid ounces (710 ml)

📐 Dimensions

Length:

Approximately 92.5 inches (2350 mm)

Width:

Approximately 37.4 inches (950 mm)

Height:

Approximately 47.0 inches (1194 mm)

Wheelbase:

Approximately 63.0 inches (1600 mm)

Dry Weight:

Approximately 600 lbs (272 kg)

Gross Vehicle Weight Rating Gvwr:

Approximately 1075 lbs (488 kg)

Payload Capacity:

Approximately 475 lbs (215 kg)

🛡️ Safety Features

Crash Test Ratings:

N/A for motorcycles of this era

Braking:

Dual disc front brakes, single disc rear brake

Lighting:

Halogen headlight, taillight, turn signals

Frame Construction:

Steel frame and swingarm construction

💡 Technology Features

Infotainment System:

N/A (basic instrumentation, no factory infotainment systems)

Driver Assistance:

N/A (no electronic driver assistance features)

Connectivity:

N/A (no integrated connectivity features)

🔧 Maintenance

Oil Change Interval:

Every 2,500-5,000 miles or 6 months (refer to manual for precise recommendation)

Primary Chain Tension:

Check and adjust every 5,000 miles

Spark Plug Replacement:

Every 10,000-15,000 miles

Brake Fluid Flush:

Every 2 years

Belt Drive Inspection:

Inspect for wear and tension at regular intervals

Engine Oil Type:

Harley-Davidson SYN3 (Synthetic) or recommended Harley-Davidson 20W50 motorcycle oil

Transmission Oil Type:

Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant (or equivalent)

Primary Clutch Fluid Type:

Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant (or equivalent)

Brake Fluid Type:

DOT 4

Known Issues:

Potential for oil leaks around the rocker boxes, starter drive gear wear, carburetors may require tuning for optimal performance, clutch cable adjustment sensitivity.

📚 Vehicle History

Heritage:

Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer with a rich history in performance, customization, and lifestyle.

Evolution Notes:

The Dyna platform was introduced in 1991, featuring a rubber-mounted engine for reduced vibration. The FXDB Daytona was a specific, often limited-production, model within the Dyna range, known for its sportier styling and performance-oriented features.

Production Era:

1991-1998 for the FXDB Dyna Daytona model

Manufacturing Location:

United States