Gear inspection and replacement, clutch plate service, bearing replacement, shift drum and fork service.
Electrical Diagnostics:
Troubleshooting electrical faults, testing components, using wiring diagrams, component replacement.
Suspension Overhaul:
Fork seal replacement, fork oil change, rear shock absorber service and replacement.
Brake System Service:
Brake pad replacement, caliper overhaul, master cylinder service, brake line flushing and bleeding.
Carburetor Rebuild:
Carburetor disassembly, cleaning, inspection, adjustment, and reassembly.
Wheel Bearing Service:
Wheel bearing inspection, repacking, and replacement.
Technical Depth
Depth Level:
Comprehensive Factory Level
Diagnostic Capability:
Advanced diagnostic information and troubleshooting charts for all systems.
Rebuild Procedures:
Detailed step-by-step instructions for complete engine, transmission, and major component rebuilds.
📊 Manual Specifications
File Format
Format:
PDF (Portable Document Format)
Print Quality
Printability:
High-resolution, suitable for full-scale printing.
Binding Type
Suggested Binding:
Spiral-bound or three-ring binder for ease of use in workshop.
Paper Type
Recommended Paper:
Durable, laminated paper for shop environment if printed.
⚙️ Engine Specifications
Primary Engine
Engine Family:
Evolution (Evo)
Engine Type:
V-Twin, Four-stroke
Displacement:
1449 cc (88 cubic inches)
Bore X Stroke:
3.50 in x 4.47 in (88.9 mm x 113.5 mm)
Compression Ratio:
8.5:1
Cooling System:
Air-Cooled
Valvetrain:
OHV, 2 valves per cylinder
Performance
Horsepower Estimate:
Approx. 65-70 HP (at crankshaft, estimated)
Torque Estimate:
Approx. 75-80 lb-ft (at crankshaft, estimated)
Fuel System
Fuel Delivery:
Carburetor
Carburetor Model:
Keihin CV (Constant Velocity) 40mm
Fuel Type:
Unleaded Gasoline, 91 Octane or higher recommended
🔧 Transmission
Standard
Transmission Type:
5-Speed Constant Mesh
Clutch Type:
Wet, multi-plate
Features
Primary Drive:
Chain
Final Drive:
Belt Drive
Transmission Fluid Type:
Harley-Davidson Syn3 (SAE 20W-50) or equivalent.
📐 Dimensions
Exterior
Length:
Approx. 94.5 in (2400 mm)
Width:
Approx. 38.0 in (965 mm)
Height:
Approx. 49.0 in (1245 mm)
Weights
Dry Weight:
Approx. 685 lbs (311 kg)
Gross Vehicle Weight Rating:
Approx. 1075 lbs (488 kg)
Fuel Capacity:
4.0 US gal (15.1 L)
🛡️ Safety Features
Active Features
Braking System:
Dual-action front brake, single-action rear brake.
Passive Features
Lighting:
Halogen headlight, LED taillight, front and rear turn signals.
Horn:
Standard
💡 Technology Features
Infotainment
Audio System:
No integrated infotainment system; typically aftermarket audio is installed.
Instrumentation:
Analog speedometer, tachometer (optional on some trims), fuel gauge, indicator lights.
Driver Assistance
Electronic Aids:
None (basic motorcycle electronics).
Connectivity
Smartphone Integration:
Not applicable.
🔧 Maintenance
Service Intervals
Initial Service:
1000 miles (1600 km) or 6 months
Subsequent Service:
Every 5000 miles (8000 km) or 12 months thereafter
Engine Oil Change:
Every 5000 miles (8000 km)
Primary Chain Tensioner Inspection:
Every 10000 miles (16000 km)
Fluid Specifications
Engine Oil:
Harley-Davidson Syn3 (SAE 20W-50) or equivalent.
Transmission Oil:
Harley-Davidson Syn3 (SAE 20W-50) or equivalent.
Primary Chain Case Oil:
Harley-Davidson primary fluid or Syn3 (SAE 20W-50).
Brake Fluid:
DOT 4
Known Issues
Primary Chain Tensioner:
Wear on the automatic primary chain tensioner can lead to noise and potential damage. Manual replacement with updated or manual tensioner is a common upgrade.
Cam Chain Tensioners:
Similar to primary tensioners, early Evo models can have wear issues with cam chain tensioners, often addressed with upgraded components.
Carburetor Tuning:
CV carburetors can require periodic adjustment for optimal performance, especially with altitude or aftermarket exhaust/intake changes.
📚 Vehicle History
Brand Heritage
Manufacturer:
Harley-Davidson Motor Company
Founding Year:
1903
Model Evolution
Fat Boy Introduction:
Introduced in 1990, the Fat Boy quickly became an icon for its distinctive styling, wide front tire, and solid disc wheels.
2000 Model Year Updates:
While major platform changes occurred later, the 2000 model represents a mature iteration of the Evolution engine platform and classic Fat Boy styling.
Production
Manufacturing Location:
York, Pennsylvania, USA and Milwaukee, Wisconsin, USA
🏆 Awards & Recognition
Recognitions
Model Recognition:
The Fat Boy is widely recognized as an iconic American motorcycle, celebrated for its distinctive styling and enduring appeal.