Segment:
Cruiser Motorcycle
Harley-Davidson Positioning:
Iconic American cruiser known for its distinctive styling, comfortable ride, and V-twin engine rumble.
Competitors 2001:
Indian Chief, Kawasaki Vulcan series, Honda Shadow series, Yamaha Road Star series
Styling:
Wide front fork, FL-style fender, fat tire aesthetic, chrome accents
Engine:
Torquey Twin Cam 88 V-twin engine
Comfort:
Low seat height, forward-mounted foot controls, wide handlebars for a relaxed riding posture
Engine Service:
Complete Engine Overhaul and Reassembly
Transmission Service:
Gearbox Maintenance and Repair
Electrical System:
Wiring Diagrams, Component Testing, and Troubleshooting
Frame And Suspension:
Fork, Shock Absorbers, and Frame Component Service
Braking System:
Hydraulic System Maintenance, Pad Replacement, and Bleeding
Fuel And Exhaust:
Carburetor Servicing, Fuel Tank and Exhaust System Maintenance
Body And Trim:
Fender, Tank, and Handlebar Component Repair and Adjustment
Wheel And Tire:
Wheel Bearing Service and Tire Replacement
Type:
Workshop Service Repair Manual
Engine:
Twin Cam 88 (1450cc) V-Twin Engine, Carburetion, Ignition System
Transmission:
5-Speed Cruise Drive Transmission, Clutch Operation
Chassis:
Frame, Swingarm, Front Fork (21-inch wheel), Rear Shock Absorbers
Brakes:
Front and Rear Hydraulic Disc Brakes
Electrical:
Lighting, Instrumentation, Battery, Charging System, Starting System, Ignition, Fuel Injection (EFI component overview, though primarily carbureted model)
Fuel System:
Mikuni HSR42 Carburetor Service and Adjustment
Exhaust System:
Muffler and Header Pipe Maintenance
Wheels Tires:
Wheel Bearing Replacement, Tire Mounting and Balancing
Routine Maintenance:
Oil Changes, Filter Replacements, Chain Adjustments (if applicable), Spark Plug Service
Engine Overhaul:
Piston Ring Replacement, Valve Adjustment, Cylinder Head Service, Camshaft Installation
Transmission Repair:
Gearset Inspection, Bearing Replacement, Shift Drum and Pawl Service
Electrical Troubleshooting:
Fault Diagnosis, Component Testing Procedures, Wiring Harness Repair
Brake Service:
Brake Pad Replacement, Rotor Inspection, Caliper Overhaul, Hydraulic Fluid Bleeding
Suspension Adjustment:
Front Fork Oil Replacement and Seal Replacement, Rear Shock Adjustment
Carburetor Tuning:
Jetting adjustments, Idle Speed Settings, Float Level Adjustment
Depth:
Comprehensive from basic maintenance to complete engine and transmission rebuilds, including detailed troubleshooting guides and specifications.
Engine Type:
Air-cooled, Twin Cam 88, pushrod V-twin
Displacement:
1450 cc (88 cubic inches)
Bore X Stroke:
3.75 in x 4.00 in (95.25 mm x 101.6 mm)
Valve Train:
Overhead valves (OHV), 2 valves per cylinder, operated by pushrods
Horsepower Est:
Approx. 65-70 hp (at crankshaft, estimated)
Torque Est:
Approx. 80-85 lb-ft (at crankshaft, estimated)
Fuel Type:
Unleaded gasoline, minimum 87 octane
Oil Type:
Harley-Davidson SYN3 or equivalent SAE 20W50 motorcycle oil meeting Harley-Davidson P/N 62600004
Oil Capacity:
3.7 US qt (3.5 L) with filter change
Transmission Type:
5-speed constant mesh, sequential manual
Primary Drive:
Duplex chain, hydraulic tensioner
Final Drive:
Belt drive, 25mm
Clutch:
Wet, multi-plate, diaphragm spring
Transmission Fluid:
Harley-Davidson Formula+ Transmission Lubricant or equivalent SAE 80W-90 API GL-5 gear oil
Transmission Fluid Capacity:
24 US fl oz (0.71 L)
Safety Certification:
Meets DOT and EPA requirements for its class
Braking:
Dual-action front hydraulic disc brake, Rear hydraulic disc brake
Lighting:
Halogen headlight, tail light, brake light, turn signals
Audio System:
Optional accessory radio systems available; not standard equipment on this model.
Instrumentation:
Analog speedometer, tachometer, fuel gauge, oil pressure gauge, indicator lights (turn signal, oil pressure, neutral, high beam)
ABS:
Not available on this model year.
Bluetooth:
Not available on this model year.
First Service:
1000 miles (1600 km) or 12 months
Subsequent Service:
Every 5000 miles (8000 km) or 12 months thereafter
Engine Oil Grade:
SAE 20W50
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid
Primary Chain Case Oil:
Harley-Davidson Formula+ Transmission Lubricant or equivalent SAE 80W-90 API GL-5 gear oil
Common Wear Items:
Clutch plates, brake pads, tires, wheel bearings, spark plugs, drive belt
Twin Cam 88 Considerations:
Early Twin Cam 88 engines may benefit from updated oil pump and cam chain tensioner upgrades (check service bulletins for specifics).
Carburetor Tuning Sensitivity:
Mikuni HSR42 can be sensitive to altitude and temperature changes, requiring occasional adjustments for optimal performance.
Spark Plug Gap:
0.035-0.043 inches (0.89-1.09 mm)
Idle Speed:
950-1050 RPM (engine warm)
Harley-Davidson Legacy:
Founded in 1903, Harley-Davidson is synonymous with American motorcycle culture, known for its V-twin engines and rebellious spirit.
Fat Boy Introduction:
The Fat Boy was introduced in 1990 as the FLSTF, becoming an instant icon due to its distinctive styling inspired by custom bikes of the 1940s and 1950s.
Flstfi Updates:
The 'I' designation in FLSTFI signifies Electronic Fuel Injection, though this specific model for 2001 utilizes a carburetor. The Twin Cam 88 engine replaced the Evolution engine in 1999.
Manufacturing Location:
United States
