Engine:
Shovelhead OHV V-Twin (detailed diagnostics, overhaul, component replacement)
Fuel System:
Carburetion (e.g., Keihin Butterfly, CV), Fuel Pump, Fuel Tank, Lines
Ignition System:
Electronic Ignition System (points conversion if applicable), Coils, Spark Plugs
Transmission:
4-Speed Cruise Drive Transmission (disassembly, assembly, fluid service, troubleshooting)
Drivetrain:
Primary Drive (clutch, chain), Final Drive (belt drive system)
Electrical System:
Wiring Diagrams, Lighting, Charging System (alternator, regulator), Starting System (starter motor, solenoid), Battery, Horn, Indicators
Chassis Frame:
Frame inspection, alignment, component mounting
Suspension:
Front Forks (telescopic, oil changes, seal replacement), Rear Shocks (adjustment, replacement)
Brakes:
Front and Rear Brake Systems (hydraulic, disc brakes - master cylinder, caliper, rotor, pads, fluid flush)
Wheels Tires:
Wheel bearings, tire pressure, installation
Bodywork Fenders:
Fender removal/installation, fuel tank mounting
Controls:
Handlebars, levers, cables (throttle, clutch, brake)
Maintenance:
Scheduled maintenance, oil changes, filter replacements, lubrication, spark plug service, brake adjustments, tire checks
Diagnostics:
Troubleshooting charts for common problems, symptom-based diagnostics
Repair:
Component-level repair, rebuilding procedures for engine and transmission, brake system overhauls
Assembly Disassembly:
Step-by-step instructions for major component removal and reinstallation
Wiring Diagrams:
Detailed, color-coded wiring schematics for all electrical systems
Depth:
Comprehensive (from basic maintenance to complete engine and transmission rebuilds)
Engine Type:
Harley-Davidson Shovelhead V-Twin
Displacement:
73.7 cu. in. (1208 cc)
Bore X Stroke:
3.4375 in. x 4.25 in. (87.3 mm x 108 mm)
Compression Ratio:
8.0:1 (typical, can vary slightly)
Horsepower:
Approx. 55-60 HP (at rear wheel, varies by tuning)
Torque:
Approx. 65-70 ft-lbs (at rear wheel, varies by tuning)
Carburetor Type:
Keihin Butterfly or Constant Velocity (CV) carburetor
Fuel Type:
Unleaded gasoline, minimum 87 octane
Oil System:
Dry Sump (oil tank separate from engine crankcase)
Transmission Type:
4-speed Manual Constant Mesh
Gear Ratios:
Typically: 1st: 2.94, 2nd: 2.09, 3rd: 1.51, 4th: 1.00 (check manual for exact ratios)
Clutch Type:
Wet Multi-plate
Transmission Fluid:
Harley-Davidson recommended gear oil or equivalent (e.g., SAE 80W-90, check manual for specifics)
Oil Change:
Every 2,000-3,000 miles or annually (refer to manual for exact intervals)
Primary Chain Tensioner:
Check and adjust as needed, typically every few thousand miles
Spark Plugs:
Inspect and gap every 5,000 miles, replace as needed
Engine Oil Type:
Harley-Davidson Genuine V-Twin Oil 20W-50 or equivalent premium motorcycle oil
Engine Oil Capacity:
Approximately 3 quarts (2.8 liters) including oil tank
Brake Fluid Type:
DOT 4 hydraulic brake fluid (check manual for specific recommendation)
Fork Oil Type:
Motorcycle fork oil (viscosity typically 10W or 15W, refer to manual)
Engine:
Oil leaks (especially from pushrod tubes and crankcase seals), valve seat wear, cam follower wear, oil pump drive issues
Transmission:
Potential for false neutrals, shifting difficulties, worn bearings
Electrical:
Aging wiring, corrosion, charging system issues (stator, regulator), ignition module failures
Carburetor:
Vapor lock, jetting issues, worn throttle shafts
Engine Mounts:
Specific torque values for various engine components (e.g., cylinder heads, manifolds) provided in manual
Axle Nuts:
Specific torque values for wheel axle nuts provided in manual
Heritage:
Iconic American motorcycle manufacturer with a long history of innovation and performance.
Evolution:
The FXB model represents the evolution of the FLH chassis with the Shovelhead engine, a blend of classic styling and improved performance over earlier models.
Production Period:
Shovelhead engine production spanned from 1966 to 1984. The FXB designation was specific to the early 1980s.
Manufacturing Location:
Milwaukee, Wisconsin, USA
