Target Audience:
Riders seeking a blend of performance, comfort, and long-distance capability.
Key Competitors:
Honda VFR, Yamaha FJR1300, Kawasaki GTR1400, BMW R1200ST.
Engine Configuration:
90-degree V-twin (L-twin) with Desmodromic valve actuation.
Desmodromic Valvetrain:
Ducati's signature Desmodromic system for precise valve control without springs.
Suspension:
Premium adjustable suspension components (e.g., Öhlins, Marzocchi) for superior ride quality and handling.
Braking System:
High-performance Brembo radial-mount braking system for exceptional stopping power.
Ergonomics:
Comfort-oriented riding position suitable for longer journeys.
Engine:
Complete disassembly, assembly, inspection, tuning, and repair of the L-Twin Desmodromic engine.
Fuel System:
Fuel injection system (EFI) components, injectors, fuel pump, pressure regulator, throttle bodies.
Ignition System:
Ignition timing, spark plugs, coils, ECU mapping (where applicable).
Cooling System:
Radiator, fan, coolant lines, thermostat, fluid specifications and bleeding procedures.
Transmission:
Clutch (dry clutch components, operation), gearbox, gear selection mechanism, internal components, fluid specifications.
Chassis Frame:
Trellis frame inspection, alignment, modifications, and repair procedures.
Suspension Front:
Öhlins or Marzocchi fork disassembly, assembly, seal replacement, damping adjustments, oil levels and specifications.
Suspension Rear:
Monoshock rear suspension, linkage system, Öhlins or Sachs shock absorber disassembly, adjustments, and rebuild procedures.
Brakes Front:
Brembo radial caliper overhaul, piston replacement, pad replacement, brake fluid specifications, bleeding procedures, disc inspection.
Brakes Rear:
Brembo caliper overhaul, pad replacement, brake fluid specifications, bleeding procedures, disc inspection.
Wheels Tires:
Wheel bearing replacement, tire mounting and balancing, recommended tire pressures.
Electrical System:
Wiring diagrams, starter motor, alternator, battery, lighting system, instrument cluster, ECU diagnostics, fuses, relays.
Bodywork:
Fairing removal and installation, seat, fuel tank, tail section, fenders, and accessory fitment.
Diagnostics:
Troubleshooting guides, fault codes, diagnostic connector usage (if applicable), common problem identification.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, chain adjustment and lubrication, air filter service.
Major Overhaul:
Complete engine rebuild procedures, transmission overhaul, suspension component refurbishment.
Troubleshooting:
Step-by-step diagnostic procedures for common and uncommon issues.
Component Replacement:
Detailed instructions for replacing all major and minor components.
Torque Specifications:
Comprehensive list of all critical torque values for fasteners.
Depth Level:
Comprehensive: Covers basic maintenance to full engine and chassis rebuilds.
Detail Level:
Detailed diagrams, exploded views, step-by-step instructions, and specifications.
Engine Type:
Four-stroke, L-twin (90° V), Desmodromic 4 valves per cylinder
Displacement:
937 cc (approx. 57.2 cu in)
Bore X Stroke:
98 mm x 62.4 mm
Compression Ratio:
11.3:1
Horsepower:
110 HP (82 kW) @ 8750 rpm (approx.)
Torque:
94 Nm (69 lb-ft) @ 7250 rpm (approx.)
Fuel Delivery:
Electronic Fuel Injection (EFI) with throttle bodies
Fuel Type:
Unleaded gasoline, minimum 95 RON
Oil Type:
See Maintenance Section for specific grades (e.g., SAE 10W-40, API SG or higher, JASO MA compliant)
Oil Capacity:
Approx. 3.5 liters (3.7 US qt) with filter change
Crash Test Results:
N/A (Motorcycle Safety Ratings are typically manufacturer-specific and not standardized like cars).
Braking System:
Dual 320mm discs with radial 4-piston calipers (front), Single 245mm disc with 2-piston caliper (rear).
ABS:
Optional on some models/regions, check specific VIN. Manual may cover ABS component diagnostics if equipped.
Lighting:
Halogen headlights, LED tail light, turn signals.
Frame Design:
Trellis frame design for rigidity and rider feedback.
Instrument Cluster:
Digital LCD display with analog tachometer, showing speed, RPM, fuel level, coolant temperature, trip meters, and warning lights.
ECU:
Engine Control Unit (ECU) manages fuel injection, ignition timing, and other engine parameters. Manual may cover basic diagnostic access.
ABS:
Anti-lock Braking System was an optional feature on some ST3 models. The manual will detail its components and operation if equipped.
Diagnostic Port:
The manual will likely show the location and use of the diagnostic connector for basic fault code reading.
Oil Change Interval:
Every 12,000 km (7,500 miles) or 12 months, whichever comes first. Manual specifies detailed checks.
Desmo Service Interval:
Major valve clearance check and adjustment (Desmodromic service) typically every 24,000 km (15,000 miles). Manual details exact procedure and checkpoints.
Belt Replacement Interval:
Timing belt replacement every 24,000 km (15,000 miles) or 5 years. Crucial for engine integrity.
Spark Plug Replacement:
As per manual recommendations, typically around 12,000-24,000 km (7,500-15,000 miles).
Engine Oil:
Refer to manual: Typically SAE 10W-40, API SG or higher, JASO MA compliant.
Brake Fluid:
DOT 4. Manual specifies flush and replacement intervals.
Coolant:
Ethylene glycol based coolant with anti-corrosion additives. Manual specifies type and mix ratio (e.g., 50/50).
Clutch Fluid:
DOT 4 (shared with brake system in many Ducati models, verify in manual).
Starter Motor Solenoid:
Occasional issues with the starter solenoid can lead to starting problems.
Fuel Pump Reliability:
Some owners have reported early failures of the fuel pump, especially with aged units.
Desmo Service Timing:
Adhering strictly to Desmodromic service intervals is critical to prevent valve damage.
Regulator Rectifier:
Like many motorcycles of this era, the regulator/rectifier can be prone to overheating and failure.
Brand Origin:
Founded in Bologna, Italy, in 1926 by the Ducati family.
Motorsport Legacy:
Strong roots in motorcycle racing, particularly MotoGP and World Superbike Championship (WSBK).
St Series Introduction:
The ST series was designed to offer a more comfortable and practical alternative to Ducati's sportbikes.
St3 Introduction:
The ST3 was introduced to offer a potent and versatile sport-tourer, evolving from earlier ST models.
Manufacturing Location:
Bologna, Italy
Production Years:
ST3: 2003-2007 (approx. ST3s with ABS later)
