🏷️ Basic Information

Make:

Ducati

Model:

ST3

Model Variant:

ST3 Sport Touring

Year:

2004-2007

Chassis Code:

As per service manual

Engine Code Prefix:

As per service manual

👋 Introduction

Segment:

Sport Touring Motorcycle

Positioning:

Ducati's offering in the sport-touring segment, blending performance with long-distance comfort and practicality.

Key Competitors:

BMW R1200RT, Honda VFR800 VTEC, Yamaha FJR1300, Kawasaki GTR1400

Engine Type:

Desmodromic L-Twin engine, known for its distinctive power delivery and sound.

Styling:

Classic Ducati styling with sporty lines and touring ergonomics.

Versatility:

Designed for both spirited riding and comfortable long-distance touring, often equipped with optional luggage.

📋 Manual Details

Systems Covered:

Engine, Fuel System, Ignition System, Cooling System, Transmission, Clutch, Chassis, Suspension, Brakes, Electrical System, Wiring Diagrams, Bodywork, Maintenance, Troubleshooting, Diagnostics, Specifications, Special Tools

Page Count:

Estimated 500+ pages (typical for comprehensive workshop manuals)

Manual Type:

Complete Workshop Service Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine Mechanical:

Detailed disassembly, assembly, inspection, and repair procedures for all engine components including cylinders, pistons, connecting rods, crankshaft, camshafts, valves, valve train, timing belts, and lubrication system.

Fuel System:

Comprehensive coverage of fuel injection system, fuel pump, injectors, fuel pressure regulator, throttle body, fuel tank, and fuel lines, including diagnosis and testing.

Ignition System:

Detailed information on ignition coils, spark plugs, ECU control, and troubleshooting ignition system faults.

Cooling System:

Procedures for radiator, coolant pump, thermostat, hoses, and fan operation, including fluid types and capacities.

Transmission Clutch:

Complete disassembly and assembly of the gearbox, clutch operation (hydraulic), clutch plates, pressure plate, and related components. Includes gear ratios and maintenance.

Chassis Suspension:

Front fork (Marzocchi or Showa depending on variant) disassembly, servicing, and adjustment; rear shock absorber servicing; swingarm maintenance; bearing inspection and replacement.

Brakes:

Detailed procedures for front and rear brake systems, including Brembo components, brake calipers, master cylinders, brake lines, pads, rotors, and bleeding procedures. ABS system coverage (if applicable).

Electrical System:

Comprehensive wiring diagrams, component identification, troubleshooting of electrical faults, battery, alternator, starter motor, lighting, instrumentation, and ECU diagnostics.

Bodywork:

Instructions for removal and installation of fairings, seat, fuel tank, fenders, and other body panels.

Scheduled Maintenance:

Detailed recommended service intervals for oil changes, filter replacements, spark plug replacement, valve clearance checks, belt replacements, brake fluid changes, coolant changes, and chain adjustment.

Troubleshooting:

Systematic diagnostic procedures for common and uncommon issues, fault codes, and symptom-based troubleshooting guides.

Engine Rebuild:

Complete step-by-step instructions for engine overhaul, including torque specifications, clearances, and assembly sequences.

Suspension Adjustment:

Guidance on adjusting front and rear suspension settings for optimal handling and rider comfort.

Brake System Service:

Detailed instructions for brake pad replacement, caliper service, fluid flushing and bleeding, and master cylinder overhaul.

Electrical Diagnostics:

How to use a multimeter, interpret wiring diagrams, and diagnose electrical faults in the charging system, ignition system, and accessories.

Special Tool Usage:

Identification and usage of Ducati-specific tools required for certain maintenance and repair tasks.

Depth:

Comprehensive, covering all aspects from basic checks and fluid changes to complete engine and transmission rebuilds, and advanced electrical system diagnostics.

📊 Manual Specifications

File Format Details:

Searchable PDF, allowing for quick access to specific information via keywords.

Print Quality:

High-resolution digital scans ensuring clear text and legible diagrams.

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

Desmodromic, four-stroke, L-twin (90° V-twin)

Displacement:

937 cc (Actual displacement may vary slightly based on specific model year nuances, but ST3 generally refers to the 937cc engine).

Bore X Stroke:

98 mm x 66 mm (Typical for the 937cc engine)

Compression Ratio:

11.3:1 (Typical)

Valve Actuation:

Desmodromic valve control (no valve springs)

Cooling System:

Liquid-cooled

Horsepower:

Approx. 107 HP @ 9,000 rpm

Torque:

Approx. 94 Nm (69 lb-ft) @ 7,250 rpm

Fuel Delivery:

Electronic Fuel Injection (EFI) with sequential injection

Fuel Type:

Unleaded gasoline, minimum 95 octane (RON)

Oil Type:

Synthetic motorcycle oil meeting API SG/SH/SJ and JASO MA specifications, typically SAE 10W-40 or 15W-50 depending on climate.

Oil Capacity:

Approx. 3.8 liters (3.2 US quarts) with filter change

Spark Plugs:

NGK CR9EK or equivalent (confirm specific part number in manual)

Timing Belts:

Two Desmodromic timing belts, requiring replacement at specified intervals (e.g., 24,000 km or 2 years).

🔧 Transmission

Transmission Type:

6-speed sequential gearbox

Clutch Type:

Hydraulic wet multi-plate clutch

Final Drive:

Chain drive

Gear Ratios:

As detailed in the service manual, specific ratios for each gear.

Transmission Oil Type:

Typically SAE 75W-90 or 80W-90 gear oil meeting API GL-4 specification (confirm in manual).

Transmission Oil Capacity:

Approx. 1.5 liters (confirm in manual)

📐 Dimensions

Length:

Approx. 2,100 mm

Width:

Approx. 760 mm (excluding mirrors)

Height:

Approx. 1,200 mm (seat height varies)

Wheelbase:

Approx. 1,450 mm

Seating Capacity:

2

Luggage Capacity:

Designed for optional Ducati panniers and top case for touring.

Dry Weight:

Approx. 185 kg (408 lbs)

Wet Weight:

Approx. 208 kg (459 lbs) (with fluids)

Maximum Load:

As specified in the manual

Front Tire:

120/70 ZR17

Rear Tire:

180/55 ZR17

Wheel Type:

Alloy

Wheel Bolt Pattern:

N/A (Motorcycle specific)

🛡️ Safety Features

Crash Test Ratings:

N/A (Motorcycle safety is assessed differently from cars)

Braking System:

Dual 320mm discs with 4-piston radial calipers (front), Single 245mm disc with 2-piston caliper (rear). ABS optional on some models.

Suspension:

Adjustable front forks and rear shock absorber contribute to stability and handling.

Lighting:

Halogen headlight, LED taillight (standard on later models/variants).

Ergonomics:

Designed for comfortable rider positioning during long rides.

💡 Technology Features

Instrument Cluster:

Digital and analog display with tachometer, speedometer, trip computer, and warning lights.

Audio System:

N/A (Typically no integrated audio system on this model)

ABS:

Anti-lock Braking System (ABS) was an optional feature on some ST3 models.

Diagnostics Port:

OBD-II or proprietary Ducati diagnostic connector for ECU access and troubleshooting.

🔧 Maintenance

Oil Change Interval:

Every 12,000 km or 12 months, whichever comes first.

Desmo Valve Service:

Every 24,000 km (critical for desmodromic engines).

Timing Belt Replacement:

Every 24,000 km or 2 years.

Brake Fluid Change:

Every 24 months.

Coolant Change:

Every 24 months.

Chain Lubrication Adjustment:

Regularly, as per owner's manual, and checked at each service.

Engine Oil Specification:

API SG/SH/SJ and JASO MA, SAE 10W-40 or 15W-50.

Coolant Specification:

Mixture of distilled water and ethylene glycol-based antifreeze (e.g., Motul Motocool Expert).

Brake Fluid Specification:

DOT 4 (confirm in manual for specific requirements).

Clutch Fluid Specification:

DOT 4 (confirm in manual for specific requirements).

Gear Oil Specification:

SAE 75W-90 or 80W-90 API GL-4 (confirm in manual).

Common Problems:

Desmodromic valve adjustments require precision. Timing belt wear and replacement are critical. Potential electrical connector issues over time. Fuel pump reliability can be a concern if not maintained.

Maintenance Tips:

Strict adherence to desmo service intervals is paramount. Regular cleaning and inspection of electrical connectors can prevent issues. Keep the cooling system in good condition.

📚 Vehicle History

Heritage:

Ducati is an iconic Italian manufacturer renowned for its high-performance motorcycles, particularly L-twin engines and racing heritage.

St Series Introduction:

The ST series was Ducati's foray into the sport-touring market, aiming to offer practicality and comfort without sacrificing performance.

St3 Introduction:

The ST3 was introduced as an evolution of the ST2 and ST4 models, featuring the newer 937cc Testastretta engine, offering improved torque and performance.

Engine Heritage:

The 937cc L-twin engine used in the ST3 is derived from Ducati's Testastretta engine family, known for its sporty character.

Production Years:

2004-2007 (for the ST3 model)

Manufacturing Location:

Bologna, Italy

🏆 Awards & Recognition

Awards:

While specific awards for the ST3 are not widely publicized, it was generally well-received by motorcycle journalists for its blend of performance and touring capability within the Ducati brand.

Magazine Reviews:

Often praised for its engine character, handling balance, and comfortable ergonomics for a Ducati sportbike.

Emissions Standards:

Euro 2 or Euro 3 compliant depending on market and year of manufacture (as per documentation).