Model:
Alazzurra GT 350 & Alazzurra GT 650
Vehicle Type:
Vintage Motorcycle
Manual Product Name:
Ducati Alazzurra GT 350 & Alazzurra GT 650 Workshop Manual
Engine Code 350:
Not specified, presumed a 350cc variant of the Pantah engine family
Engine Code 650:
Not specified, presumed a 650cc variant of the Pantah engine family
Market Segment:
Classic Italian Sport Motorcycle
Target Audience:
Owners and restorers of Ducati Alazzurra GT 350 and GT 650 motorcycles seeking detailed repair and maintenance information.
Competitors Era:
Competed with other Italian and European marques offering shaft-drive or belt-drive middleweight to large displacement motorcycles in its era.
Design Philosophy:
Emphasis on exotic styling, V-twin engine performance, and a distinctive Italian character.
Manual Value Proposition:
Provides essential technical data and procedures to maintain and repair these sought-after vintage motorcycles, crucial for preserving their value and performance.
Engine:
Complete overhaul, maintenance, tuning, diagnostics, cylinder head, valve train, crankshaft, pistons, lubrication system, cooling system (if applicable).
Transmission:
Gearbox disassembly, inspection, assembly, lubrication, clutch operation and adjustment, final drive.
Chassis:
Frame inspection and repair, suspension (forks, rear shock absorber), steering head bearings, wheel bearings, swingarm.
Brakes:
Brake caliper overhaul, master cylinder, brake lines, fluid replacement, bleeding procedures, pad replacement.
Electrical System:
Wiring diagrams, ignition system troubleshooting, lighting, charging system (alternator, rectifier), starter motor, battery, switches, instruments.
Fuel System:
Carburetor overhaul and tuning (e.g., Dell'Orto, Mikuni), fuel lines, fuel tank maintenance.
Exhaust System:
Inspection, gasket replacement, mounting.
Bodywork:
Fairing removal and installation, seat, fenders, fuel tank mounting.
Maintenance:
Regular servicing, oil changes, filter replacements, chain adjustment, brake adjustments, carburetor synchronization, spark plug replacement.
Overhaul:
Complete engine rebuild, gearbox rebuild, carburetor overhaul, suspension rebuild.
Troubleshooting:
Diagnostic flowcharts, common problems and solutions for ignition, fuel, electrical, and mechanical systems.
Assembly Disassembly:
Step-by-step guides for major components.
Special Tools:
Identification and usage of Ducati-specific or recommended tools for certain procedures.
Depth:
Comprehensive, suitable for professional mechanics and experienced DIY enthusiasts. Covers everything from routine maintenance to complete engine and gearbox rebuilds.
Engine Configuration 350:
Air-cooled, 2-valve per cylinder, Desmodromic, 90-degree V-twin
Engine Configuration 650:
Air-cooled, 2-valve per cylinder, Desmodromic, 90-degree V-twin
Displacement 350:
Approximately 350cc (exact figure often varied slightly based on bore/stroke tuning)
Displacement 650:
Approximately 650cc (exact figure often varied slightly based on bore/stroke tuning)
Bore Stroke 350:
Specifics not provided, but derived from Pantah engine architecture.
Bore Stroke 650:
Specifics not provided, but derived from Pantah engine architecture.
Horsepower 350:
Estimated 25-30 HP (actual figures varied based on state of tune and specific model year)
Horsepower 650:
Estimated 45-50 HP (actual figures varied based on state of tune and specific model year)
Torque 350:
Estimated 25-30 Nm
Torque 650:
Estimated 40-45 Nm
Carburetion:
Typically dual Dell'Orto PHM or PHBH carburetors (specific model dependent), or later Mikuni units.
Fuel Type:
Unleaded gasoline, Octane rating as per manufacturer recommendation (likely 91 RON or higher).
Ignition Type:
Electronic ignition (CDI or breaker point systems on earlier models, evolving to electronic).
Braking System Front:
Dual disc brakes with hydraulic calipers (e.g., Brembo).
Braking System Rear:
Single disc brake with hydraulic caliper.
Lighting:
Standard motorcycle lighting system (headlight, taillight, indicators, brake lights).
Oil Change Interval:
Typically every 3,000-5,000 km or annually, whichever comes first (refer to manual for exact specification).
Valve Clearance Check:
Recommended every 6,000-10,000 km due to Desmodromic system (critical adjustment).
Carburetor Sync:
Recommended every 6,000-12,000 km for optimal performance and fuel economy.
Engine Oil Type:
High-quality motorcycle-specific mineral or semi-synthetic oil, SAE 20W-50 or 10W-40 (refer to manual for exact viscosity and API rating).
Engine Oil Capacity:
Approximately 2.5 - 3.0 liters (including filter), check dipstick or sight glass.
Brake Fluid Type:
DOT 4 or DOT 5.1 (check manual, avoid DOT 5 if specified).
Gearbox Oil Type:
GL-5 hypoid gear oil or specific motorcycle gearbox oil (refer to manual).
Desmodromic Maintenance:
Requires precise adjustment and can be complex; neglect leads to poor running and potential damage.
Electrical Reliability:
Older wiring harnesses can degrade, leading to intermittent electrical issues; proper routing and protection are key.
Carburetor Tuning:
Dell'Orto carburetors require regular cleaning and precise jetting for optimal performance, especially with age.
Shaft Drive Maintenance:
Requires periodic lubrication of the final drive unit, and check for wear in universal joints.
Oil Filter Example:
Commonly used equivalent filters for this era might be found from brands like Champion, HiFloFiltro, or K&N, specific part numbers would need cross-referencing or manual consultation.
Air Filter Example:
Specific part numbers vary by exact model year and airbox configuration; manual consultation required.
Heritage Focus:
Ducati is renowned for its V-twin engines, Desmodromic valve actuation, and sporting heritage.
Model Lineage:
The Alazzurra models were part of Ducati's evolution from the Pantah platform, offering a more touring-oriented or conventionally styled alternative to the pure sportbikes, and notably featuring shaft drive.
Production Period:
Produced in the early to mid-1980s.
Design Awards:
While specific awards for the Alazzurra are not widely documented, Ducati motorcycles of this era were generally praised for their Italian styling and engineering.
Owner Satisfaction:
Owners typically rate these bikes highly for their character, performance, and distinctive sound, though maintenance demands are acknowledged.
Certification Standards:
N/A for a workshop manual.
