Market Position:
The Ducati 900 Sport Desmo Darmah represents a significant era in Italian motorcycle manufacturing, known for its performance-oriented design and the iconic L-twin Desmodromic engine. It competed in the high-performance motorcycle segment of its time.
Competitive Analysis:
Competed against other large-displacement European and Japanese motorcycles offering sporting capabilities and advanced engineering for the era.
Key Features:
Desmodromic valve system, L-twin engine configuration, sporting chassis, performance-oriented design, Italian craftsmanship.
Systems Covered:
Engine (Desmodromic valve actuation, carburetion, lubrication), Transmission, Clutch, Frame, Suspension (front forks, rear shocks), Brakes (front and rear), Electrical System (ignition, lighting, charging), Fuel System, Exhaust System, Wheels and Tires, Bodywork and Fairings, Controls, Chassis Components, Special Tools
Procedures Included:
Routine Maintenance, Adjustments (valve clearance, carburetor synchronization, chain tension), Troubleshooting, Diagnosis, Removal and Installation of Components, Disassembly and Assembly of Engine and Transmission, Brake System Servicing, Electrical System Testing and Repair, Frame and Suspension Servicing, Torque Specifications, Wear Limits, Special Tool Usage
Technical Depth:
Comprehensive, step-by-step procedures with detailed explanations and pictorial diagrams. Covers basic maintenance to complete engine and transmission rebuilds. Includes diagnostic information, service data, and factory specifications.
Engine Displacement:
900cc (approximately)
Engine Configuration:
72-degree L-twin
Horsepower:
Refer to manual for specific horsepower ratings (typically around 65-70 HP)
Torque:
Refer to manual for specific torque ratings
Carburetion:
Dual Dell'Orto carburetors (typically 36mm or 40mm PHM)
Fuel Type:
Unleaded gasoline (premium recommended)
Major Service Interval:
Refer to manual for specific intervals, typically involving valve adjustments, carb synch, and oil changes.
Engine Oil Type:
Refer to manual for specific oil viscosity and type (e.g., SAE 20W-50 or similar for air-cooled twins).
Brake Fluid Type:
DOT 3 or DOT 4 recommended (check manual for exact specification).
Gearbox Oil:
Refer to manual for specific gearbox oil type and capacity.
Common Issues:
Potential for wear in Desmodromic components if not maintained, carburetor tuning sensitivity, electrical system maintenance, aging fuel lines and seals. The manual addresses these and provides solutions.
Maintenance Schedule Coverage
Maintenance Schedule Coverage:
Includes detailed periodic maintenance charts and recommended service intervals for various components.
Brand Heritage:
Ducati has a long and storied history in motorcycle racing and performance road bikes, renowned for its V-twin (and L-twin) engines and innovation in valve actuation with the Desmodromic system.
Model Evolution:
The 900 Sport Desmo Darmah is part of Ducati's line of large-displacement twins that evolved from earlier models like the 750 GT and 750 Sport. It introduced further refinements and performance enhancements, establishing Ducati's reputation in the sportbike category.
Production Years Of Coverage:
1977-1982
