Segment:
High-Performance Naked Sportbike
Target Audience:
Enthusiast riders seeking to maintain, repair, and understand their KTM 990 Super Duke.
Competitors 2003-2006:
Ducati Monster S4R, Triumph Speed Triple, Aprilia Tuono R, Benelli TnT
Bike Highlights:
Powerful V-Twin engine, sharp handling, aggressive styling, premium components.
Dealer Level Info:
Provides identical technical information used by KTM authorized service centers.
Ease Of Use:
Clear, concise text with detailed illustrations designed for accessibility by individuals with basic mechanical aptitude.
Primary Coverage:
Service and Repair
Secondary Coverage:
Maintenance, Diagnostics, Troubleshooting, Technical Specifications, Scheduled Service Information, Tech Service Bulletins (TSBs), Recall Information
Estimated Page Count:
High (typical comprehensive service manuals range from 500-1000+ pages)
Type:
Service Repair Manual (SRM)
Format:
PDF (Portable Document Format)
Download Type:
Direct Download
Operating Systems:
Windows, macOS, Linux
Powertrain:
Engine (LC8 V-Twin), Clutch, Transmission, Fuel System, Exhaust System
Chassis:
Frame, Swingarm, Suspension (Front & Rear), Steering System, Brakes (Front & Rear), Wheels, Tires
Electrical:
Ignition System, Lighting System, Battery, Starter System, Charging System, Instrument Cluster, Wiring Diagrams
Bodywork And Fittings:
Body Panels, Seat, Fuel Tank, Handlebars, Footpegs, Fairings (if applicable), Fasteners
Maintenance:
Scheduled Maintenance (oil changes, filter replacements, chain adjustment, spark plug service), Tune-ups, Brake System Service, Fluid Checks and Replacements
Repair And Overhaul:
Engine Disassembly and Reassembly, Clutch Inspection and Replacement, Transmission Overhaul, Suspension Fork Service, Brake Caliper Rebuild, Carburetor/Fuel Injection Servicing
Diagnostics And Troubleshooting:
Fault Finding Charts, Symptom-Based Diagnostics, Electrical System Troubleshooting, Engine Performance Issues
Technical Information:
Torque Specifications, Clearance Measurements, Timing Procedures, Wiring Schematics, Component Specifications
Depth:
Comprehensive: From basic owner maintenance to in-depth engine and transmission rebuilds, covering all aspects of repair and diagnostics performed by dealership technicians.
Searchability:
Likely text-searchable if created from digital source or high-quality scan.
Print Readability:
Optimized for digital viewing and printing, with clear text and detailed illustrations.
Binding:
N/A (Digital Download - PDF)
Paper:
N/A (Digital Download - PDF)
Engine Type:
Liquid-cooled, 4-stroke, 75° V-twin, DOHC, 4 valves per cylinder
Engine Code:
LC8 (Liquid Cooled 8 valve)
Bore X Stroke:
98 x 66 mm
Compression Ratio:
11.5:1 (approximate, may vary slightly)
Peak Horsepower:
Approx. 113 hp @ 9,000 rpm
Peak Torque:
Approx. 95 Nm (70 lb-ft) @ 7,000 rpm
Fuel Delivery:
Fuel Injection (EFI) with dual throttle bodies
Ignition:
Electronic ignition, twin spark plugs per cylinder
System:
Wet sump with oil cooler
Length:
Approx. 2,100 mm (82.7 in)
Width:
Approx. 800 mm (31.5 in) (excluding mirrors)
Height:
Approx. 1,150 mm (45.3 in) (excluding mirrors)
Wheelbase:
Approx. 1,450 mm (57.1 in)
Dry Weight:
Approx. 196 kg (432 lbs)
Wet Weight:
Approx. 210 kg (463 lbs) (fully fueled)
Gvwr:
Not typically specified for motorcycles, but implies payload capacity.
Frame Type:
Chromium-molybdenum steel trellis frame
Front Suspension:
WP USD (Upright) front forks, adjustable for preload, compression, and rebound damping
Rear Suspension:
WP Monoshock, adjustable for preload, compression, and rebound damping
Front Brake:
Dual 320 mm discs, radially mounted 4-piston calipers (Brembo)
Rear Brake:
Single 240 mm disc, 2-piston caliper (Brembo)
Wheel Type:
Light alloy cast wheels
Front Wheel Size:
3.50 x 17"
Rear Wheel Size:
5.50 x 17"
Front Tire Size:
120/70-17
Rear Tire Size:
180/55-17
Fuel Capacity:
15 Liters (3.96 US gal)
Safety Ratings:
N/A (Motorcycle safety is assessed via design and handling capabilities, not formal crash ratings like cars.)
Braking:
High-performance Brembo braking system, dual discs front, single disc rear.
Suspension:
Fully adjustable WP suspension allows for optimal handling and stability in various conditions.
Handling:
Trellis frame and aggressive geometry contribute to agile and predictable handling.
Ergonomics:
Designed for rider control and comfort during spirited riding.
Lighting:
Powerful headlight and taillight for visibility.
Infotainment System:
Basic dashboard with analog tachometer, digital speed display, trip meters, clock, and warning lights. No advanced infotainment features expected.
Electronic Aids:
No ABS or traction control on early models (check for specific year updates). Primary focus is on rider control and mechanical feedback.
Connectivity Features:
N/A
ECU Features:
Engine Control Unit (ECU) manages fuel injection and ignition timing for optimal performance and emissions. Manual details ECU diagnostics and potential remapping.
Oil Change Interval:
Typically every 5,000-7,500 km (3,000-4,500 miles) or annually, whichever comes first.
Chain Maintenance:
Lubrication and adjustment recommended every 500-1000 km (300-600 miles).
Valve Clearance Check:
Typically around 15,000-20,000 km (9,000-12,500 miles).
Engine Oil Type:
Synthetic Motorcycle Oil, SAE 10W-50 or 15W-50 (API SG or higher, JASO MA recommended). Specific KTM P/N likely available in manual.
Coolant Type:
Ethylene glycol based coolant with corrosion inhibitors, mixed 50/50 with distilled water.
Brake Fluid Type:
DOT 4 hydraulic fluid.
Clutch Fluid Type:
DOT 4 hydraulic fluid (same as brake fluid).
Fork Oil Type:
Specific WP fork oil grade (e.g., WP Suspension Fluid 5W or equivalent).
Common Issues:
Fuel pump diaphragm failures, potential stator failures, clutch slave cylinder leaks, occasional gearbox notching (depending on maintenance and riding style). The manual would provide diagnostic steps and fixes for these.
Preventative Maintenance:
Regular checks of fuel lines, electrical connections, and proper fluid levels are crucial for longevity.
Brand Focus:
KTM is renowned for its off-road dominance and its expansion into high-performance street motorcycles, particularly in the naked sportbike segment.
Introduction Of Lc8:
The LC8 engine platform debuted in the 950 Adventure, with the Super Duke variant adapting it for aggressive street performance.
Super Duke Philosophy:
The 990 Super Duke represented KTM's commitment to raw power, minimalist design, and a thrilling riding experience.
Manufacturing Location:
Austria (KTM AG)
Key Updates 2003-2006:
Minor updates likely included ECU remapping, suspension tweaks, and cosmetic refinements. The core LC8 platform remained consistent. (Manual would detail these specific changes).
Industry Acclaim:
The 990 Super Duke was generally well-received by motorcycle press for its performance, handling, and aggressive character, often praised as a 'no-compromise' superbike. Specific awards may vary by publication and region.
Performance Ratings:
Consistently rated highly for its powerful engine and agile chassis in contemporary reviews.
Certification:
Meets all relevant emissions and safety standards for its model years and target markets.
