Positioning:
The KTM RC 390 is positioned as a premium entry-level supersport motorcycle, offering track-inspired styling and performance for aspiring riders.
Competitors:
Competes with motorcycles like the Kawasaki Ninja 300/400, Yamaha R3, and Honda CBR300R.
Features:
Sharp supersport styling, powerful single-cylinder engine, high-quality suspension components (WP), trellis frame, advanced electronics (e.g., ABS).
Benefit For Owner:
Empowers owners to perform maintenance and repairs themselves, saving time and money, and fostering a deeper understanding of their vehicle.
Engine:
Detailed diagnostics, disassembly, assembly, torque specifications, and overhaul procedures for the single-cylinder engine.
Fuel System:
Fuel injection system components, pressure testing, injector servicing, fuel pump diagnostics, and throttle body calibration.
Cooling System:
Radiator, cooling fan, thermostat, coolant flow, pressure testing, and fluid specifications.
Lubrication System:
Oil pump, oil filter replacement, oil change intervals, and oil specifications.
Ignition System:
Spark plug specifications, ignition coil testing, ECU control, and ignition timing.
Starting Charging:
Starter motor testing, battery maintenance and testing, alternator/generator output checks.
Transmission:
Clutch operation, gearbox disassembly, inspection, reassembly, gear inspection, and lubrication.
Suspension:
Front fork (WP APEX 43), rear shock absorber (WP APEX), adjustment procedures, oil levels, and seal replacement.
Brakes:
Front and rear brake caliper servicing, master cylinder overhaul, brake fluid replacement and bleeding, ABS system diagnostics (if applicable), rotor inspection.
Wheels Tires:
Tire pressure recommendations, wheel bearing inspection and replacement, wheel balancing.
Steering:
Steering head bearing adjustment and replacement, handlebar installation and torque specifications.
Electrical System:
Complete wiring schematics, component identification, troubleshooting electrical faults, fuse box layout, lighting system diagnostics.
Control System:
Throttle control, clutch lever adjustment, brake lever adjustment.
Instrumentation:
Instrument cluster functionality, indicator lights, troubleshooting display errors.
Bodywork:
Fairing removal and installation, seat removal, fuel tank servicing, panel alignment.
Emission Control:
Catalytic converter function, evaporative emission control system (EVAP) if applicable, emissions testing procedures.
Maintenance:
Scheduled maintenance tasks, oil changes, filter replacements, chain adjustment, brake pad replacement, spark plug replacement.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon issues, error code interpretation.
Repair:
Step-by-step instructions for component disassembly, repair, and reassembly.
Diagnostics:
Component testing, electrical system diagnostics, fuel system diagnostics.
Wiring Schematics:
Detailed, vehicle-specific wiring diagrams for all electrical systems.
Depth:
Factory-level detail, covering basic maintenance to complete engine and transmission overhauls.
Compatibility:
Windows Vista (32/64-bit), XP, ME, 98, NT, 2000, and Mac OS.
Requirements:
Adobe PDF Reader and Winzip (free download).
Printability:
All pages are fully printable, allowing for enlarged image printing.
Binding:
Digital (PDF) - no physical binding
Paper Type:
Not applicable (digital format)
Engine Type:
Liquid-cooled, four-stroke, single-cylinder engine with DOHC.
Bore X Stroke:
89 mm x 60 mm
Horsepower:
Approximately 44 hp @ 9,500 rpm (specifications may vary slightly by region)
Torque:
Approximately 35 Nm (25.8 lb-ft) @ 7,250 rpm (specifications may vary slightly by region)
Fuel Delivery:
Bosch EFI (Electronic Fuel Injection) with Keihin throttle body.
Fuel Type:
Unleaded gasoline, minimum 91 octane (RON+MON)/95 RON.
Oil Change Interval:
Typically every 7,500 km (4,660 miles) or 12 months, whichever comes first. Consult manual for exact specification.
Valve Clearance Check:
Typically every 15,000 km (9,320 miles). Consult manual for exact specification.
Engine Oil:
Refer to manual for specific API and JASO specifications (e.g., SAE 15W-50). Capacity typically around 1.1-1.2 liters.
Coolant:
Ethylene glycol based coolant (e.g., Motorex Coolant M3.0 or equivalent). Consult manual for specification and mixture ratio.
Brake Fluid:
DOT 4 (refer to manual for exact type and compatibility).
Common Wear Items:
Chain and sprockets, brake pads, tires, clutch plates (depending on riding style).
Potential Issues:
Some early models may have had minor electrical gremlins or overheating concerns, which are typically addressed through service bulletins or manual updates.
