Segment:
High-performance motocross (SX) and cross-country (XC) competition off-road motorcycles.
Key Competitors:
Yamaha YZ450F, Honda CRF450R, Kawasaki KX450F, Suzuki RM-Z450, Husqvarna FC 450.
Vehicle Highlights:
Lightweight chassis, powerful 450cc single-cylinder engine, advanced WP suspension (AER forks), hydraulic clutch, Brembo brakes, electronic rider aids (traction control, launch control on some configurations).
Benefit:
Provides the essential, accurate, and detailed information required by technicians and owners to maintain, diagnose, and repair the 2017 KTM 450 SX-F and XC-F models to factory specifications, ensuring optimal performance and longevity.
Engine Systems:
Engine assembly, disassembly, overhaul, valve train, piston/cylinder, crankshaft, camshafts, lubrication system, cooling system (radiator, water pump), fuel injection system (throttle body, injectors, fuel pump), ignition system, exhaust system, emissions control.
Transmission Drivetrain:
Clutch operation and adjustment, gearbox internal inspection and repair, shift mechanism, final drive (chain and sprockets), gearbox lubrication.
Chassis Suspension Brakes:
Frame inspection and repair, suspension fork (WP AER 48) servicing, shock absorber servicing, steering system, wheel bearing replacement, brake system (hydraulic calipers, master cylinders, brake lines, fluid bleeding), rear suspension linkage and bearings.
Electrical System:
Wiring diagrams, battery maintenance, starter motor, alternator, lighting systems, ECU (Engine Control Unit) diagnostics and troubleshooting, sensors, instrumentation, handlebar controls.
Bodywork Plastics:
Fairing removal and installation, seat removal, fuel tank removal and installation, fender inspection and replacement.
Routine Maintenance:
Oil and filter changes, air filter cleaning/replacement, chain adjustment and lubrication, spark plug inspection/replacement, brake pad inspection, tire pressure checks, coolant level checks.
Troubleshooting:
Diagnostic procedures for common starting issues, running problems, electrical faults, and performance anomalies using symptom-based troubleshooting guides.
Repair Overhaul:
Complete engine rebuild procedures, gearbox disassembly and assembly, suspension fork and shock absorber rebuilds, brake system overhauls, electrical component replacement.
Technical Data Specs:
Torque specifications for all fasteners, engine tolerances, valve clearances, diagnostic trouble codes (DTCs), electrical resistance values, fluid capacities and specifications.
Depth:
Comprehensive, intended for dealership technicians and advanced DIY mechanics. Covers detailed disassembly, inspection, repair, and reassembly of all major vehicle components.
File Type:
PDF (Portable Document Format)
Quality:
High-resolution scans, ensuring clarity of diagrams, illustrations, and text. Printable pages.
Binding:
N/A (Digital PDF download)
Paper Type:
N/A (Digital PDF download)
Engine Type:
4-stroke, single cylinder, SOHC, liquid-cooled
Displacement:
449.3 cc (27.4 cubic inches)
Bore X Stroke:
95 mm x 63.4 mm (3.74 x 2.5 inches)
Compression Ratio:
12.5:1 (approximate, check manual for exact specification)
Horsepower:
Estimated 60+ HP (at crank, varies by tuning and configuration)
Torque:
Estimated 35-40 lb-ft (at crank, varies by tuning and configuration)
Fuel Delivery:
Keihin MX-FI (Electronic Fuel Injection) with 44mm throttle body
Fuel Type:
Unleaded gasoline, minimum 91 octane (RON+MON)/96 AKI recommended.
Oil Type:
JASO MA/MA2 certified motorcycle engine oil, SAE 10W-50 or 10W-40 (check manual for precise specification and capacity).
Transmission Type:
4-speed or 6-speed (check specific model variant, SX-F typically 6-speed, XC-F typically 4 or 6-speed)
Gear Ratios:
Specific gear ratios detailed in the manual.
Clutch Type:
Hydraulically actuated DDS (Damped Diaphragm Steel) clutch, Wet multi-disc clutch.
Transmission Oil:
Separate lubrication circuit; SAE 75W-90 API GL4 transmission oil recommended (check manual for exact type and capacity).
Braking System:
Hydraulic disc brakes front and rear. Brembo calipers and master cylinders. Wave-style brake discs.
Traction Control:
Available on select configurations via handlebar-mounted switch (traction control modes selectable).
Launch Control:
Available on select configurations via handlebar-mounted switch (engine management for optimal starts).
Frame Construction:
Chromium-molybdenum steel central double-cradle frame.
Handlebar:
Neken aluminum handlebar with ODI lock-on grips.
Instrumentation:
Digital multi-function display unit with hour meter, speed indicator, RPM indicator, and warning lights.
Engine Management:
ECU controlled fuel injection and ignition timing. Selectable engine maps (e.g., standard, aggressive) and traction control modes via handlebar switch (depending on model variant).
Diagnostic Port:
Standard diagnostic connector for use with KTM diagnostic tools.
Engine Oil Change:
Recommended every 15 hours of riding or annually, whichever comes first. (Refer to manual for specific conditions).
Air Filter Cleaning:
Recommended every 5-10 hours of riding, depending on conditions. Check before each ride.
Spark Plug Inspection:
Recommended every 15-20 hours of riding. Replacement interval dependent on inspection.
Valve Clearance Check:
Recommended every 30-40 hours of riding. Crucial for engine longevity.
Engine Oil Spec:
SAE 10W-50 or 10W-40, JASO MA/MA2 certified motorcycle engine oil.
Coolant Spec:
Mixture of distilled water and antifreeze (e.g., ethylene glycol based) with corrosion inhibitors. Refer to manual for specific ratio and type.
Brake Fluid Spec:
DOT 4 hydraulic brake fluid.
Transmission Oil Spec:
SAE 75W-90 API GL4 transmission oil.
Common Wear Items:
Clutch plates, chain and sprockets, wheel bearings, fork seals, air filter (due to dust ingress), valve train components (cam lobes, rockers).
Potential Concerns 2017:
Early models of the WP AER 48 forks required careful setup and frequent maintenance. Some owners reported issues with oil leaks in the forks. The engine's peaky power delivery can lead to premature clutch wear if not managed properly. Clutch slave cylinder seals can sometimes be a point of failure.
Manufacturer Origin:
Austria
Design Philosophy:
KTM's 'Ready to Race' philosophy, focusing on lightweight design, powerful engines, and superior suspension for competitive off-road performance.
Key Updates 2017:
Significant updates for 2017 included a new engine architecture, redesigned chassis, WP AER 48 front forks with air spring, updated bodywork, and refined electronics.
