🏷️ Basic Information Identification Make: KTM Model: 125 SX / 150 SX Year: 2017 Category: Motocross Motorcycle Market Segment: Competition / Off-Road 📋 Manual Details Coverage Areas General Repair: A-Z Maintenance: Included Diagnostics: Included Wiring Schematics: Included Electrical Systems: Included Engine: Included Fuel System: Included Transmission: Included Suspension: Included Brakes: Included Steering: Included Cooling System: Included Exhaust System: Included Lubrication System: Included Ignition System: Included Charging System: Included Frame Body: Included Wheels Tires: Included Instrumentation: Included Control System: Included Emission Control: Included Page Count Estimated Pages: Comprehensive (exact number not specified, but implies full factory documentation) Manual Type Type: Factory Service Repair Manual Format: PDF Distribution: Digital Download Language Language: English Compatibility Operating Systems: Windows, macOS Requirements Software: Adobe PDF Reader, WinZip (Free) Features Printability: Yes (individual pages or sections) Zoom Functionality: Yes (for diagrams and illustrations) ⚙️ Engine Specifications Primary Engine Type: Two-stroke, Single Cylinder Displacement 125: 124.8 cm³ (approx. 7.62 cu in) Displacement 150: 143.9 cm³ (approx. 8.78 cu in) Bore Stroke 125: 54 x 54.5 mm (approx. 2.13 x 2.15 in) Bore Stroke 150: 58 x 54.5 mm (approx. 2.28 x 2.15 in) Fuel System Carburetor: Keihin PWK 38 (or similar specific to model) Fuel Type: Unleaded Premium Gasoline (RON 95 or higher recommended) Fuel Mixture: Pre-mix (specified oil-to-fuel ratio in manual) Cooling System Type: Liquid-cooled Lubrication Type: Premix (engine oil mixed with fuel) Ignition System: Digital CDI (KTM specific) Starter System: Kickstarter 🔧 Transmission Standard Type: 6-speed, constant-mesh Clutch: Multi-disc wet clutch, hydraulically operated (possibly DDS or similar) Features Gear Ratios: Specific ratios detailed within the manual 📐 Dimensions Weights Dry Weight 125: Approx. 87.2 kg (192.2 lbs) Dry Weight 150: Approx. 87.2 kg (192.2 lbs) Curb Weight: Not explicitly stated but implies inclusion of all fluids and operational setup Chassis Frame Type: Central double-cradle type, steel (CrMo) 🛡️ Safety Features Features Brakes: Hydraulic disc brakes, front and rear (Brembo components typically used) Suspension: WP Suspension (Upside-down front forks, Monoshock rear suspension - specific models like AER 48 front fork) Tire Type: Competition Off-road (knobby tires) Handlebars: Fatbar handlebars with knuckle protection (standard) Footpegs: Wide, serrated footpegs for grip 🔧 Maintenance Service Intervals Oil Change: Specified intervals for gearbox oil and pre-mix (detailed in manual) Air Filter Cleaning: Recommended at regular intervals based on riding conditions Spark Plug Inspection: Recommended at regular intervals Valve Clearance: N/A (Two-stroke engine) Fluid Specifications Gearbox Oil: SAE 10W/50 or 15W/50, specific KTM or Motorex recommended (detailed in manual) Coolant: High-quality coolant (50% ethylene glycol, 50% distilled water) with corrosion inhibitors Brake Fluid: DOT 4 Clutch Fluid: Mineral oil or DOT fluid (specific to hydraulic clutch system, detailed in manual)