2009 KTM 50 SX, 50 SX Junior & 50 SX Mini Service & Repair Manual
KTM Models Covered & Key Technical Specifications
Models: KTM 50 SX, KTM 50 SX Junior, KTM 50 SX Mini
Model Years: 2009
Technical Data:
- Fork overhang: 10–17 mm (0.39–0.67 in)
- Fork oil volume: 210 ml (7.1 fl. oz.)
- Fork oil grade: SAE 7.5
- Air chamber length: 100 ± 2.5 mm (3.94 ± 0.098 in)
- Static sag (50 SX): 20 mm (0.79 in)
- Static sag (50 SX Junior/Mini): 15 mm (0.59 in)
- Riding sag (50 SX): 45–55 mm (1.77–2.17 in)
- Riding sag (50 SX Junior/Mini): 40–50 mm (1.57–1.97 in)
- Rebound damping (50 SX): 10 clicks
- Rebound damping (50 SX Junior/Mini): 12 clicks
- Chain tension: 5–8 mm (0.2–0.31 in)
- Gear oil capacity: 0.20 liters (0.21 qt)
- Gear oil type: ATF Dexron 3
- Tire pressure (off-road): 1.0 bar (15 psi)
- Shock absorber gas pressure: 10 bar (145 psi)
- Shock absorber fluid: SAE 2.5
KTM Manual Features & Content Preview
- Covers the 2009 KTM 50 SX, 50 SX Junior, and 50 SX Mini minibikes with detailed engine and chassis setup specifications.
- Official KTM factory publication (Article no. 3206060en), spanning 159 pages of in-depth technical workshop information.
- Features comprehensive torque tables, wiring diagrams, and exact component assembly sequences for professional reference.
- Serves as the primary source for 3206060en series maintenance and complete engine repair procedures.
Component and Engine Procedures
This 2009 KTM 50 SX service manual details essential mechanical maintenance tasks across the engine, chassis, and electrical systems. Core chapters break down engine removal, cylinder disassembly, piston sizing, and exact carburetor tuning for all three variants. It outlines strict assembly sequences for the crankshaft, transmission shafts, and kickstarter mechanisms. You will also find specific gear oil capacities alongside mandatory fluid specifications. To accurately evaluate engine serviceability during a repair operation, technicians rely on the provided tolerance charts and wear limits for both the cylinder and piston.
Suspension and Chassis Specifications
Dialing in the suspension is critical for minibikes. This documentation provides precise settings for front fork oil volumes and shock absorber gas pressures. It supplies factory reference values for static and riding sag, aiding in chassis setup tailored to different rider weights. Safety heavily depends on proper assembly. Always review the exact torque specifications listed for critical fasteners like triple clamp bolts, wheel spindles, and engine carrying screws before tightening. Because these high-performance machines require precise handling, all maintenance should be performed by or under the guidance of a certified professional to ensure safe operation. Additional sections cover brake system servicing, outlining fluid replacement standards and lining wear limits for front and rear calipers.
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