KTM 50 SX 2012 User Manual

91 pages

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OWNER'S MANUAL 2013

50 SX

50 SX Mini

Art. no. 3211854en

Default Chapter4
- Table of Contents4
1 Means of Representation6
- Symbols Used6
- Formats Used6
2 Safety Advice7
- Use Definition - Intended Use7
- Degrees of Risk and Symbols7
- Tampering Warning7
- Safe Operation7
- Protective Clothing8
- Work Rules8
- Environment8
- Owner's Manual8
3 Important Information9
- Guarantee, Warranty9
- Operating and Auxiliary Substances9
- Spare Parts, Accessories9
- Service9
- Figures9
- Customer Service9
4 View of Vehicle10
- View of the Vehicle from the Left Front (Example)10
- View of the Vehicle from the Right Rear (Example)11
5 Serial Numbers12
- Chassis Number12
- Type Label12
- Engine Number12
- Fork Part Number12
- Shock Absorber Part Number13
6 Controls14
- Hand Brake Lever14
- Throttle Grip14
- Kill Switch14
- Opening Filler Cap14
- Closing Filler Cap15
- Opening Oil Tank Cap (50 SX Mini)15
- Closing Oil Tank Cap (50 SX Mini)15
- Fuel Tap15
- Choke (50 SX)16
- Choke (50 SX Mini)16
- Kickstarter16
- Foot Brake Lever16
- Plug-In Stand16
7 Preparing for Use17
- Advice on First Use17
- Running in the Engine18
8 Riding Instructions19
- Checks and Maintenance Measures When Preparing for Use19
- Starting19
- Starting up20
- Riding20
- Braking20
- Stopping, Parking20
- Transport21
- Refueling21
- Filling up with Oil (50 SX Mini)22
9 Service Schedule23
10 Tuning the Chassis25
- Adjusting the Rebound Damping of the Shock Absorber25
- Measuring Rear Wheel Sag Unloaded25
- Checking the Static Sag of the Shock Absorber25
- Checking the Riding Sag of the Shock Absorber26
- Adjusting the Spring Preload of the Shock Absorber26
- Adjusting the Riding Sag27
- Handlebar Position27
- Adjusting Handlebar Position27
- Adjusting Seat Height28
11 Maintenance Work on the Chassis29
- Raising the Motorcycle with a Lift Stand29
- Removing the Motorcycle from the Lift Stand29
- Cleaning the Dust Boots of the Fork Legs29
- Removing the Fork Protector30
- Installing the Fork Protector30
- Removing the Fork Legs30
- Installing the Fork Legs31
- Removing the Lower Triple Clamp31
- Installing the Lower Triple Clamp32
- Checking Play of Steering Head Bearing33
- Adjusting the Play of the Steering Head Bearing34
- Greasing the Steering Head Bearing34
- Dismounting the Start Number Plate35
- Installing the Start Number Plate35
- Dismounting the Front Fender35
- Installing the Front Fender35
- Removing the Shock Absorber36
- Installing Shock Absorber36
- Removing the Seat36
- Mounting the Seat37
- Removing the Air Filter37
- Installing the Air Filter37
- Cleaning the Air Filter and Air Filter Box38
- Removing Main Silencer38
- Installing the Main Silencer39
- Changing the Glass Fiber Yarn Filling of the Main Silencer39
- Removing the Chain Guard (50 SX)39
- Installing the Chain Guard (50 SX)40
- Removing the Engine Sprocket Cover40
- Installing the Engine Sprocket Cover40
- Checking the Chain for Dirt40
- Cleaning the Chain41
- Checking the Chain Tension41
- Adjusting Chain Tension42
- Checking the Chain, Rear Sprocket, Engine Sprocket and Chain Guide42
- Adjusting the Chain Guide44
- Checking the Frame45
- Checking the Swingarm45
- Checking the Throttle Cable Routing45
- Checking the Rubber Grip46
- Additionally Securing the Rubber Grip46
12 Brake System47
- Checking Play of Handbrake Lever47
- Adjusting the Play of the Hand Brake Lever47
- Adjusting the Basic Position of the Hand Brake Lever47
- Checking Brake Discs48
- Checking Front Brake Fluid Level48
- Adding Front Brake Fluid49
- Checking the Front Brake Linings50
- Removing Front Brake Linings50
- Installing the Front Brake Linings50
- Changing the Front Brake Linings51
- Checking the Free Travel of the Foot Brake Lever52
- Adjusting the Free Travel of the Foot Brake Lever52
- Adjusting the Basic Position of the Foot Brake Lever52
- Checking Rear Brake Fluid Level53
- Adding Rear Brake Fluid53
- Checking the Rear Brake Linings54
- Removing Rear Brake Linings54
- Installing the Rear Brake Linings55
- Changing the Rear Brake Linings56
13 Wheels, Tires57
- Removing the Front Wheel57
- Installing the Front Wheel57
- Removing Rear Wheel58
- Installing the Rear Wheel58
- Checking the Tire Condition58
- Checking Tire Air Pressure59
- Checking Spoke Tension59
14 Cooling System61
- Checking the Antifreeze and Coolant Level61
- Checking the Coolant Level62
- Draining the Coolant62
- Refilling Coolant63
15 Tuning the Engine64
- Checking the Installation Position of the Throttle Grip64
- Checking the Play of the Throttle Cable64
- Adjusting the Play in the Throttle Cable64
- Carburetor - Idle (50 SX)65
- Carburetor - Idle (50 SX Mini)65
- Carburetor - Adjusting Idle Speed (50 SX)65
- Carburetor - Adjusting Idle Speed66
- 50 SX Mini)66
- Emptying the Carburetor Float Chamber67
- Checking the Clutch Setting67
- Removing the Clutch Cover68
- Adjusting the Clutch68
- Installing the Clutch Cover69
16 Service Work on the Engine70
- Checking Oil Level (50 SX Mini)70
- Bleeding the Oil Pump (50 SX Mini)70
- Checking the Gear Oil Level71
- Changing the Gear Oil71
- Draining the Gear Oil72
- Filling up with Gear Oil72
- Adding Gear Oil72
17 Cleaning, Care74
- Cleaning Motorcycle74
18 Storage75
- Preparing for Use after Storage75
- Troubleshooting76
19 Troubleshooting78
- Technical Data78
- Engine78
- Engine Tightening Torques78
- Carburetor with Carburetor Tuning79
- SX Mini79
- Capacities79
- Gear Oil79
- Coolant79
- Fuel79
- Chassis79
- Tires80
- Fork80
- SX Mini80
- Shock Absorber81
- SX Mini81
- Chassis Tightening Torques82
20 Technical Data78
21 Substances83
22 Auxiliary Substances85
23 Standards87
- Index88

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Questions and Answers:

A
Allison BakerJul 26, 2025
Why KTM 50 SX 2012 engine turns but won't start?
- J
  Jennifer MunozJul 26, 2025
  If your KTM Motorcycle engine turns but won't start, there might be several reasons. It could be due to an operating error, old fuel in the float chamber (if the motorcycle was out of use for a long time), or an interrupted fuel feed. The spark plug might be oily or wet, or the electrode distance (plug gap) of the spark plug could be too wide. Another potential cause is a loose or oxidized connector or ignition coil.