KTM 50 SX User Manual (English)

Other manuals for KTM 50 SX

Owner's Manual91 pages

Repair Manual159 pages

Questions and Answers:

M
Monique RobinsonAug 17, 2025
Why is my KTM 50 SX Motorcycle engine overheating?
- S
  Stephanie ButlerAug 18, 2025
  If your KTM Motorcycle engine is overheating, check the following: ensure there's enough coolant in the system, and bleed it if necessary. Clean the radiator fins with a water jet. Use a branded anti-freeze coolant. Ride faster or reduce clutch spring preload. Replace any pinched or kinked water hoses. Readjust the ignition timing and secure screws. Measure and adjust the compression ratio. Possible causes include insufficient coolant, clogged radiator fins, frothing in the cooling system, slow driving with clutch slippage, pinched water hoses, incorrect ignition timing, and incorrect compression ratio.
J
Jennifer SampsonAug 21, 2025
Why does my KTM Motorcycle have less engine power?
- R
  Rebecca Alvarez DVMAug 21, 2025
  If your KTM Motorcycle engine has less power, you should clean or replace the air filter. Blow through the fuel pipe and clean the carburetor. Tighten the spark plug. Check the exhaust system for damage. Check and adjust the ignition. Replace the reed paddles or reed valve housing. Overhaul the engine. This can happen because of an obstructed air filter, partly interrupted or blocked fuel supply, loss of compression due to a loose spark plug, damaged exhaust system, not enough preignition, tensionless or damaged reed paddles, or wear.
D
Diana MartinezAug 25, 2025
What to do if KTM Motorcycle engine splutters into the carburetor?
- L
  Lauren LeonAug 25, 2025
  If your KTM Motorcycle engine splutters into the carburetor, you should clean the fuel pipes, check the tank aeration, and clean it if necessary. Fit the correct spark plug. Check if the intake flange and carburetor are firmly set. This may be caused by a lack of fuel, a spark plug with an incorrect heat value, or the engine taking air out of control.
R
richardmooreAug 28, 2025
What to do if KTM Motorcycle engine is stalling?
- H
  Heather MendozaAug 28, 2025
  If your KTM Motorcycle engine is stalling or running with a four-stroke cycle, you should clean the carburetor, and if necessary, replace the float needle and adjust the level. Also, tighten the jets. This issue may arise if the carburetor overflows due to a level that is adjusted too high, a dirty or enlarged float needle seating, or loose carburetor jets.
R
Richard PeckAug 31, 2025
How to fix high rpm misfiring on a KTM Motorcycle?
- K
  kevin88Aug 31, 2025
  To resolve high RPM misfiring in your KTM Motorcycle, refer to the technical data section for the correct spark plug. Check and seal the ignition socket connector with silicon. This issue can be caused by an incorrect heat range or low-quality spark plug, or a loose, corroded, or non-conductive ignition socket connector.
M
mfrankSep 3, 2025
Why KTM 50 SX Motorcycle engine is not running at idle?
- K
  Kimberly SimmonsSep 4, 2025
  To fix a KTM Motorcycle engine without idle running, readjust the idle running or replace the idle adjusting screw. Examine the ignition system. Overhaul the engine. This problem may be caused by the idle adjusting screw being out of adjustment, a damaged ignition system, or wear.
J
jacobjohnsonSep 7, 2025
What causes excessive oil to escape from KTM Motorcycle transmission breather tube?
- S
  Scott CastilloSep 7, 2025
  If there is excessive oil escaping from the transmission breather tube of your KTM Motorcycle, correct the transmission oil level. This is caused by an excessive oil quantity in the transmission.
P
Patrick AndrewsSep 10, 2025
Why is my KTM 50 SX emitting white smoke?

KTM 50 SX Specifications

General

Displacement	49 cm³
Cooling System	Liquid cooled
Transmission	Single-speed automatic
Starter	Kickstarter
Front Brake	Disc brake
Rear Brake	Disc brake
Weight (without fuel)	41.5 kg
Seat Height	684 mm
Engine Type	Single cylinder, 2-stroke
Front Suspension	WP XACT 35 USD fork, Ø 35 mm
Rear Suspension	WP monoshock
Fuel Tank Capacity	2.3 liters