Carburetor - Adjusting Idle (50 Sx Junior, 50 Sx Mini) - KTM 50 SX Owner's Manual
Ktm 50 sx series motorcycles owner's manual
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Also See for 50 SX:
- Repair manual (159 pages) ,
- Owner's manual (91 pages) ,
- Setup instructions (19 pages)
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MAINTENANCE WORK ON CHASSIS AND ENGINE
Carburetor - adjusting idle
9.80
–
Adjust to the point between these two positions with the highest idle speed.
Info
If there is a big engine speed rise, reduce the idle speed to a normal level
and repeat the above steps.
If the procedure described here does not lead to satisfactory results, the
cause may be a wrongly dimensioned idling jet.
If you can turn the idle adjusting screw to the end without any change of
engine speed, you have to install a smaller idling jet.
After changing the idling jet, start from the beginning with the adjusting
steps.
Following extreme air temperature or altitude changes, adjust the idle speed
again.
(50 SX Junior, 50 SX Mini)
x
–
Screw in the idle mixture adjusting screw
scribed basic setting.
Requirement
(50 SX Junior)
Idle air adjustment screw
Open
(50 SX Mini)
Idle air adjustment screw
700522-01
Open
–
Run the engine until warm.
Requirement
Warm-up time
Danger
Danger of poisoning Exhaust gases are poisonous and can result in uncon-
sciousness and/or death.
–
–
Adjust the idle speed with the adjusting screw
Requirement
Choke function deactivated – The choke lever is pushed down all the way.
(
p. 11)
Idle speed
–
Turn the idle mixture adjusting screw
begins to fall.
–
Note the position and turn the idle mixture adjusting screw counterclockwise slowly
until the idle speed falls.
–
Adjust to the point between these two positions with the highest idle speed.
Info
If there is a big engine speed rise, reduce the idle speed to a normal level
and repeat the above steps.
If the procedure described here does not lead to satisfactory results, the
cause may be a wrongly dimensioned idling jet.
If you can turn the idle mixture adjusting screw to the end without any
change of engine speed, you have to install a smaller idling jet.
After changing the idling jet, start from the beginning with the adjusting
steps.
Following extreme air temperature or altitude changes, adjust the idle speed
again.
When running the engine, always make sure there is sufficient venti-
lation, and do not start or run the engine in a closed space without an
effective exhaust extraction system.
until it stops and then turn to the pre-
3.5 turns
1 turn
≥ 5 min
.
1,400... 1,500 rpm
clockwise slowly until the idle speed
53
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