KTM 250 EXC-F AUS, Руководство пользователя

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TUNING THE ENGINE
86
15.4
Carburetor - adjusting the idle speed
x
600684-10
–
Screw in idle adjusting screw

all the way and then turn it to the prescribed basic
setting.
Guideline
Idle mixture adjusting screw (All EXC
‑
F models)
Open 1.25 turns
Idle mixture adjusting screw (XCF
‑
W SIX DAYS)
Open 1.5 turns
Adjustment tool for mixture control screw (77329034000)
–
Run the engine until warm.
Guideline
Warm-up time
≥
5 min
Danger
Danger of poisoning Exhaust gases are poisonous and inhaling them may
result in unconsciousness and/or death.
–
When running the engine, always make sure there is sufficient ventila-
tion, and do not start or run the engine in an enclosed space without an
effective exhaust extraction system.
–
Adjust the idle speed with adjusting screw

.
Guideline
Choke function deactivated
–
The choke lever is pushed in to the stop.
(EXC
‑
F AUS, XCF
‑
W SIX DAYS) ( p. 21)
Choke function deactivated
–
The choke lever is pushed back to the stop.
(EXC
‑
F EU, EXC
‑
F Factory Edition, EXC
‑
F SIX DAYS) ( p. 11)
Idle speed 1,400… 1,500 rpm
–
Turn idle adjusting screw

slowly clockwise until the idle speed begins to fall.
–
Note the position and turn the idle adjusting screw slowly counterclockwise until
the idle speed falls.
–
Adjust to the point between these two positions with the highest idle speed.
Info
If there is a large engine speed rise, reduce the idle speed to a normal level
and repeat the above steps.
The extreme sport motorcyclist will set the mixture about ¼ of a turn back
from this ideal value (leaner, in a clockwise direction) since the engine
becomes hotter in sporting use.
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 fit a smaller idling jet.
The idle adjusting screw must not be opened more than two turns. If more
than two turns are necessary (rich mixture), use a larger idling jet.
After changing the idling jet, repeat the adjusting steps from the beginning.
–
Adjust the idle speed with adjusting screw

.
Guideline
Choke function deactivated
–
The choke lever is pushed in to the stop.
(EXC
‑
F AUS, XCF
‑
W SIX DAYS) ( p. 21)
Choke function deactivated
–
The choke lever is pushed back to the stop.
(EXC
‑
F EU, EXC
‑
F Factory Edition, EXC
‑
F SIX DAYS) ( p. 11)
Idle speed 1,400… 1,500 rpm
Info
Following extreme air temperature or altitude changes, adjust the idle speed
again.