Carburetor - Adjusting Idle - KTM 690 Owner's Manual

MAINTENANCE WORK ON CHASSIS AND ENGINE

Carburetor - adjusting idle

8.82
x
–
Turn the tap handle
position. (Figure 600016-10
–
Remove the front fuel tank. (
–
Screw in the idle adjusting screw
setting.
Specification
Idle mixture adjusting screw
Open
–
Let the engine run until it is warm.
Specification
Warm-up time
600105-10
–
Adjust the idle speed with the adjusting screw
Specification
Choke function deactivated – The choke knob is engaged in the guide.
( P. 18)
Idle speed
600106-10
–
Turn the idle adjusting screw
–
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 big 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 1/4 of a turn back
from this ideal value (leaner, in a clockwise direction) since the engine
600105-10
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, start from the beginning with the adjusting
steps.
–
Adjust the idle speed with the adjusting screw
Specification
Choke function deactivated – The choke knob is engaged in the guide.
( P. 18)
Idle speed
Info
Following extreme air temperature or altitude changes, adjust the idle speed
again.
of the fuel tap to the R REAR

P. 18)
P. 55)
until it stops and then to the prescribed basic

2 turns
≥ 5 min
.

1600... 1700 rpm
slowly until the idle speed begins to fall.

.

1600... 1700 rpm
66