CARBURETOR FL-9
Mixture control screw
For the proper adjustment of the idle speed the
engine must have reached its operating
temperature.
Make sure that the vehicle consumers
(e.g. headlight) are switched on prior to
modifying the A/F mixture in order to
ensure that idle speed will not drop
below a level required for the proper
vehicle operation.
If the mixture is too lean, the air adjustment screw
shall be gradually screwed in clockwise by quarter
turns.
When the idle speed decreases during this A/F
mixture modification, the idle speed value has to
be set back to the desired value. Carry out this
adjustment by means of the idling adjusting speed.
If necessary, repeat this step every time the screw
is turned in by a quarter turn.
If the mixture is too rich, the idle speed shall be
modified accordingly. The mixture control screw
shall be turned out anticlockwise while the desired
idle speed value has to be set with the help of the
idling adjusting screw.
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