TUNING THE ENGINE 17
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K00497-01
When the throttle slide is 3/4 open, the influence of the main jet is greatest. The clip position and the idling jet
have only minimal influence.
When the throttle slide is fully open, the influence of the main jet is greatest. The clip position and the idling jet
have only minimal influence.
Needle overview
The jet needles available are shown in the following table.
402674-01
Column 2 corresponds to a needle in the standard position.
Column 1 corresponds to a needle which is half a clip leaner.
Column 3 corresponds to a needle which is half a clip richer.
Column 4 specifies the diameter of the first cylindrical part of the needle. The smaller the diameter of the first
cylindrical part of the needle, the richer the mixture preparation. The larger the diameter of the first cylindrical
part of the needle, the leaner the mixture preparation. The first cylindrical part of the needle has the greatest
influence in the lowest load range.
Info
The top right jet needle A3 corresponds to the richest setting of the carburetor, and the bottom left jet
needle F1 corresponds to the leanest. The optimal carburetor tuning is shown under the respective model.
B00075-10
Clip position
1... 5 Clip position from above
The five possible clip positions are shown here.
The carburetor tuning depends on the defined ambient and operat-
ing conditions.
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