GAS GAS MC 85 2023, Owner'S Manual

Page: 97 / 176

TUNING THE ENGINE 15
95
402797-01
Column 2 corresponds to a needle in the standard position.
Column 1 corresponds to a needle which is half a clip leaner.
Column 3 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. The larger the diameter of the first cylindrical part of the needle, the leaner the
mixture. The first cylindrical part of the needle has the greatest influence in the lowest load range.
Info
The top right jet needle A2 corresponds to the richest setting of the carburetor, and the bottom left jet needle E1
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 operating
conditions.
15.4 Carburetor
–
idle setting
402799-10
The idle setting of the carburetor has a big influence on the starting
behavior, stable idle speed, and the response to throttle opening. This
means that an engine with a correctly set idle speed will be easier to
start than one with an incorrectly set idle speed.
Info
The carburetor and its components are subject to increased
wear caused by engine vibration. Wear can result in malfunc-
tioning.
The factory setting for the carburetor is set for the following values.
Height above sea level 301 … 750 m (988 … 2,461 ft)
Ambient temperature 16 … 24 °C (61 … 75 °F)
Super unleaded (98 octane) mixed with 2-stroke engine oil (1:40)
( p. 118)
The idle speed is adjusted with adjusting screw
1
.
The idle mixture is adjusted using the idle air adjusting screw
2
.