If a very unsmooth engine idling becomes normal by holding
the idle air bore or idle air jet closed, the bore in the insulating flange
is covered partially by the gasket.

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Remove carburettor - see 13 11 100.
Detach pressure rod (1) and connecting rod (2).
Loosen connecting rod (3).


Siehe auch 13 11 100
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Remove socket head screws.
Replace insulating flange (4).

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