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6.1.11.3.4. Vacuum diaphragm of a butterfly valve of the secondary camera

For check of a vacuum diaphragm it is necessary to use the mechanical vacuum pump and the manometer.

PERFORMANCE ORDER
The vacuum pump create depression about 300 Mbar through a hose, the closest from the carburetor case. Check that depression in the block kept a long time. In the presence of leaks eliminate it or replace the corresponding element.