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| First pull breather hose -1- from activated charcoal filter on activated charcoal filter system solenoid valve 1 -N80--2-. |
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| Then connect hand vacuum pump -VAS 6213- to hose -1- as shown. |
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| Operate hand vacuum pump -VAS 6213- several times. Vacuum must not build up. |
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| Check breather opening -3- on lower activated charcoal filter -4- for soiling, clean if necessary. |
| If vacuum does not build up: |
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| Temporarily seal breather opening -3- and operate vacuum pump again several times. Vacuum must build up. |
| If vacuum does not build up: |
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| Renew activated charcoal filter. |
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