Eureka HD4570 ユーザーズマニュアル

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How to Check and Clear Hose Blockages
Low suction or poor pickup may be due to a blockage in the vacuum cleaner.
  1.  Remove hose and check suction at end of hose - if little or 
no suction, check disposable dust bag. Change if needed. 
If no improvement proceed to Step 2.
NOTE:  Turn off the switch and unplug the electrical 
cord before clearing hose.
  2.  Remove the front bag cover.  To remove hose adapter from 
opening, twist hose adapter clockwise and lift upward.
   
Once the hose is removed from the cleaner check for any 
obstructions that may be in the hose. Any obstructions can 
be removed by using a blunt instrument to clear the hose. 
Flexing the hose may help loosen the clog.
  3.  Reinstall the hose after clearing the clog. Make sure the 
hose is inserted into the top of the vacuum cleaner.
NOTE:  If no improvement in performance on carpet, 
proceed to following page.
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2.  Remove front bag cover.
3.  Remove hose adapter by twisting clockwise and lifting 
upward. Check hose for blockages.
1.  Remove hose and check suction at end of 
hose.
4.  Reinstall the hose and replace front bag cover.
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Hose Adapter
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