Adjusting The Castle 777 Air Vent Bellows

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Now That You Have Installed Your New Air Vent Bellows, You Will Need To Make Adjustments To Insure Proper & Efficient Operation



How To Adjust The Castle 777 Air Vent Bellows Assembly


  1. Reach into the back of the liner and loosen the hex head nut on the bellows stem
  2. Turn the bellows stem clockwise, with a screw driver, until it touches the back of the shell
  3. Unscrew the bellows stem one (1) turn counterclockwise
  4. Hold the bellows stem in this position with a screwdriver and tighten the hex lock nut

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