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Tristar: How to Adjust the Mouthpiece for Standard Models

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The following procedure details how to adjust the mouthpiece of your Tristar H81 standard model.

To adjust mouthpiece for standard models
  1. Hold the receiver securely against your ear with one hand.  
  2. With the other hand, adjust the voice tube so that the tip sits two finger widths from the corner of your mouth. NOTE: To prevent breath noise, avoid position the voice tube in front of your mouth.