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Before positioning the puller, loosen the mechanism by backing off the T-handle.
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This view shows the cradle and jaws opened and ready to be positioned around the mouthpiece and receiver.
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The G88 is shown mounted on a Conn 17A with a Getzen mouthpiece. Make sure the cradle and jaws are properly aligned before tightening.
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Here, the G88 is positioned on an older Blessing trumpet with a Bach 7C mouthpiece.
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Hold the G88 securely in your weaker hand and turn the T-handle with your stronger hand. Keep the jaws firmly positioned so they do not slide over the receiver while tightening.
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The same secure grip can be used when removing stuck mouthpieces from a trombone slide or tuba. The examples shown include 12H and Bach trombone applications.
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Place the jaws firmly against the mouthpiece stem so the puller pushes against the receiver correctly. Laying the instrument on a padded bench or table can help.
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The G88 is shown in use on a Conn 14D French horn and a cornet. Maintain a firm, controlled grip throughout the removal process.