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Click on picture to view video.

1. To remove nosepiece housing, push up, turn counter-clockwise 1/4 turn and pull
2. Remove rubber insert
3. Remove filter and TC gasket
4. Remove TC gasket from filter and discard filter

1. Press new filter into place
2. Push TC gasket on to filter end.
3. Push rubber insert onto filter end
4. Reconnect nosepiece housing by pressing and turning with a clockwise motion until locked