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Columbia Installation and Operation ManualAppendix 3: Installation of Secondary Air Tubes and Baffle1- Starting with <strong>the</strong> rear tube, lean andinsert <strong>the</strong> right end of <strong>the</strong> secondary airtube into <strong>the</strong> rear right channel hole.Then lift and insert <strong>the</strong> left end of <strong>the</strong>tube into <strong>the</strong> rear left channel.2- Align <strong>the</strong> notch in <strong>the</strong> left end of <strong>the</strong> tubewith <strong>the</strong> key of <strong>the</strong> left air channel hole.Secure <strong>the</strong> tube by pushing <strong>the</strong> cotterpin through <strong>the</strong> last hole on <strong>the</strong> right endof <strong>the</strong> tube. Spread out <strong>the</strong> cotter pinlegs with a pair of long nose pliers (seedetail A.) Make sure <strong>the</strong> notch reaches<strong>the</strong> end of <strong>the</strong> key way.3- Repeat step 1 and 2 for <strong>the</strong> o<strong>the</strong>rsecondary air tubes.4- To remove <strong>the</strong> tubes use <strong>the</strong> abovesteps in reverse order.47