Specifications
HT-2000 Installation and Operation Manual     
49 
Appendix 4: Installation of Secondary Air Tubes 
1-Starting with the rear tube, lean and 
insert the right end of the secondary air 
tube into the rear right channel hole.  
Then lift and insert the left end of the tube 
into the rear left channel. 
2- Align the last hole of the tube in the left 
air channel spigot hole. Insert a cotter pin 
in order to maintain the tube in place.  
3-  Fold-up the cotter pin end to lock the 
tube. 
4- Repeat step 1, 2 & 3 for the other 
secondary air tubes. 
5- To remove the tubes use the above 
steps in reverse order. 










