10 
vacuum/shredding application
Remove Blower Pipes
1.Release locking ring (C) with a coin or screwdriver, and rotate ring so that lock symbol (A) is at top of ring.
2.Remove pipes from locking ring.
Install Vacuum Tube
1.Turn knob (I) counter clockwise until hinged housing cover is free to open for vacuum tube installation.
2.Opening housing cover, slide recess (J) on vacuum tube into locking rib (K), and turn the vacuum tube clockwise so that it is locked.
NOTE
Engine will not start/operate unless safety interlock switch (K) is activated by the vacuum tube.