AAVIX AGT1321S Owner's Manual page 17

NOTE:
For handle height adjustment there are three holes in the support.
Secure the lower handle to the middle hole on both sides.
Secure the lower handle (6) with the mounting sets (8) to the support
6.
(19) (Fig. 3).
Fix wires (3) with the wire clips (7a) to the lower handle (6) (Fig. 4).
7.
Nylon Grass Catcher
NOTE:
Before hooking the catcher onto position, check if the
mulching insert (29) for mulching use is in the outlet. Take out the
insert from the outlet before you attach the grass catcher.
PAGE 17