Husqvarna 323Ex Series Operator's Manual page 12

5 Fit the locking nut (D). CAUTION! The locking nut has
a left-hand thread. Tighten the locking nut to a torque
of 35-50 Nm.
6 Remove the locking pin.
CAUTION! Do not forget to remove the locking pin before
using the machine.
12 – English
ASSEMBLY
1153252-95 Rev.1 2010-02-02