Toro Workman HDX Service Manual page 111

9. Inspect center plate for cracks and damage. Replace
center plate if the snap ring groove has more than 15%
of its edges damaged due to nicks, rounding, cracks or
dents (Figs. 60 and 61).
Workman HD Series
UNDAMAGED
GROOVE
DAMAGED
GROOVE EDGES
Page 6 - - 35
Figure 60
Figure 61
Drive Train