Ducati MONSTER 821 Workshop Manual page 568

Remove the bottom yoke (7) complete with the steering shaft from the frame tube.
Remove the ball race (B) of the lower bearing (6).
The inner ring (A) of the lower bearing (6) and the sealing ring (5) will remain on the steering shaft.
Using a universal puller (see figure), remove the inner ring (A) from the steering shaft, taking care not to
damage the seat.
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