W&H Perfecta 900 Instructions For Use Manual page 32

13. Change the rotary tool
LA-9
LA-66 (optional)
32

Turn the expansion ring
clockwise up to the limit
stop . Push in the rotary
tool up to the limit stop or
remove .

Turn the front sheath
clockwise up to the limit
stop . Push in the rotary
tool up to the limit stop or
remove .

Turn the expansion ring anti-
clockwise until it engages
audibly .

Turn the front sheath anti-
clockwise until it engages
audibly .