Maintenance; Replacing O-Rings - W&H Assistina Twin MB-302 Instructions For Use Manual

10. Maintenance

Replace damaged or leaking O-rings immediately.
Do not use sharp tools!
38
 Firmly squeeze the O-ring between your thumb
and index finger so that it forms a loop.
 Pull off the O-ring.
e Slide on a new O-ring.

Replacing O-rings