Take-Up Lever Function,Installation - Jack A4 Manual

Mechanical adjustment-
function：From top to bottom: Pay-off for the hook to hook thread、when the
hook turn to 180 degrees，the take-up lever take back the extra thread，
form stitch。
installation：take-up plane aim to the first screws 。
take-up lever function、installation
The first
screws
take-up
plane