Removing The Shuttle Hook - ELNA Supermatic Service Manual

22. Removing the Shuttle Hook

Removing the Shuttle
If shuttle hook must be removed for some reason, proceed as follows:
Remove needle, presser foot, needle plate and feed dog. Open shuttle cover and remove the bobbin.
Loosen the Oil Hole Screw on bottom of shuttle assembly.
Caution! Do not loosen the three screws at the bottom of the
shuttle hook.
On machines with the Automatic Thread Release device, the
Guard Ring Stop must also be removed.
Caution! The Guard Ring Stop will have to be readjusted once
removed.
Lift out shuttle assembly.
Replacing the Shuttle
Turn the flywheel towards you until the needle is in its lowest position.
Note! It is assumed that, before removing the Shuttle Assembly, the timing of the shuttle hook in relation to the
needle bar was correct. If that is not the case, the timing will need to be adjusted at this time.
Insert the Shuttle Assembly so that the point of the shuttle hook is about 2.4 mm [3/32"] before the needle.
On machines (Serial No 527,625 or earlier) the shuttle beak must be lodged between the Shuttle Stop and the
Stop Spring.
On machines (Serial No 527,626 to 1,104,935), the shuttle beak must be lodged inside of the recess of the
Automatic Thread Release.
On machines (Serial No 1,104,936 or later), the shuttle beak must be lodged in the notch of the Guard Ring
Stop.
Adjustment can be made by lifting the Shuttle Assembly out again and advancing or retarding the shuttle hook
by one gear tooth at a time.
Replace The Oil Hole Screw, feed dog, guard ring stop, needle plate, presser foot and needle. Close the shuttle
cover to its working position.
39